1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AysviL [449]
3 years ago
15

Two 0.50-kg carts are pushed toward each other from starting positions at either end of a 6.0-mlow-friction track. Each cart is

pushed with a force of 5.0 N , and that force is exerted for a distance of 1.0 m.
Part A

What is the work done on the two-cart system?

Part B

What is the change in kinetic energy of the system?

Part C

What is the kinetic energy of the center of mass of the system?
Physics
1 answer:
Rzqust [24]3 years ago
3 0

Answer:

A) W=10J

B) \Delta K=10J

C) K_{CM}=0J

Explanation:

Since the problem is in one dimension, we can consider that one cart (1) is pushed in the positive direction while the other (2) is pushed in the negative one, so the work done on the system will be:

W=F_1.d_1+F_2.d_2=(5N)(1m)+(-5N)(-1m)=10J

Using the work-energy theorem W_{Net}=\Delta K, and since all work done on the system is the one calculated before, we have \Delta K=10J

The net force on the system is F_{Net}=0N, so there is no acceleration of the center of mass and it's kinetic energy is the initial one, K_{CM}=0J.

You might be interested in
Which best explains how fiber-optic technology has improved communication?
Gelneren [198K]

Answer:

B. It has allowed for faster transmission of Internet signals.

Explanation:

i took the test on engenuity

8 0
3 years ago
Read 2 more answers
URGENT! 50pts! Help with rotational speed questions please?
EastWind [94]
1). If you want the wheel to turn as one solid piece, then all parts of it must have the same RATE of rotation. If one part was going 2 RPM and another part was going 3 RPM, then there's no way both parts could stay hooked together. Their SPEED depends on their distance from the center, but they all have to make the same RPM. 2). The CENTRIPETAL acceleration of anything that's rotating is. m-v-squared/ R. The object's speed depends on its radius, and it's acceleration varies directly with the square of the speed. So if you move in to half the radius, the acceleration becomes 1/4 of the original value.
7 0
3 years ago
The planet Jupiter orbits the Sun at a nearly constant speed. Which of the following statements are true?
RoseWind [281]

Answer:

a. There is a force on Jupiter toward the center of the orbit.

d. Jupiter is accelerating toward the center of the orbit.

Explanation:

Let us look at each of the choices one by one:

a. There is a force on Jupiter toward the center of the orbit.

True. The sun being at the center of Jupiter's orbit, pulls the planet towards it (providing the centripetal force), therefore, there exists a force on Jupiter toward the center of the orbit.

b. There is a force on Jupiter pulling it out from the center of the orbit.

Nope. The centripetal force due to gravity acts towards the center of the orbit.  

c. There is a force on Jupiter in the direction of its motion.

Nope. There exists only the centripetal force acting towards the center of the orbit,

d. Jupiter is accelerating toward the center of the orbit.

Yes. Because of the centripetal force gravity provides, Jupiter is accelerating towards the center of the orbit, but it does not fall in because it has velocity perpendicular to the direction of its acceleration.

6 0
3 years ago
A basketball comes down after it is shot because of __________
Vlada [557]

Answer:

gravity, friction, opposite, friction. hope that helps :)

Explanation:

7 0
3 years ago
Read 2 more answers
How does newton's second law describe the motion of an object?
vodomira [7]

Answer:

Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • You are standing 10 meters from a light source. then, you back away from the light source until you are 20 meters away from it.
    9·2 answers
  • One student did an experiment on the rock cycle.
    15·1 answer
  • Which has a greater effect on potential energy: mass or height?
    6·1 answer
  • Inertia ____.
    6·1 answer
  • The summer season is closely linked to which of the following?
    5·2 answers
  • A sample of glass has a mass of 15 g and takes up 14.3 cm 3 of space. What is the density?
    13·1 answer
  • Which of these is an example of electromagnetic induction? A current passing through a resistor uses power IR2. A current throug
    11·1 answer
  • You build a grandfather clock, whose timing is based on a pendulum. You measure its period to be 2s on Earth. You then travel wi
    9·1 answer
  • When the sun warms the sidewalk on a hot sunny day, what type of energy conversion occurs?
    13·2 answers
  • A proton is projected in the positive x direction into a region of a uniform electric field →E =(-6.00 × 10⁵) i^ N/C at t=0 . Th
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!