you push on a 2-kg block initially at rest on a frictionless surface with 10n of force horizontal for 5m on level ground before letting go. the block slides into a loop with a radius of 0.5 m. what velocity will the block have at the top of the loop?
Answers
You push on a 2-kg block initially at rest on a frictionless surface with 10n of force horizontal for 5m on level ground before letting go. the block slides into a loop with a radius of 0.5 m. The velocity will the block have at the top of the loop is determined as 7.071 m/s.
To find the velocity, the given values are,
Mass m = 2 Kg
Force F = 10 N
Displacement = 5m
Radius = 0.5 m
What is Work energy theorem?The work-energy theorem states that the change in the kinetic energy is equal to the amount of work done.
Energy is ability to do work. To perform work, energy has to be spent. Work is said to be done whenever the force is applied to an object then the object is moved to a certain distance.
According to work energy theorem, the work done on an object is equal to the change in kinetic energy of the object.
So, work done = Kinetic energy
Force × Displacement = 1/2 mv²
Thus, the velocity can be determined as
velocity v = √(2×Force×Displacement/m)
Substituting all the given values,
Velocity, v = \(\sqrt{\frac{2*10*5}{2} }\)
v = √50
v = 7.071 m/s.
So, the block's velocity is determined as 7.071 m/s.
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Related Questions
If the road becomes wet or crowded, you should ____. slow down and increase your following distance All choices are incorrect. maintain your speed and following distance speed up and decrease your following distance Submit answer
Answers
Answer:
The first one.
If the road becomes wet or crowded, you should ___ slow down and increase your following distance_
What is meant by surface distance ?
The safe distance between vehicles traveling in column specified by the command in light of safety requirements
The slower speed will help you save gas and avoid potential accidents. You can easily eliminate chances of rear end collision by maintaining a safe distance between your car and the vehicles ahead.
hence , a) slow down and increase your following distance is a correct option
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according to special relativity, one can travel at increased rates
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According to special relativity, one can travel at increased rates. However, this is only possible when moving at very high speeds approaching the speed of light. When an object moves at high speeds, the time slows down, and the length of the object appears to be shortened.
These observations are known as time dilation and length contraction. Time dilation refers to the difference in the elapsed time measured by two observers, where one is stationary, and the other is moving at a constant velocity relative to each other. The faster the moving observer, the slower time appears to be for them. Length contraction, on the other hand, refers to the phenomenon where an object appears to be shorter in length when it's moving at high
This effect is more noticeable as the speed of the object approaches the speed of light. As a result, traveling at very high speeds can allow one to cover great distances in less time, which can be used for space exploration and other scientific research. However, it's worth noting that the effects of relativity are only noticeable at very high speeds, which are currently impossible to achieve with our current technology.
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A ball is thrown with a velocity of 15 m/s. If the de Broglie wavelength of the ball is 4.02 E-35 m, what is the mass of the ball?
O0.54 kg
O 0.72 kg
O 0.90 kg
01.1 kg
Answers
The mass of the ball is approximately 0.90 kg.
The de Broglie wavelength (λ) of a particle is given by the equation λ = h / p, where h is the Planck's constant and p is the momentum of the particle. In this case, we are given the de Broglie wavelength (4.02 E-35 m) and the velocity of the ball (15 m/s).
To find the momentum (p) of the ball, we can use the equation p = m * v, where m is the mass of the ball and v is its velocity. Rearranging the equation, we get m = p / v.
Substituting the given values, we have p = h / λ = (6.626 x 10^-34 J·s) / (4.02 x 10^-35 m) ≈ 1.647 x 10^-9 kg·m/s.
Now, we can calculate the mass of the ball by dividing the momentum by the velocity: m = (1.647 x 10^-9 kg·m/s) / (15 m/s) ≈ 1.098 x 10^-10 kg ≈ 0.90 kg (rounded to two decimal places).
Therefore, the mass of the ball is approximately 0.90 kg.
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In a competition, an athlete threw a flying disk 145 meters through the air. While in flight, the disk traveled at an average speed of 12.0 m/s. How long did the disk remain in the air?
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Hop off this app because im telling the teacher because this is cheating and thats wrong. periodt pooh..
What is the purpose of using conductors in a circuit?
Answers
Answer:
Conductors and insulators are both important in the field of electronics. Electrical conductors allow electric current to flow easily because of the make up of their atoms. In a conductor, the outer electrons of the atom are loosely bound and can freely move through the material when an electric charge is applied.
