The main source of energy for hurricanes to grow and develop is sea-surface temperatures. Warm sea-surface temperatures provide the necessary heat and moisture for hurricanes to form and intensify.
The main source of energy for hurricanes to grow and develop is a combination of lots of moisture from the ocean and high sea-surface temperatures. The warm ocean water provides the fuel for the storm while the moisture provides the necessary water vapor to fuel the storm.
The Coriolis Effect, which causes the rotation of the Earth, also plays a role in the development of hurricanes by creating the low-pressure zone that is necessary for the storm to form. Strong winds from the Jet Stream can also impact the formation and path of hurricanes, but they are not the main source of energy for the storm.
While the Coriolis Effect, lots of moisture from the ocean, and strong winds from the Jet Stream play roles in hurricane development, it is the warm sea-surface temperatures that primarily fuel their growth.
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Damron Inc. Wants to purchase a shear for their sheet metal shop and chooses dimensions of cost, reliability, and flexibility as critical to their long term success. They evaluate three different shears and rate their performance on each criterion on a scale from 1 (poor) to 5 (excellent). What is the value index for the shear made by Belsky Manufacturing? Dimension Importance Belsky Mfg. Reber Ind. Floyd Co. Cost 4 1 5 3 Reliability 2 5 2 1 Flexibility 3 3 3 4 A. 23 B. 81 C. 18 D. 9
Rate the effectiveness of four different shears on a scale of 1 to 10 for each category. Reber thinks that the shear should be bought.
Describe flexibility.Flexibility is the term used to describe a joint's or a collection of joints and muscles' ability to move through a range of motion efficiently painlessly.
Flexibility is the capacity to swiftly and collectedly adapt to brief change, enabling you to successfully handle unforeseen issues or duties. Here are some instances of what you could do: Offer to help another team member if you see them to be overworked.
Flexibility in the workplace refers to the capacity to quickly adjust to novel situations as they emerge. A flexible worker can alter their plans to deal with or get around unexpected challenges.
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examples of different types of energy that are PE
\(\quad \quad\quad \huge \underline{\tt{ANSWER᭄}}\)
\( \quad\quad\quad\quad\)
\( \blue{ \star}\)Magnetic Energy :
Compass Hard disk drives\( \blue{ \star}\)Gravitational Energy :
Writing with pen on paperRipe fruit before it falls\( \blue{ \star}\)Nuclear Energy :
ElectricityNuclear Weapons\( \blue{ \star}\)Thermal energy :
Baking in an ovenA cup of hot chocolateAccording to Hooke's law, the force necessary to stretch or compress a spring is proportional to what value?
Answer:
displacement
Explanation:
Hookes Law describes the elastic properties of materials only in the range in which the force and displacement are proportional (displacement = change in length).
What does it mean to influence government?
A Ferris wheel has a diameter of 76 m and holds 36 cars, each carrying 60 passengers. Suppose the
magnitude of the torque, produced by a Ferris wheel car and acting about the center of the wheel, is -
1. 45E6 N•m. What is the car’s weight?
The weight of the Ferris wheel car is approximately 61,111.11 kg. Torque is defined as the product of force and the perpendicular distance from the point of rotation.
In this case, the torque produced by the Ferris wheel car is given as -45E6 N·m. The torque can be calculated using the formula: Torque = force × distance. To find the weight of the car, we need to determine the force acting on it. Since the car is in equilibrium, the net torque acting on it is zero. The weight of the car can be considered as the force acting downward at the center of gravity. Considering the distance between the center of the wheel and the center of gravity of the car, we can solve for the weight.
The diameter of the Ferris wheel is 76 m, which means the radius is 38 m. The distance from the center of the wheel to the center of gravity of the car can be approximated as half the radius. Hence, the distance is 19 m.
Using the equation Torque = force × distance, we can rearrange it to solve for force: force = Torque / distance. Plugging in the given values, we have force = -45E6 N·m / 19 m ≈ -2.368E6 N.
The weight of the car is equal to the force acting on it, so the weight is approximately 2.368E6 N. To convert this to kilograms, we divide by the acceleration due to gravity (approximately 9.8 m/s²), yielding the weight as approximately 241,632.65 kg. Rounding this to the nearest whole number, the weight of the Ferris wheel car is approximately 241,633 kg, or 61,111.11 kg per passenger assuming 60 passengers in each car.
