a 3.63.6 - kgkg chihuahua charges at a speed of 3.3m/s3.3m/s . what is the magnitude of the average force needed to bring the chihuahua to a stop in 0.50s0.50s ?
Answers
The average force needed to bring the chihuahua to a stop is 10.08 N
What is force?Forces are influences that can change the movement of an object. A force applied can change the velocity of an object with mass, i.e. accelerate it. Forces may also be described intuitively by pushing or pulling. A force has both magnitude as well as direction, thus is a vector quantity. This is summarized by the formula:
Force(N) = Mass(kg) x Acceleration(m/s²).
An object with constant mass accelerates in proportion to the applied force.
To determine force, first we need to calculate acceleration:
a = (v-u)/t
v = 3.3 m/s
u = 0
t = 0.50 s
a = (3.3 - 0)/0.50
a = 2.8 m/s²
Now, the force required to halt the dog is:
F = m × a
m = 3.6 kg
F = 3.6 × 2.8
F = 10.08 N
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Related Questions
A 100kg crate slides along a floor with a starting velocity of 21ms If the force due to friction is 8N how long will it take for the box to come to rest? Show your work!
Answers
A 100kg crate slides along a floor with a starting velocity of 21 m/s. If the force due to friction is 8N, then, it will take 262.5 s for the box to come to rest.
We'll begin by calculating the declaration of the box. This can be obtained as follow:
Force (F) = –8 N (opposition)
Mass (m) = 100 Kg
Deceleration (a) =? F = ma–8 = 100 × a
Divide both side by 1000
\(a = \frac{-8}{100}\)
a = –0.08 ms¯²Therefore, the deceleration of the box is –0.08 ms¯²
Finally, we shall determine the time taken for the box to come to rest. This can be obtained as follow:
Deceleration (a) = –0.08 ms¯²
Initial velocity (u) = 21 ms¯¹
Final velocity (v) = 0 ms¯¹
Time (t) =.? v = u + at0 = 21 + (–0.08×t)
0 = 21 – 0.08t
Collect like terms
0 – 21 = –0.08t
–21 = –0.08t
Divide both side by –0.08
\(t = \frac{-21}{-0.08}\\\\\)
t = 262.5 sTherefore, it will take 262.5 s for the box to come to rest.
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In 2 - 3 sentences, explain the difference in Kinetic energy and Potential energy.
Answers
The main difference between Kinetic energy and Potential energy is that kinetic energy refers to movement while potential energy refers to storage.
What are Kinetic energy and Potential energy?Kinetic energy is a type of energy in motion or energy in movement such as a turbine (mechanical energy), while Potential energy refers to the energy that is stored to be used when required (e.g. chemical bonds of foods).
Therefore, with this data, we can see that Kinetic energy is used as movement, while Potential energy is stored to be used in the future.
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How long will it take a car to cover 870 miles if the car travels 35 mi/hr?
Answers
Answer:
To find out how long it will take a car to cover 870 miles at a speed of 35 miles per hour, we can use the formula:
time = distance ÷ speed
Plugging in the given values, we get:
time = 870 miles ÷ 35 miles per hour
Simplifying the right side by dividing 870 by 35, we get:
time = 24.86 hours
Rounding to the nearest hour, the answer is:
time = 25 hours
Therefore, it will take the car approximately 25 hours to cover a distance of 870 miles at a speed of 35 miles per hour.
Which statements describe the motion of car A and car B? Check all that apply. Car A and car B are both moving toward the origin. Car A and car B are moving in opposite directions. Car A is moving faster than car B. Car A and car B started at the same location. Car A started ahead of car B.
Answers
Answer:
✔️Car A and Car B are moving in opposite directions.
✔️Car A is moving faster than Car B.
✔️Car A started ahead of car B.
Explanation:
The position-time graph shows Car A and Car B. The graph reveals that both cars are moving in opposite directions.
Car A shows a positive slope and Car B shows a negative slope.