Explanation:
In reality, there is friction in the piping, which means that an additional pressure equivalent to a height of 100 m is needed to pump the water from the bottom tank to the top tank. What is the minimum power required when accounting for friction? By what percentage has friction increased the minimum power required? Remember to show your calculations.
Answers
An additional pressure equivalent to a height of 100 m is needed to pump the water from the bottom tank to the top tank if there is no friction. The minimum power required is around 6880 kg * \(m^2/sec^3.\)
To calculate the minimum power required when accounting for friction in pumping water between tanks, we need to consider the additional pressure required and the flow rate.
Given:
Additional pressure due to friction = 100 m
Let's assume the flow rate is Q (in cubic meters per second).
The power (P) required to pump water can be calculated using the formula:
P = Q * ρ * g * H
where ρ is the density of water and g is the acceleration due to gravity.
We can express the additional pressure (ΔP) in terms of the height of the water column:
ΔP = ρ * g * Δh
Solving for Δh, we find:
Δh = ΔP / (ρ * g)
Substituting the given values:
P = \((0.6 m^3/sec * 8.5 m * 1000 kg/m^3) / 0.75 + (0.6 m^3/sec * 100 m) / 0.75\)
P = \((5100 kg * m^2/sec^3) / 0.75 + (60 m^2/sec^2) / 0.75\)
P = \(6800 kg * m^2/sec^3 + 80 m^2/sec^2\)
P = \(6880 kg * m^2/sec^3\)
Therefore, the minimum power required, accounting for friction, is approximately \(6880 kg * m^2/sec^3.\)
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How come on Mercury the day is 58 Earth days. But Mercury is closest to the sun, meaning that the time on Mercury would be faster? It makes no sense...
Answers
Answer:Mercury spins slowly on its axis and completes one rotation every 59 Earth days. But when Mercury is moving fastest in its elliptical orbit around the Sun (and it is closest to the Sun), each rotation is not accompanied by sunrise and sunset like it is on most other planets.
Explanation:
Use Coulombs Law to calculate the force between a 0.05 C charge and a 0.06 C charge when they are 2 meters apart from each other
Answers
Answer:
6,740,663.84 N
Explanation:
Coulombs Law states that \(F = k\frac{q_{1} q_{2}}{r^{2}}\), where k = coulombs law, q1 and q2 are charge one and charge 2 respectively, and r is distance
Substitute for q1 and q2, multiply .05 and .06 together
\(f= k \frac{.003}{r2}\)
Substitute for r, simplify \(2^{2}\)
\(f= k \frac{.003}{4}\)
Divide .003 by 4
\(f=k*.00075\\\)
Substitute in k
\(f=(8.9875517873681764 * 109 N.m2.C-2)*.00075\)
\(force = 6740663.8405261\)
What is TRUE about cancer cells?
They are just like normal cells except for the way they function.
They form an encapsulated tumor that keeps them in one area of the body
They do not function appropriately in the tissue or organ they are a part of.
The mutations in cancer cells are caused by environmental factors.
Answers
Answer:
they do not function appropriately in the tissue or organ they are a part of.
The statement that is true about cancer cells is They do not function appropriately in the tissue or organ they are a part of. Option C is the correct answer.
Cancer cells differ from normal cells in several ways. One of the key characteristics of cancer cells is that they lose their normal function and behavior within the tissue or organ they originate from. Option C is the correct answer.
Normal cells have specific roles and functions within the body, contributing to the overall health and proper functioning of the tissue or organ they are a part of. In contrast, cancer cells undergo a series of genetic mutations that disrupt their normal function. These mutations can lead to uncontrolled cell growth and division, which is a hallmark of cancer. As a result, cancer cells no longer perform the specialized functions of the tissue or organ they are derived from, and they can interfere with the normal functioning of nearby healthy cells.
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The complete question is, "What is TRUE about cancer cells?
a. They are just like normal cells except for the way they function.
b. They form an encapsulated tumor that keeps them in one area of the body
c. They do not function appropriately in the tissue or organ they are a part of.
d. The mutations in cancer cells are caused by environmental factors."
a loop with a break in it that prevents current form flowing is called a(n) blank circuit
Answers
Answer: it is called a open circuit
Explanation:
The mass number of an isotope of uranium is 238, and its atomic number is 92. which symbol best represents this isotope of uranium? subscript 92 upper u. superscript 238 subscript 92 upper u. superscript 92 subscript 238 upper u. superscript 92 upper u.