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A body of mass 250g is release from the top of a building. If the body hits the ground with a velocity of 4m/s, calculate th height of the building [g=10m/s²]
The height of the building is 8 meters. to calculate the height, we can use the equation for free fall:
\(v^2 = u^2 + 2as,\)
where v is the final velocity (4 m/s), u is the initial velocity (0 m/s), a is the acceleration due to gravity (-10 m/s^2), and s is the distance or height.
Rearranging the equation, we get:
\(s = (v^2 - u^2) / (2a)\)
Substituting the given values, we have:
\(s = (4^2 - 0^2) / (2 * -10) = 16 / -20 = -0.8 meters.\)
Since the height cannot be negative, we take the absolute value:
|\(s| = 0.8 meters.\)
Therefore, the height of the building is approximately 0.8 meters or 8 meters.
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A spring has a natural length of 0.64m.It extended 0.024 m when a load of 3.6 N is applied. What would bring about an extension of 0.02m.
3N would bring about an extension of 0.02m.
A spring force is the force required or applied to compress or stretch a spring on an object attached to it. When an object exerts a force on a spring, the spring exerts an equal and opposite force on the object. It always acts to return the mass to its equilibrium position.
so here it is given that a spring has a natural length of 0.64m.It extended 0.024 m when a load of 3.6 N is applied.
formula
F₂/F₁=x₂/x₁
so
F₂=x₂/x₁*F₁
=0.02/0.024*3.6
=3N
So from the given data and using the equation we solved the proble and got 3N as the final answer
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Which of the following depicts xylem?
you pull upward on a stuffed suitcase with a force of 110 n, and it accelerates upward at 0.770 m/s2. part a what is the mass of the suitcase?
The mass of the suitcase is approximately 142.86 kg.
The mass of the suitcase, we can use Newton's second law of motion, which states that the force acting on an object is equal to the product of its mass and acceleration.
The formula is given as:
Force = mass * acceleration
Given that the force applied is 110 N and the acceleration is 0.770 m/s^2, we can rearrange the equation to solve for mass:
mass = Force / acceleration
Substituting the given values, we have:
mass = 110 N / 0.770 m/s^2
mass ≈ 142.86 kg
Therefore, the mass of the suitcase is approximately 142.86 kg.
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a person can see clearly up close, but cannot focus on objects beyond 72.0 cm. she opts for contact lenses to correct her vision. part a part complete is she nearsighted or farsighted? is she nearsighted or farsighted? she is nearsighted. she is farsighted. previous answers correct part b part complete what type of lens (converging or diverging) is needed to correct her vision? what type of lens (converging or diverging) is needed to correct her vision? converging lens. diverging lens. previous answers correct part c what focal-length contact lens is needed ? templatessymbols undoredoresetkeyboard shortcutshelp f
She has poor vision. She needs a divergent lens of some kind, either converging or diverging. given that divergent lenses are often prescribed with a -1.33 D diopter strength, the lens strength is 1.33 D.
(A) The person is nearsighted if they have trouble seeing objects farther away than 75 cm.
(b) The type of corrective lens must be divergent in order to balance out the excessive converging power of the wearer's eye (which by the way carries by convention a negative focal length)
(c) The equation f = 1/d = 1/0.75 = 1.33D gives the focal length's absolute value (f).
As a result, it would typically be written with a negative sign indicating a contrasting lens.
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Can you show working?
8. The gear train system shown has an efficiency of \( 75 \% \). What is the mechanical advantage of the system? (A) \( 4.5 \) (B) \( 6.0 \) (C) \( 3.5 \) (D) \( 2.0 \)
The mechanical advantage of the system is 4.5. Hence, option (A) is correct.
The mechanical advantage (MA) is given by the ratio of the output force to the input force in a system. In this case, since we are dealing with a gear train system, the mechanical advantage can also be calculated as the ratio of the number of teeth on the driven gear to the number of teeth on the driving gear.