The graph also shows that Car A started ahead of Car B. It's seen from the graph that Car A started from the origin.
Therefore, we conclude that the correct statements are:
✔️Car A and Car B are moving in opposite directions.
✔️Car A is moving faster than Car B.
✔️Car A started ahead of car B.
Answer:
merry cristmas the other person answered right I checked for you
Explanation:
happy NEW YEARS FINALLY NO MORE 2020
name 2 physical properties that affect the storage capacity of a capacitor
Answers
Answer:
The amount of charge Q a capacitor can store depends on two major factors—the voltage applied and the capacitor's physical characteristics, such as its size. The capacitance C is the amount of charge stored per volt, or C=QV C = Q V .
Explanation:
How does the current in a resistor change if the voltage across the resistor is
decreased by a factor of 4?
A. It decreases by a factor of 4.
B. It decreases by a factor of 2.
C. It increases by a factor of 4.
D. It increases by a factor of 2.
Answers
The current in a resistor change if the voltage across the resistor is
decreased by a factor of 4.
What is meant by resistor ?
A resistor is an electrical component that controls or restricts how much electrical current can pass across a circuit in an electronic device.A specified voltage can be supplied via resistors to an active device like a transistor.Modern resistors are often constructed from a carbon, metal, or metal-oxide layer.In these resistors, an insulating material is wrapped in a helix around a thin film of conductive (but still resistant) material.A passive electrical component called a resistor prevents the flow of electric current by introducing resistance.They are present in practically all electrical networks and electronic circuits. Ohms are used to measure resistance.Voltage, V = IR where I = current and R = resistance.
So,V₁ = I₁R. So, I₁ = V₁/R. Now the new current is I₂ = V₂/R
If V₂ = V₁/4, then I₂ = V₂/R = (V₁/4)/R = V₁/4R = I₁/4
I₂ = I₁/4
The current is reduced by 1/4
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If the average distance of a planet from the Sun is 21 A.U, what is the time in years for ONE cycle?
Enter your answer with one decimal place for example: 34.7
Answers
Therefore, we cannot calculate the exact time for one cycle without more information.
The time for one cycle of a planet around the Sun is determined by its orbital period, which is related to the average distance of the planet from the Sun. In this case, if the average distance of the planet from the Sun is 21 astronomical units (A.U.), we can use Kepler's Third Law to calculate the orbital period.
Kepler's Third Law states that the square of the orbital period (T) is proportional to the cube of the average distance (r) between the planet and the Sun. Mathematically, it can be expressed as:
T^2 = k * r^3
Where k is a constant.
Given that the average distance is 21 A.U., we can set up the following equation:
T^2 = k * 21^3
To solve for T, we need the value of the constant k. However, without further information or additional equations, we cannot determine the specific value of k. Therefore, we cannot calculate the exact time for one cycle without more information.
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A simple 15.2 cm reflecting telescope can achieve 1 second of arc resolution for visible light. Many radio telescopes study a particular radio wavelength of 21 cm. Complete parts a −d using the above information. a. Use the Raleigh criteron to determine how large a radio telescope aperature must be to achieve this resolution at 21 cm. b. Why must the aperture of a radio telescope be much larger than that of an optical telescope? c. Why is it possible to resolve two predominantly blue stars when the same telescope can not resolve two simarily separated red stars? d. In the galaxy pictures of 5 b, which photograph corresponds to the largest aperture?
Answers
a)The aperture size of the radio telescope needs to be approximately 0.27 meters b)The aperture of a radio telescope needs to be much larger than that of an optical telescope because radio waves have much longer wavelengths compared to visible light. c)the resolving power of a telescope depends on the ratio of the wavelength of light.
a. To determine the aperture size of a radio telescope to achieve a resolution at 21 cm, we can use the Rayleigh criterion, which states that the minimum resolvable separation (δθ) is given by:
δθ = 1.22 * (λ / D)
Where λ is the wavelength of the radiation and D is the diameter of the telescope's aperture.