Answers
The symbol that represents the isotope that has a mass number of 238, and an atomic number of 92 is 238 subscript 92 upper u.
What is an isotope?Isotopes are any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei.
This means that isotopes possess different mass numbers but the same atomic number.
According to this question, the mass number of an isotope of uranium is 238, and its atomic number is 92. This means that the symbol of this isotope is as follows: 238/92 U.
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Answer:
B. \(\frac{238}{92}\) U
Explanation:
edge 2022
Why is endurance training important to you?
Answers
Answer:
keeps your circulatory system healthy
Explanation:
Answer:
Explanation:
Endurance training important to me because It is a really good for staying fit but I also like cardeo.
as a spacecraft passes directly over cape canaveral, radar pulses are transmitted toward the craft and are then reflected back toward the ground. if the total time interval was 3.00 * 10^-3, how far above the ground was the spacecraft when it passed over cape canaveral?
Answers
The spacecraft was approximately 450,000 meters above the ground when passing directly over Cape Canaveral.To find the distance of the spacecraft above the ground when passing over Cape Canaveral, we can use the equation:
distance = (speed of light x time interval) / 2
Since the radar pulses are transmitted toward the craft and reflected back, the distance traveled by the pulses is twice the distance of the spacecraft from the ground.
Therefore, we divide the result by 2.
The speed of light is approximately 3.00 x 10^8 m/s. The time interval is given as 3.00 x 10^-3 s. Plugging these values into the equation, we get:
distance = (3.00 x 10^8 m/s x 3.00 x 10^-3 s) / 2
distance = 450,000 m
Therefore, the spacecraft was approximately 450,000 meters above the ground when passing directly over Cape Canaveral. This distance is equivalent to about 450 kilometers or 280 miles. It is important to note that this calculation assumes a straight-line path of the craft above Cape Canaveral, and any deviations or fluctuations in the spacecraft's altitude could affect the accuracy of the result.
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fill in the blanks
11) Stored energy is called ________ energy.
12) When you move your hand or foot, your body has converted potential energy into ________ energy.
13) When coasting while roller skating, you eventually stop due to ________.
14) A ball has 100 J of potential energy when it is on a shelf. The kinetic energy of the ball the instant it hits the floor is ________J.
Answers
parfit thinks that claiming god as being the cause of the big bang is:
Answers
Parfit, a prominent philosopher, argues that claiming God as the cause of the Big Bang is problematic. He suggests that using God as an explanation for the origin of the universe is not satisfying, as it merely replaces one mystery with another.
Additionally, Parfit asserts that invoking God as the cause of the Big Bang raises questions about the nature of God. Furthermore, Parfit asserts that science provides a more plausible explanation for the origin of the universe. Scientists have proposed various theories, such as the inflationary model and the cyclic model, that attempt to explain the origins of the universe without the need for a divine creator.
In conclusion, Parfit does not find the argument that God caused the Big Bang to be convincing, as it raises more questions than it answers. Instead, he advocates for relying on scientific theories to explain the origins of the universe.
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7. Tad drops a cherry pit out the car window 5.0 m above the
ground while traveling down the road at 35m/s. How far,
horizontally, from the initial dropping point will the pit hit the
ground?
8. Draw a picture of the situation in question 7
Answers
The distance horizontally, from the initial dropping point that the pit hit the ground is 11.2 meters.
How do we calculate for distance?
The formula of distance is Distance = Speed x Time which is measured in meters.
7. The height of the car window h = 5.0 metres
The velocity of the car is 35 m/s.
The horizontal velocity of the cherry pit when it is released is then the same as that of the car Vx = 35m/s
The dropped cherry pit falls freely under gravity with a vertical downward acceleration equal to the acceleration due to gravity, g
Initially, the pit has no vertical component of velocity.
Therefore the time it takes to reach the ground t = \(\sqrt{} \frac{2h}{g}\)
t = √10/9.8
t= 0.32 seconds
The horizontal component of velocity is a constant, since there are no forces acting in the horizontal direction.
Therefore the horizontal distance travelled by the pit by the time it hits the ground is Vx * time
= 35 x 0.32
= 11.2 meters
attached is a picture of the situation above, where Vx = 35m/s
h = 5.0 meters
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A 1500 kg car traveling 5.0 m/s collides head on with a 3000 kg truck traveling
7.0 m/s in the opposite direction. If the bumpers lock. What is the velocity of the
two vehicles together immediately following the collision?