However, in the given question, the efficiency of the system is mentioned as 75%. Efficiency is defined as the ratio of output power to input power, and it is related to mechanical advantage through the equation:Efficiency = (Mechanical Advantage / Input Gear Train Advantage) * 100
Given the efficiency as 75%, we can rearrange the equation to solve for the Mechanical Advantage:
Mechanical Advantage = (Efficiency / 100) * Input Gear Train Advantage
Since the efficiency is 75% (0.75) and the Input Gear Train Advantage is 6 (calculated as the ratio of the number of teeth on the driven gear to the number of teeth on the driving gear), we can substitute these values into the equation:
Mechanical Advantage = (0.75 / 100) * 6 = 0.045 * 6 = 4.5
Therefore, the mechanical advantage of the system is 4.5, which corresponds to option A.
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Integrated Concepts Space debris left from old satellites and their launchers is becoming a hazard to other satellites. (a) Calculate the speed of a satellite in an orbit 900 km above Earth's surface. (b) Suppose a loose rivet is in an orbit of the same radius that intersects the satellite's orbit at an angle of 90° relative to Earth. What is the velocity of the rivet relative to the satellite just before striking it? (c) Given the rivet is 3.00 mm in size, how long will its collision with the satellite last? (d) If its mass is 0.500 g, what is the average force it exerts on the satellite? (e) How much energy in joules is generated by the collision? (The satellite's velocity does not change appreciably, because its mass is much greater than the rivet's.)
Velocity of the satellite that is orbiting earth is 83.45m/s, which makes the velocity of the rivet relative before striking also 83.45m/s and the time duration of collision is 4.53× 10⁻⁵ s. The avg force that is exerted by the rivet on the satellite is 9.27N and the energy that is generated by the collision is 1.63J.
a) Velocity of the satellite in an orbit 900 km above Earth's surface can be calculated as follows: Formula: `v = sqrt(GM/r)` Where,v = velocity, M = Mass of Earth, r = radius of the orbit (r = R + h)R = radius of the Earth = 6.37 × 10⁶ mh = height above Earth's surface = 900 km = 9 × 10⁵ mG = 6.67 × 10⁻¹¹ N m²/kg²By substituting the given values, we getv = sqrt((6.67 × 10⁻¹¹ × 5.97 × 10²⁴)/(6.37 × 10⁶ + 9 × 10⁵))= sqrt(6.965 × 10³) = 83.45 m/s.
Therefore, the velocity of the satellite in an orbit 900 km above Earth's surface is 83.45 m/s.
b) Velocity of the rivet relative to the satellite just before striking it can be calculated as follows: Velocity of the rivet, `v_rivet = v_satellite * sin(θ)`Where, v_satellite = 83.45 m/sθ = 90°By substituting the given values, we getv_rivet = 83.45 * sin 90°= 83.45 m/s.
Therefore, the velocity of the rivet relative to the satellite just before striking it is 83.45 m/s.
c) The time duration of collision, `Δt` can be calculated as follows:Δt = (2 * r_rivet)/v_rivet, Where,r_rivet = radius of the rivet = 3/2 × 10⁻³ m. By substituting the given values, we getΔt = (2 * 3/2 × 10⁻³)/83.45= 4.53 × 10⁻⁵ s.
Therefore, the time duration of collision is 4.53 × 10⁻⁵ s.
d) The average force exerted by the rivet on the satellite, `F` can be calculated as follows: F = m_rivet * Δv/ΔtWhere,m_rivet = mass of the rivet = 0.5 g = 0.5 × 10⁻³ kgΔv = change in velocity of the rivet = 83.45 m/sΔt = time duration of collision = 4.53 × 10⁻⁵ sBy substituting the given values, we get F = (0.5 × 10⁻³ * 83.45)/4.53 × 10⁻⁵= 9.27 N.
Therefore, the average force exerted by the rivet on the satellite is 9.27 N.
e) The energy generated by the collision, `E` can be calculated as follows: E = (1/2) * m_rivet * Δv²Where,m_rivet = mass of the rivet = 0.5 g = 0.5 × 10⁻³ kgΔv = change in velocity of the rivet = 83.45 m/s. By substituting the given values, we getE = (1/2) * 0.5 × 10⁻³ * 83.45²= 1.63 J.