Given that the radio wavelength is 21 cm (or 0.21 m), and we want to achieve the same resolution as the optical telescope (1 second of arc), we can rearrange the formula to solve for D:
D = 1.22 * (λ / δθ)
D = 1.22 * (0.21 m / 1 second of arc)
Calculating the result:
D ≈ 0.27 m
Therefore, the aperture size of the radio telescope needs to be approximately 0.27 meters to achieve a resolution of 1 second of arc at a wavelength of 21 cm.
b. The Rayleigh criterion tells us that the resolution of an instrument is inversely proportional to the wavelength.
Since radio waves have longer wavelengths, the telescope's aperture needs to be larger to achieve the same resolution as an optical telescope. This is because a larger aperture collects more incoming waves and allows for finer spatial detail to be resolved.
c. The ability to resolve two objects using a telescope depends on the size of the aperture relative to the wavelength of the radiation. When it comes to resolving stars, the resolving power of a telescope depends on the ratio of the wavelength of light to the size of the telescope's aperture (λ/D).
Blue light has a shorter wavelength compared to red light. Since the resolving power is directly proportional to the wavelength, a shorter wavelength of blue light allows for better resolution.
Therefore, two predominantly blue stars can be resolved because their shorter wavelength allows for finer detail to be distinguished, while the same separation between two predominantly red stars cannot be resolved due to the longer wavelength.
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8. 16 Two children hold opposite ends of a lightweight, 1. 8 m-long horizontal pole with a water bucket hanging from it. The older child supports twice as much weight as the younger child. How far is the bucket from the older child? A. 3 mB. 6 C. 9 mD 1. 2 m
Answers
The bucket is located 6 meters away from the older child. let's denote the weight supported by the younger child as "x." According to the problem, the older child supports twice as much weight, so the weight supported by the older child is "2x."
When the pole is in equilibrium, the sum of the torques (moments) acting on it must be zero. Torque is calculated by multiplying the force applied by the distance from the pivot point.
In this case, the torques acting on the pole are:
Torque from the weight of the bucket = (2x) * d,
Torque from the weight supported by the younger child = x * (1.8 - d),
where "d" represents the distance from the older child to the bucket.
Since the pole is in equilibrium, the torques must cancel each other out:
\((2x) * d = x * (1.8 - d).\)
Simplifying the equation:
\(2xd = 1.8x - xd,3xd = 1.8x,3d = 1.8,d = 1.8 / 3 = 0.6.\)
Therefore, the bucket is located 0.6 meters away from the older child.
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Consider the system shown in the figure. The rope and pulley have negligible mass, and the pulley is frictionless. The coefficient of kinetic friction between the 8.00-kg block and the tabletop is m_k=.25 . The blocks are released from rest.Use energy methods to calculate the speed of the 6.00-kg block after it has descended 1.50 m. How do i calculate work on the 8kg block.
Answers
Plugging in the given values and solving for the final velocity of the 6kg block will give you the speed of the 6.00-kg block after it has descended 1.50 m. In this case, the normal force is the weight of the 8kg block, and the displacement is the distance that the 8kg block moves.
Energy Method Block SpeedTo calculate the speed of the 6.00-kg block after it has descended 1.50 m, you can use the conservation of mechanical energy. The initial mechanical energy of the system is the potential energy of the 6.00-kg block (mgh) and the potential energy of the 8.00-kg block (mgh). As the blocks move, some of this energy is converted into kinetic energy, and some is lost to friction. The equation for the conservation of mechanical energy is:
E_initial = E_final + W_friction
Where E_initial is the initial mechanical energy of the system, E_final is the final mechanical energy of the system, and W_friction is the work done by friction.
The final mechanical energy of the system is the kinetic energy of the 6.00-kg block (1/2 mv²) and the potential energy of the 8.00-kg block (mgh).