Answers
Using law of conservation of momentum
\(\\ \sf\Rrightarrow m_1v_1-m_2v_2=(m1+m2)v_3\)
\(\\ \sf\Rrightarrow 1500(5)-3000(7)=(1500+3000)v_3\)
\(\\ \sf\Rrightarrow 7500-21000=4500v_3\)
\(\\ \sf\Rrightarrow -13500=4500v_3\)
\(\\ \sf\Rrightarrow v_3=-3m/s\)
What is the direction of net force at all points in the projectile's path?
Answers
The direction of net force at all points in the projectile's path is downwards towards the ground.
F = m a
F = Force
m = Mass
a = Acceleration
F ∝ a
The direction of net force is influenced by the direction of acceleration.
In a projectile motion, if the air resistance is considered negligible, there will be no acceleration in horizontal direction. Because, there will be no forces acting in horizontal direction. The only force acting on the projectile is the force of gravity. Gravity pulls the object downwards throughout its motion. So the direction of net force will be downwards at all points in the projectile's path.
Therefore, the direction of net force at all points in the projectile's path is downwards towards the ground.
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What is the distance that an airplane traveling at 600 mph, moves during the time it takes to scan the instruments?, (Time is about 0.5 seconds, 5,280 ft/mi)
Answers
Answer:
d = 134.11 m
Explanation:
Speed of an airplane, = 600 mph
We need to find the distance moved in 0.5 s (to scan the instruments).
1 mph = 0.44704 m/s
It means,
600 mph = 268.22 m/s
Speed = distance/time
Distance, d = v t
d = 268.22 m/s × 0.5 s
d = 134.11 m
So, the distance moved by airplane is 134.11 m.
congugar verbos en primera persona del singular
Answers
An 800 kHz radio signal is detected at a point 3.2 km distant from a transmitter tower. The electric field amplitude of the signal at that point is 320 mV/m. Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed. The magnetic field amplitude of the signal at that point, in nT, is closest to:
Answers
Answer:
1.07 nT
Explanation:
We know that E/B = c where E = electric field amplitude = 320 mV/m = 0.32 V/m, B = magnetic field amplitude and c = speed of light = 3 × 10⁸ m/s.
So, B = E/c
Substituting E and c into B, we have
B = E/c
= 0.32 V/m ÷ 3 × 10⁸ m/s
= 0.1067 × 10⁻⁸ T
= 1.067 × 10⁻⁹ T
= 1.067 nT
≅ 1.07 nT
When we use an analogy that represents the expanding universe with the surface of an expanding balloon, what does the inside of the balloon represent?
Answers
Answer: When we use an analogy that represents the expanding universe with the surface of an expanding balloon, what does the inside of the balloon represent? The inside of the balloon does not represent any part of our universe.
What is the power of 10 when 0.00503 is written in scientific notation?
Answers
Answer:
Negative 3
Explanation:
Bc scientific notation is the zeros either ahead or behind the actual numbers
Answer:
-3
Explanation:
A bus is mobing with aspped of 72km/hr .convert this speed in m/s.
Answers
Answer
ANSWER WITH FULL EXPLANATION
If a speed is given km/h, then the formula to convert the speed from km/h to m/s is
km/h = m/s
In other words, if you want to convert the given speed from km/h to m/s, then multiply the given number by and put "m/s" after it.
The speed of a car is 72 km/h.
Converting the speed into m/s
72 km/h = m/s = 20 m/s
∴ The speed of the car (expressed in m/s) is 20 m/s.
SHORT ANSWER
1km/h=5/18m/s
72km/h=72×5/18m/s
=4×5m/s
=20m/s.
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What name do you give to elements found in group eight on the periodic table
Answers
Answer:
Explanation:
Group 8A — The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name comes from the fact that these elements are virtually unreactive towards other elements or compounds.
which of the following does not influence the speed of water in a
stream?
a. gradient
b. discharge
c. channel geometry
d. flow
Answers
Pption d. flow does not independently influence the speed of water in a stream. Instead, it is an outcome determined by the combined effects of gradient, discharge, and channel geometry.