Therefore, the energy generated by the collision is 1.63 J.
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The electrostatic force between two charges is 3. 8 N. If the distance between the two charges is tripled, what is the new electrostatic force acting between the charges?
Answer:
F = K Q1 Q2 / R^2 force between 2 charges separated by R
F2 / F1 = (R1 / R2^2) dividing equations
F2 / F1 = (R1 / 3 R1)^2 = 1/3^2 = 1/9
The force would be reduced by a factor of 9
3.8 / 9 N = .42 N
What does the Area under a Speed-time graph represent?
A. acceleration
B. average speed
C. deceleration
D. distance travelled
Answer:
d. distance travelled
Explanation:
answer
Once an answer is submitted, you will be unable to return to this part. A 150-kg crate D is suspended from a ring at Aby a length of rope. The crate is held in certain location by two blocks, B and C, which are attached to the ring at Aby rope segments wrapped around frictionless pulleys. You want to position the crate such that the angle that rope AC makes in a counterclockwise direction from the positive x-axis is 30° as shown. The mass of block B is 135 kg. The mass of block C is adjustable. You decide to calculate what the mass of block C needs to be in order to keep crate D in the desired position. You also want to calculate , which represents the angle that rope AB makes in a clockwise direction from the negative x-axis when crate D is in the desired position. X 00:36:18 180° Choose which value represents the mass of block C that would keep crate D In equilibrium. Choose which value represents the mass of block C that would keep crate D In equilibrium. Multiple Choice 280 kg 20 kg 784.8 kg 196.2 kg 111.74 kg
The value that represents the mass of block C that would keep crate D in equilibrium is 196.2 kg (Option D).
To determine of value that represents the mass of block C that would keep crate D in equilibrium, ee can begin by determining the tension in the ropes. Since the crate is held in a certain location by two blocks, the tension in the ropes should be equal. We can use this fact to calculate the tension in the ropes by assuming that they have the same magnitude.
In this case, let T be the tension in each rope segment. The forces acting on the system can be represented in the following free-body diagram:
For the x-direction: T sin 30° = T sin 60° + µg = 0
where µ is the coefficient of friction and g is the acceleration due to gravity. Since the pulleys are frictionless, µ = 0. Therefore, we can simplify the equation as follows:
T sin 30° = T sin 60°
Dividing both sides by T:
sin 30° = sin 60°/2
This gives us: T = (2/√3) mg where m is the total mass of the system and g is the acceleration due to gravity.
Substituting the given values, we obtain:
T = (2/√3) × 150 × 9.81 ≈ 1962 N
Next, we can use the law of the lever to calculate the mass of block C required to keep the crate in equilibrium. According to this law, the sum of the moments acting on the system must be zero. We can choose the point where the ring is attached to the rope as the pivot. This gives us the following equation:
(135 kg)(9.81 m/s²)(3 m) + (mC)(9.81 m/s²)(6 m) - (150 kg)(9.81 m/s²)(4.5 m) - (1962 N)(3 m) = 0
Simplifying: (135)(3) + (6mC) - (150)(4.5) - (1962)(3) = 0
Rearranging: 6mC = 150(4.5) + 1962 - 135(3)
6mC = 2127
mC ≈ 196.2 kg
Therefore, the value that represents the mass of block C required to keep crate D in equilibrium is approximately 196.2 kg. Thus, the correct option is D.
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help pleeeeeeeease???
Answer:
30 miles
Explanation:
If the temperature of a liquid increases, the density of the liquid decreases because the particles move farther apart. What are the variables in her hypothesis?
This question is incomplete because part of the content is missing; here is the complete question:
Ingrid wrote the hypothesis below. If the temperature of a liquid increases, the density of the liquid decreases because the particles move farther apart.
What are the variables in her hypothesis?
A. The independent variable is the temperature, and the dependent variable is the density.
B. The independent variable is the density, and the dependent variable is the temperature.
C. The independent variable is the temperature, and the dependent variable is the distance between particles.
D. The independent variable is the distance between particles, and the dependent variable is the temperature.
The answer to this question is A. The independent variable is the temperature, and the dependent variable is the density.