To calculate the work done by friction, you can use the equation:
W_friction = force x distance x cos(theta)
Where force is the force of friction, distance is the distance over which the force of friction acts, and theta is the angle between the force of friction and the displacement. The force of friction is the coefficient of kinetic friction times the normal force.
In this case, the normal force is the weight of the 8kg block, and the displacement is the distance that the 8kg block moves.
W_friction = m_kF_nd
Where m_k = 0.25 is the coefficient of kinetic friction, F_n = 8*9.8 N is the normal force, and d = 1.5m is the distance that the 8kg block moves.
Plugging in the given values and solving for the final velocity of the 6kg block will give you the speed of the 6.00-kg block after it has descended 1.50 m.
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An object is dropped from a 32 m tall building. How fast will it be going when it strikes
the ground?
Answers
Answer: 25.04m/s
Explanation:
v^2 = v^2o + 2a(x-xo)
v^2 = velocity
v^2o = initial velocity
a = acceleration
x = final position/distance
xo = initial position/distance
In this case, the initial velocity is 0 since the ball wasn't moving before it was dropped. The final position is 32 as the motion ended after the ball traveled 32m. The initial position is 0. The acceleration is 9.8m/s (free fall). Plug these numbers into the formula:
v^2 = 0 + 2(9.8)(32)
v^2 = 25.04396135
Round to get 25.04m/s
What is the sum of four vectors that form a closed tetrogona
Answers
The sum of four vectors that form a closed tetrahedron is equal to the zero vector.
Why is it a zero vector?The above is zero vector because the four vectors in a closed tetrahedron are arranged in such a way that their sum is the vector from the starting point to the starting point, which is a vector of length zero. In other words, the four vectors cancel each other out, resulting in a net displacement of zero.
In a closed tetrahedron, the four vectors are arranged in such a way that they define a three-dimensional shape with four triangular faces. The vectors are typically labeled A, B, C, and D.
Therefore, If we imagine starting at a point and traveling along vector A, then vector B, then vector C, and finally vector D, we will end up back at our starting point. This means that the sum of vectors A, B, C, and D is the vector from the starting point to the starting point, which is a vector of length zero.
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How does the law of conservation of mass apply to this reaction: Mg + HCI + H2 MgClz?
O The equation needs to be balanced. There are fewer hydrogen atoms in the equation than magnesium or chlorine.
© Only the hydrogen needs to be balanced. There are equal numbers of magnesium and chiorine.
Hydrogen and chlorine need to be balanced. There is an equal amount of magnesium on each side
©
The
law of conservation of nÖss has already been
the equation.
applied. There is an equal number of each element on both sides of
Answers
You can’t just look at the individual elements. To balance the equation, Magnesium will be part of the balancing and hence you will be adding Magnesium to both sides of the equation etc
what is the maximum vertical height the box will reach if its initial velocity at the bottom of the ramp is 4.0 m/s?
Answers
Using the concepts of motion, we got that 0.816m is the maximum vertical height the box will reach if its initial velocity at the bottom of the ramp is 4.0 m/s.
We use Newton`s third equation of motion,
v² -u²=2aS---------(eq1)
where
v is the final velocity, and u is the initial velocity and a is the acceleration of the object and S is the displacement of the object.
We know, that at the maximum height, final velocity will be =0
Acceleration will be acceleration due to gravity(g)=9.8m/sec² .
Putting the values in (eq1)
=>0-(4)² = 2×(-9.8)×S
=>2×9.8×S = 16
=>S = [(16)/(2×9.8)]
=>S = 8/9.8
=>S =0.816m
Hence, the the maximum vertical height the box will reach if its initial velocity at the bottom of the ramp is 4.0 m/s is 0.816m
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1.) A projectile is launched at 32.1 m/s and 52.6 º above the horizontal. Determine the:
a.) Maximum height of the projectile.
b.) The time it takes to reach the maximum height
c.) Time of flight
d.) Range
Answers
Answer:
a.) Maximum height of the projectile. =32.5m
b.) The time it takes to reach the maximum height=2.6s
c.) Time of flight=2.6s
d.) Range=99.5m
Explanation:
The main functions of the urinary system are Multiple Choice Regulation of water balance and blood glucose level Regulation of water and electrolyte balance, only Removal of waste and storage of nutrients Removal of waste and regulation of water and electrolyte balance
Answers
The main functions of the urinary system. "Removal of waste and regulation of water and electrolyte balance."