The flow itself, or the rate at which water moves in a stream, is not an independent factor that influences the speed of water in a stream. Instead, it is a result of other factors such as gradient, discharge, and channel geometry.
a. Gradient: The gradient, or slope, of the stream affects the speed of water. Steeper gradients generally lead to faster-flowing water.
b. Discharge: The discharge of a stream, which refers to the volume of water passing through a given point in a specified amount of time, directly affects the speed of water. Higher discharge results in faster flow.
c. Channel geometry: The shape and dimensions of the stream channel also influence the speed of water. Wider and deeper channels tend to have slower flow, while narrower and shallower channels often lead to faster flow.
Therefore, option d. flow does not independently influence the speed of water in a stream. Instead, it is an outcome determined by the combined effects of gradient, discharge, and channel geometry.
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. the international space station has a mass of approximately 370,000 kg. (a) what is the force on a 150-kg suited astronaut if she is 20 m from the center of mass of the station? (b) how accurate do you think your answer would be?
Answers
The gravitational force between an astronaut of mass 150 kg and the ISS at a distance of 20 m from its center of mass is approximately 9.254 × 10⁻⁸ N. However, other factors like air resistance and velocity could affect the actual force experienced by the astronaut.
To answer your question about the force on a 150-kg astronaut near the International Space Station (ISS), we'll need to use the formula for gravitational force:
F = G * (m1 * m2) / r²
where F is the force, G is the gravitational constant (6.674 × 10⁻¹¹ N m²/kg²), m1 is the mass of the ISS (approximately 370,000 kg), m2 is the mass of the astronaut (150 kg), and r is the distance from the center of mass (20 m).
(a) Plugging in the given values, we get:
F = (6.674 × 10⁻¹¹ N m²/kg²) * (370,000 kg * 150 kg) / (20 m)²
F ≈ 9.254 × 10⁻⁸ N¹
So, the force on the 150-kg astronaut when she is 20 m from the center of mass of the International Space Station is approximately 9.254 × 10⁻⁸ N.
(b) The accuracy of this answer depends on the accuracy of the given values and the assumptions made (e.g., considering the ISS and the astronaut as point masses). However, this calculation gives a reasonable estimate of the gravitational force between the ISS and the astronaut. Keep in mind that other factors, such as air resistance and the astronaut's velocity, could influence the actual force experienced by the astronaut.
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Which example is NOT a part of the electromagnetic spectrum?
Group of answer choices
electricity
microwaves
violet light
radio waves
Answers
A fiber-optic rod consists of a central strand of material surrounded by an outer coating. the interior portion of the rod has an index of refraction of 1.55. if all rays striking the interior walls of the rod with incident angles greater than 59.5° are subject to total internal reflection, what is the index of refraction of the coating?
Answers
Answer:
the index of refraction of the coating is 1.33
Explanation:
Given the data in the question;
refraction index of interior portion of the rod η\(_{interior\) = 1.55
angle of incidence θ\(_i\) = 59.5°
From Snell's law, we know that;
η\(_{interior\) × sinθ\(_i\) = η\(_{coating\) × sinθ\(_r\)
where η\(_{interior\) is the index of refraction of the rod ( material 1 )
θ\(_i\) is the angle of incidence
η\(_{coating\) is the index of refraction in outer coating ( material 2 )
θ\(_r\) is the angle of refraction
so we substitute our values into the equation;
η\(_{interior\) × sinθ\(_i\) = η\(_{coating\) × sinθ\(_r\)
1.55 × sin( 59.5° ) = η\(_{coating\) × sin( 90° )
1.55 × 0.861629 = η\(_{coating\) × 1
1.3355 = η\(_{coating\) × 1
η\(_{coating\) = 1.33 { 2 decimal places }
Therefore, the index of refraction of the coating is 1.33
a jumbo jet has a mass of 100,000 kg. the thrust for each of its four engines is 50,000 n. what is the jet's acceleration when taking off?
Answers
If a jumbo jet has a mass of 100,000 kg and thrust for each of its four engines is 50,000 n, so the acceleration is 2 m/s².
What is the acceleration of a jet?From the question, we are told that
A jumbo jet has a mass of mj = 100,000 kg
The thrust is given F = 50,000 N
Due to four engines 4 x F
Ft = 4 x 50,000 n = 200000N
Acceleration = Ft/m
Substituting values = 2N/kg
N = kg. m/s²
So, a = 2 kg. m/s²/kg
Therefore, jet's acceleration when taking off is 2 m/s².
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