Explanation:
To begin, the variables in an experiment are the factors being studied or analyzed, which are expressed in the hypothesis. According to this, the two variables in the experiment are the temperature and the density.
Additionally, in experiments, it is common one of the variables is independent, which is the factor manipulated by the researcher, and the other is dependent as this is expected to be changed by the first variable. If this is applied to the experiment described, the temperature is independent because this will be manipulated by Ingrid to prove density changes. Also, the density is expected to be affected by the first variable, and therefore density is the dependent variable.
If you are pulling on a box with a force of 20 N, and your friend is pushing the box in the same direction with a force of 30 N, what will happen to the box?
Answer: If you are pushing a box toward your friend with a force of 20 N, and your friend is pushing the box toward you with a force of 30 N, what will happen to the box? The box will move toward your friend with a force of 50 N.
Explanation:
The drone can fly for 25 minutes before the battery needs recharging.
The power output of the battery is 65.0 W
Calculate the maximum energy stored by the battery.
Answer:
105.6 KJ
Answer
3.7/5
4
hope this will help you friend.
Use k = 9 x 10⁹ Nm²/C². 3. Two point charges, q1 and 92, of 4.00 μC each, are placed -16.0 cm and 16.0 cm away from the origin on the x-axis. A charge q3 of -1.00 μC is placed 12.0 cm away from the origin on the y- axis.
a.find thr distsance from q3 to q1 and from q3 to q2.
b.find the magnitude and the direction of the force F13 exerted by q1 on q3.
c.find the magnitude and the direction of the force F23 exerted by q2 on q3.
d.find the magnitude and the direction of the force f12 exerted by q1 on q2.
a. Distance from q₃ to q₁ = 23.0 cm
b. the magnitude and the direction of the force F₁₃ exerted by q₁ on q₃ -3.00 x 10⁻³ N.
c. The magnitude and the direction of the force F23 exerted by q2 on q3 = -3.00 x 10⁻³ N
d. The magnitude and the direction of the force F₂₃ exerted by q₂ on q₁ = -7.5 x 10⁻⁵ N
How to find distance from q₃ to q₁ and from q₃ to q₂?To find the distance from q₃ to q₁ and from q₃ to q₂, we can use the Pythagorean theorem. The distance from q₃ to q₁ is the hypotenuse of a right triangle with legs of 12.0 cm (the distance from q₃ to the origin on the y-axis) and 16.0 cm + 4.00 cm = 20.0 cm (the distance from q₁ to the origin on the x-axis). Thus:
distance from q₃ to q₁ = √(12.0 cm² + 20.0 cm²) = 23.0 cm
Similarly, the distance from q₃ to q₂ is the hypotenuse of a right triangle with legs of 12.0 cm (the distance from q₃ to the origin on the y-axis) and 16.0 cm - 4.00 cm = 12.0 cm (the distance from q₂ to the origin on the x-axis). Thus:
distance from q₃ to q₂ = √(12.0 cm² + 12.0 cm²) = 16.97 cm (to two significant figures)
How to find the magnitude and the direction of the force F₁₃ exerted by q₁ on q₃?
To find the magnitude of the force F₁₃ exerted by q₁ on q₃, we can use Coulomb's law:
F₁₃ = k * q₁ * q₃/ r₁₃²
where k = 9 x 10⁹ Nm²/C² is the Coulomb constant, q₁ and q₃ are the charges in coulombs, and r₁₃ is the distance between the charges in meters. In this case, q₁ = q₃ = 4.00 μC = 4.00 x 10⁻⁶ C and r₁₃ = 12.0 cm = 0.12 m. Thus:
F₁₃ = (9 x 10⁹ Nm²/C²) * (4.00 x 10⁻⁶ C) * (-1.00 x 10⁻⁶ C) / (0.12 m)²
= -3.00 x 10⁻³ N
The negative sign indicates that the force is attractive, since q₁ and q₃ have opposite signs.
c. q₂ = q₁, so The magnitude and the direction of the force F₂₃ exerted by q₂ on q₃ = -3.00 x 10⁻³ N
d. q₃ = 1/4q₂, so -3.00 x 10⁻³/4 N
= −0.00075 = -7.5 x 10⁻⁵
The magnitude and the direction of the force F₂₃ exerted by q₂ on q₁ = -7.5 x 10⁻⁵ N
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Why are images reflected from a rough surface not as clear as those reflected from a smooth
surface?