The main functions of the urinary system are the regulation of water and electrolyte balance, as well as the removal of waste. The system is responsible for filtering and removing waste products from the blood, while also maintaining a proper balance of fluids and electrolytes within the body.
This ensures that the body remains healthy and functioning properly. Additionally, the urinary system plays a role in regulating blood pressure, and helps to produce certain hormones that are important for overall health. So, the answer to your question is "Removal of waste and regulation of water and electrolyte balance."
The urinary system plays a vital role in maintaining overall health by removing waste products and regulating water and electrolyte balance in the body. It does this through the process of filtration, reabsorption, and secretion in the kidneys, as well as the storage and elimination of urine through the bladder and urethra.
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Find the height of a cylinder with a volume of 220inand a radius of 3 inches. Round
your answer to the nearest hundredth.
07.78 inches
6.93 inches
5.00 inches
9.84 inches
Answers
\(\huge{ \mathcal{ \underline{ Answer} \: \: ✓ }}\)
Given :
volume = 220 in³radius = 3 inSolution :
\( \large\boxed{ \mathrm{volume = \pi {r}^{2}h }}\)
\(220 = \dfrac{22}{7} \times 3 \times 3 \times h\)\( \dfrac{220 \times 7}{22 \times 3 \times 3} = h\)\( \dfrac{10 \times 7}{3 \times 3} = h\)\(h = \dfrac{70}{9} \)\( \boxed{h \: = 7.78 \: \: in}\)_____________________________
\(\mathrm{ \#TeeNForeveR}\)
Answer:
0.078 inches
Explanation:
The volume of a cylinder is \(V=\pi r^{2} h\). \(r\) is the radius of the cylinder, \(h\) is the height of the cylinder, and \(V\) is the total volume.We can divide both sides by \(9\pi\) to isolate the height. We now have \(\frac{220}{9\pi }=h\).We can plug in \(220\) for the value of \(V\), and insert 3 as \(r\). Now, we have \(220 = \pi (3^2)(h)\).We can simplify the right side by finding the value of \(3^2\), which is \(3*3\), or \(9\). We now have \(220 = 9\pi h\).Divide both sides by \(9\pi\) so we can isolate the height! We now have \(\frac{220}{9\pi }=h\).It would be best to use a calculator at this point. Plug the above equation into a calculator; otherwise, replace \(\pi\) with \(3.14\) and simplify the fraction. You should get about \(07.7809...\) which we can round to the nearest hundredths (since this is Geometry, I am assuming you know how to round).Our final answer is \(07.78\) inches.Hopefully this was of use!
What factors affect an objects kinetic energy?
Answers
Answer:
friction
air drag
every thing that opposes the motion affects kinetic energy
Explanation:
kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest
potential energy ∝ 1/(kinetic energy)
as kinetic energy increases potential energy decreases
which kind of energy transformation occurs in a gasoline-powered car?
F. Chemical energy is converted into mechanical energy.
G. Mechanical energy is converted into light energy.
H. Light energy is converted into sound energy.
J. sound energy is converted into chemical energy.
Answers
A 500cm3 pyrex beaker is 95% full of methanol at 5 degree celcius at what temperature will it be 100% full with methanol
Answers
Answer:
40.3 °C
Explanation:
The volumetric coefficient of expansion of methanol is reportedly about 0.00149/K at 20 °C. Ordinarily, these coefficients vary with temperature, but we'll assume it is constant and that the expansion is linear with temperature.
Then we want to find the change in temperature ΔT such that ...
95%(1 +0.00149·ΔT) = 100%
0.0014155·ΔT = 0.05 . . . . simplify, subtract 95%
ΔT = 0.05/0.0014155 ≈ 35.3
Adding this temperature change to the original 5 °C tells us the beaker will be full with methanol if heated to ...
5 °C +35.3 °C = 40.3 °C
_____
The beaker itself expands when heated. Its linear coefficient of expansion is about 3.3×10^-6/K, so its volume expansion over the temperature range of interest is on the order of 1 part in 3000. This is far smaller than any of the other errors associated with this calculation or with determination of "100% full". We choose to ignore it.
Hello:)! how to do 1(c)?
Answers
Answer:
It does not come to a complete stop immediately because of inertia.
Explanation:
Inertia is the reluctance of an object to change its state of motion or rest. In this case, it is the state of motion since the ship was moving initially. Inertia is directly related to mass. Thus, the heavier the mass, the larger the inertia. The ship has a large mass and therefore it has a large inertia. This causes the ship to slowly come to a stop instead of stopping immediately when the engines are switched off.
A particle is moving along a straight line with an initial velocity of 8 m/s when it is subjected to a deceleration of a = (-1.6 v1/2) m/s2, where v is inm/s.
Determine how far it travels before it stops.
How much time does this take?
Answers
The acceleration of a particle is a= (-1.6 v1/2) m/s². The initial velocity of the particle is u = 8 m/s.
Now, let's use the formula: 2as = v² - u², where a = (-1.6v^(1/2)) m/s², u = 8 m/s, and v = 0 m/s 2 × (-1.6v^(1/2)) × s = 0 - 8²s = 64 / (2 × 1.6v^(1/2)) = 20v^(1/2)/4 = 5v^(1/2) meters.
This is the distance travelled by the particle before it stops.
We know that the final velocity of the particle is 0 m/s. The initial velocity of the particle is 8 m/s.
The acceleration of the particle is a = (-1.6v^(1/2)) m/s².
Let's use the formula to calculate the time it takes to stop the particle. It is:v = u + at 0 = 8 + (-1.6v^(1/2)) × t t = 8 / (1.6v^(1/2)) t = 5 / v^(1/2) seconds.
This is the time taken by the particle to come to rest.
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The particle travels approximately 12.5 meters before it comes to a stop. It takes approximately 5 seconds for the particle to reach zero velocity.
To determine the distance traveled before the particle comes to a stop, we need to integrate the velocity function over time. The given deceleration is expressed as a = -1.6√v , where v is the velocity in m/s. Since the initial velocity is 8 m/s, we can write the deceleration as a = -1.6√8. Integrating the acceleration with respect to velocity gives us the equation: ∫dv/(-1.6√v ) = ∫dt. Simplifying the integral and solving for t gives us t = 5 seconds.
To find the distance traveled, we integrate the velocity function with respect to time. The velocity function is given by dv/dt = -1.6√v. Separating variables and integrating, we get ∫dv/√v = ∫-1.6dt. Evaluating the integral and substituting the limits (from v = 8 m/s to v = 0), we find √v = -1.6t + C. Applying the initial condition v(0) = 8, we can solve for C and obtain C = √8. Plugging in the values for t and C, we get √v = -1.6t + √8. Squaring both sides and solving for v, we find v = \((1.6t - \sqrt{8} )^{2}\). Integrating the velocity function again with respect to time, we get ∫\((1.6t - \sqrt{8} )^{2}\) dt = ∫ds. Evaluating the integral and substituting the limits, we find s = 12.5 meters.
Therefore, the particle travels approximately 12.5 meters before coming to a stop.
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2. conductivity in an electrical circuit is analogous to in a magneticcircuita) retentivity c) resistivityb) permeability d) inductance
Answers
Conductivity in an electrical circuit is analogous to in a magnetic circuit resistivity. The correct option is (c).
Conductivity in an electrical circuit refers to the ability of a material to conduct electric current. Similarly, in a magnetic circuit, resistivity is analogous to conductivity.