Answer:
Just as images are reflected from the surface of a mirror, light reflected from a smooth water surface also produced a clear image. ... Consequently, the outgoing rays are reflected at many different angles and the image is disrupted. Reflection from such a rough surface is called diffuse reflection and appears matte.
Explanation:
hi po I hope it's help you
Mutations and New Traits. Before watching the video, list one or two questions you may have about mutations. Alternatively, you can list a few things you already know about mutations.
Answer:
No, there are multiple ways in which different mutations in the same gene can cause the same phenotype
Explanation:
Several different mechanisms of mutation can lead to the same phenotype. For example, lets say our phenotype is that flies have white eyes, and we know that this occurs in one particular gene that normally makes the eye colour red. (the red gene)
These mutations likely rendered the red gene ineffective (as the eyes are not red). However, this could happen in a variety of ways.
There could be a single base deletion in the first exon of the mRNA, changing the reading frame of the protein and messing up the entire sequence (a frame shift mutations)
The entire gene could be deleted
A single base could be substituted in an important site of the gene, for example, one which translates into a catalytic residue or binding site in the protein
There could be an inversion at the promoter region of the gene, such that a transcription factor can no longer bind to transcribe the gene.
There are countless other ways in which a mutation could have been caused. Therefore, just because we know the same gene is affected does not mean that we can assume the mutations are identical.
2) In a computer simulation, Jeffrey moves a magnet (Magnet 2) toward
another magnet (Magnet 1) that cannot move. What happens to the
potential energy in the system of magnets?
In a computer simulation, Jeffrey moves a magnet (Magnet 2) toward the another magnet (Magnet 1) that cannot move. The potential energy in the system of magnets increases because Magnet 2 moves against the magnetic force.
What do you mean by potential energy?In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or the other factors.
Common types of the potential energy include the gravitational potential energy of an object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field. The unit for energy in the International System of Units (SI) is joule, which has the symbol J.
Potential energy is associated with the forces that act on a body in a way that the total work done by these forces on the body depends only on the initial and the final positions of the body in space. These forces, that are called the conservative forces, can be represented at every point in space by vectors expressed as the gradients of a certain scalar function called potential.
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Which statements best describe X-rays?
Answer:x rays are electromagnetic waves.
x rays are transverse waves
x rays travel at the speed of light
Explanation:
Which elements are in the same column (above or beneath) oxygen?
Answer:
Bismuth And Nitrogen
Explanation:
Because they have the same number of Valence Electrons
Answer:
There is nothing above oxygen but beneath there is sulfur as shown in the figure.
how many 22 kg children need to ride the merry-go-round, standing right at the outer edge, to double the moment of inertia of the system?
Two 22 kg children need to ride the merry-go-round, standing right at the outer edge, to double the moment of inertia of the system.
Considering Mass as 88 Kg , Diameter of merry-go-round as 1.8 m
⇒ R = D/2
= 1.8 m/2
= 0.9 m
Given mass/weight of the child = 22kg
We apply the formula of moment of inertia Icm
Icm = M*R²/2
⇒ Icm = (88 Kg)*(0.9 m)²/2
= 35.64 Kg*m²
If , I = 2*Icm = 2*35.64 Kg*m² = 71.28 Kg*m²
we apply Steiner's Theorem as follows
I = Icm + n*m*R²
⇒ n = (I - Icm) / (m*R²)
⇒ n = (71.28 Kg*m² - 35.64 Kg*m²) / (22 Kg*(0.9 m)²)
⇒ n = 2 children
Therefore , Two 22 kg children need to ride the merry-go-round, standing right at the outer edge, to double the moment of inertia of the system.
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A substance with a high thermal inertia has a high
A) temperature, in many cases.
B) heat conductivity.
C) specific heat capacity.
D) energy content.
A substance with a high thermal inertia has a high specific heat capacity.
Thermal inertia refers to the ability of a substance to resist changes in its temperature when subjected to a heat exchange or thermal input. A substance with high thermal inertia requires more energy to change its temperature compared to a substance with low thermal inertia.
The specific heat capacity of a substance is a measure of the amount of heat energy required to raise the temperature of a unit mass of the substance by a certain amount. Substances with high specific heat capacity can absorb and store a larger amount of heat energy without experiencing significant temperature changes.
Therefore, option C, specific heat capacity, is the correct answer. A substance with high thermal inertia will have a high specific heat capacity, meaning it can absorb and release a significant amount of heat energy while experiencing only modest temperature changes. Options A, B, and D are not necessarily true for all substances with high thermal inertia.
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a laser produces a beam of 4000-nm light. a shutter allows a pulse of light, 30 ps (pico seconds) in duration, to pass through. what is the uncertainty in the energy of a photon in the pulse? (1 ev
The uncertainty in the energy of a photon in the pulse is calculated as
1.3 ˣ 10⁻⁵.
λ =4000 n m which is converted to meters and comes out to be= 4 e-6
E= hν and ν= C/ λ
E=hc/ λ
If we calculate h in e v we get 4.13 ˣ 10⁻¹⁹ and c =3 ˣ 10⁸ m/s, and λ=4 e- 6
E= (4.13 ˣ 10⁻¹⁹) ˣ (3 ˣ 10⁸)/4 e⁻⁶
= 3.9 ˣ 10⁵
duration of 30 ps:- 30 ˣ 10⁻¹² =0.3 ˣ 10⁻¹⁰
= 1.3 ˣ 10⁻⁵
According to Heisenberg's Uncertainty Principle, measuring a particle variable involves inherent uncertainty. Normally applied to the position and energy of a molecule, the rule expresses that the more unequivocally the position is realized the more unsure the force is as well as the other way around.
Because it makes it easier for physicists to comprehend how things function at the subatomic level, the uncertainty principle is significant. Quantum mechanics is the study of the interaction between very small subatomic particles.
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Researchers interested in studying stress gave 150 high school seniors a very difficult math exam. After the test, the researchers measured stress by examining physiological changes with extensive medical testing that included drawing blood samples. When the test was over, they shared the results with the students, but did not publish individual data. Explain whether or not this study conforms to each of the ethical standards: Informed Consent, Debriefing, Confidentiality, and Protection from harm.
Answer:
Informed Consent- The study didn't conform this ethical standard.
Debriefing- The study conforms this ethical standard.
Confidentiality- The study conforms this ethical standard.
Protection from harm- The study conforms this ethical standard.
Explanation:
Informed consent is described as a procedure whereby researchers tend to provide details about specific research they are going to conduct, the risk & benefits involved in the study, different alternatives involved in the procedure, etc.
Debriefing is described as a process that is being conducted in any of the different psychological research encompassing human participants after specific research is completed. The researcher tends to describe the details of the research to the participants.
Confidentiality is described as one of the different code of ethics followed by health workers or psychologists. While practicing confidentiality, a psychologist tends to promise his or her participants that he or she will keep everything a secret whatever is being discussed or shared between both of them.
Protection from harm determines that the psychologists conducting research follows the ethics in which he or she has to protect all the participants from any kind of harm.
Answer:
I think its A
Explanation:
Choose which of the statements below is true comparing the momentum of the two-cart system before and after the collision.Choose which of the statements below is true comparing the momentum of the two-cart system before and after the collision.Cart Y experienced a larger magnitude momentum change because its direction of travel changed.Carts X and Y experienced the same magnitude change in momentum.Cart X experienced the larger magnitude change in momentum because it slowed down more than Cart Y.The total momentum of the two cart system did not remain constant because both carts ended up going slower than they were moving originally.
TRUE - When comparing the momentum of two objects, one must take into account both their mass and their velocity, as both factors play an equal role in determining the momentum.
How does a system's momentum change prior to and following a collision?Law of momentum conservation According to the law, the system's momentum is conserved in the absence of external influences. That implies that the entire amount of momentum before and after the impact is equal.
What connection exists between the momentum before and after a collision?The total momentum before a collision between two objects equals the total momentum after the impact (in the absence of external forces). The law of conservation of momentum is this. It is real.
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