Resistivity is a measure of how well a material opposes the flow of magnetic flux. It is denoted by the symbol ρ and is the reciprocal of permeability (μ) which relates to how easily a material can establish a magnetic field in response to an applied magnetic field.
Permeability (b) is a property that characterizes how easily a material can be magnetized in the presence of a magnetic field. It is the analog of permittivity in electrical circuits.
Retentivity (a) refers to the ability of a magnetic material to retain its magnetization after the removal of an external magnetic field.
Inductance (d) is a property of an electrical circuit related to the ability to store energy in a magnetic field when current flows through a conductor.
Therefore, the correct answer is (c) resistivity, as it represents the opposition to the flow of magnetic flux in a magnetic circuit, analogous to conductivity in an electrical circuit.
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What does the Law of Conservation of Mass say about a chemical reaction? (1 point)
O Mass increases as atoms are rearranged during a chemical reaction.
O To balance a chemical equation, additional mass may be created.
O Mass is not measurable in a chemical reaction.
© In a chemical reaction, mass is neither created nor destroyed.
Answers
The Law of Conservation of Mass states in a chemical reaction, mass is neither created nor destroyed and is therefore denoted as option D.
What is a Chemical reaction?This is defined as the process in which substances referred to as reactant combine together form new ones which is referred to as product which is usually based on various types of factors.
Antoine Lavoisier discovered that mass is neither created nor destroyed in a chemical reaction which is therefore the reason why the same number of atoms of elements on the left hand side is always equal to that on the right hand side.
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a 2150 kg car traveling to the west at 19.3 m/s slows down uniformly under a force of 8520 n to the east. a) how much force would be required to cause the same acceleration on a car of mass 3050 kg?
Answers
23546 N force would be required to cause the same acceleration on a car of mass 3050 kg.
What is force ?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to define force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.The term "force" has a clear definition. At this level, calling a force a push or a pull is quite appropriate. A force is not something an item "has in it" or that it "contains." One thing experiences a force from another. There are both living things and non-living objects in the concept of a force.Given data :
m = 2150 kg
Vi = 19.3 m/s
F = - 8520N
Δt = 2.5 s
Vf = ?
F = Δp / Δt
= Δp = FΔt
= mVf - m Vi = FΔt
= ( 2150 kg) Vf - ( 2150 kg) x (19.3 ) = ( - 8520) x ( 2.5)
=( 2150 kg) Vf - 41495 = -21300
= ( 2150 kg) Vf = 20195 kg m/s
Vf = 20195 / 2150 = 9.39 m / s
a) how much force would be required to cause the same acceleration on a car of mass 3050 kg?
Given data :
m = 3050 kg
F = ?
Vi = - 19.3
Vf = 0 m / s
Δt =2.5 s
F = Δp / Δt
F = mVf - m Vi / Δt
= ( 3050 x 0) - ( 3050 x -19.3) / 2.5
= 23546 N
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a variety of time and temperature combinations can be applied to milk (including banana flavor!) to make it safe to drink. collectively, all of these heat-based approaches are referred to as
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A variety of time and temperature combinations can be applied to milk (including banana flavor!) to make it safe to drink. Collectively, all of these heat-based approaches are referred to as pasteurization. Pasteurization is a process that involves heating food to a specific temperature for a specific period of time to destroy potentially harmful pathogens while preserving its flavor and nutritional value.
The method was first used by French chemist and microbiologist Louis Pasteur in the 19th century to keep wine and beer from spoiling.
There are several methods of pasteurization, but the most common involves heating milk to 145°F (63°C) for at least 30 minutes, followed by rapidly cooling it to 39°F (4°C) or lower.
Another method, called high-temperature, short-time (HTST) pasteurization, heats the milk to 161°F (72°C) for 15 seconds, followed by rapid cooling to 39°F (4°C) or lower.
Other heat-based approaches include ultra-pasteurization, which involves heating milk to 280°F (138°C) for two seconds, and flash pasteurization, which heats the milk to 161°F (72°C) for 15 seconds before cooling it quickly.
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at what speed do a bicycle and its rider, with a combined mass of 100 kg , have the same momentum as a 1800 kg car traveling at 4.8 m/s ?
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Answer:
Explanation:
Given:
m₁ = 100 kg
m₂ = 1800 kg
V₂ = 4.8 m/s
____________
V₁ - ?
According to the condition of the problem, the momentum are equal:
m₁·V₁ = m₂·V₂
Speed:
V₁ = m₂·V₂ / m₁ = 1800·4.8 / 100 ≈ 86 m/s
Three forces act on an object in vertical plane two forces of 500N and 300N act vertically upwards and the third force of 600N acts vertically downwards determine the resultant force acting on the object
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The resultant force acting on the object is 200 N upwards.
What is the resultant force acting on the object?
The resultant force acting on the object is calculated by taking sum of all the forces including their direction.
Mathematically, the formula for the resultant force acting on the object is given as;
F ( net ) = F1 + F2 + F3
where;
F1 is the first force acting vertically upwardF2 is the second force acting vertically upwardF3 is the third force acting vertically downwardThe magnitude of the first force acting vertically upward = 500 N
The magnitude of the second force acting vertically upward = 300 N
The magnitude of the third force acting vertically downwards = 600 N
The resultant force acting on the object is calculated as follows;
F (net) = 500 N + 300 N - 600 N
F (net) = 200 N
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For voltage-gated channels, a change in the membrane potential has what effect on the channel?
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The change in membrane potential influences the state of voltage-gated channels, regulating their opening or closing and thereby controlling the flow of ions across the cell membrane. This modulation of ion flow plays a critical role in various physiological processes, including neuronal signaling, muscle contraction, and many other cellular functions.
For voltage-gated channels, a change in the membrane potential has the effect of altering the channel's conformation and modulating its activity. These channels are sensitive to changes in the electrical potential across the cell membrane, and they open or close in response to specific voltage thresholds.
When the membrane potential reaches a certain threshold, voltage-gated channels undergo a conformational change that leads to their activation. This conformational change allows ions to flow through the channel, resulting in the generation and propagation of electrical signals in excitable cells such as neurons and muscle cells.
The specific effect of a change in membrane potential on a voltage-gated channel depends on the type of channel and its specific characteristics. Some channels open in response to depolarization (increase in membrane potential), allowing positive ions to enter the cell or negative ions to exit. Others open in response to hyperpolarization (decrease in membrane potential), permitting positive ions to exit or negative ions to enter.
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A series of waves with decreasing wavelength labeled radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays from left to right as wavelength decreases. At visible light is at a place with colored bands crossing the waves with dotted lines down to a colored spectrum from red to blue labeled in nanometers from 700 to 400. Above the waves are a label Frequency with an arrow pointing left labeled decreased and an arrow pointing right labeled increasing. Topmost is a label Wavelength (meters) with an arrow pointing left labeled longer and an arrow pointing right labeled shorter. Use the image to rank the colors from the color that will refract the least to the color that will refract the most. Least Most
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Answer:
Label A: red
Label B: yellow
Label C: green
Label D: blue
Label E: violet/purple
I think this should be correct. I'm sorry if I'm incorrect
Based on the degree of refraction from least to most refracted, the colors are as follows: Red, Orange, Yellow, Green, Blue, Indigo, Violet.
What is refraction of light?Refraction of light is the bending of light rays as they cross the boundary between two media of different densities.
White light consists of seven colors of light; Red, Orange, Yellow, Green, Blue, Indigo, Violet.
The red color has the shortest wavelength and is the least refracted while violet color has the longest wavelength and is most refracted.
Therefore, based on the degree of refraction from least to most refracted, the colors are as follows: Red, Orange, Yellow, Green, Blue, Indigo, Violet.
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