Physics, 16.06.2021 06:10 jordivivar74

Block X of mass mo is at rest at the top of a ramp, and the block's center of mass is at a height H above the ground. Block X is then released from rest, and it slides down the ramp and collides with block Y of mass mo, which is initially at rest and has its center of mass at a
height h above the ground. At the moment before the collision, block X has a speed of vo. After the collision, block Y travels such that it
lands at point P.
Consider the block X-block Y system from the moment in time that block X is released from rest to the moment immediately after block X
collides with block Y. Which of the following claims best describes the system?
А
Because the total momentum of the system does not remain constant, the system is open.
B
Because the total kinetic energy of the system does not remain constant, the system is open.
с
Because the total momentum of the system remains constant, the system is closed.
D
Because the total kinetic energy of the system remains constant, the system is closed.

Answers: 2

Show answers

Another question on Physics

Physics, 21.06.2019 21:50

What is the length x of the side of the triangle below? (hint: use the cosine function)

Answers: 1

Answer

Physics, 22.06.2019 04:50

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

Answers: 1

Answer

Physics, 22.06.2019 05:20

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you

Answers: 3

Answer

Physics, 22.06.2019 15:00

Astudent throws a water balloon with speed v0 from a height h = 1.76 m at an angle θ = 21° above the horizontal toward a target on the ground. the target is located a horizontal distance d = 9.5 m from the student’s feet. assume that the balloon moves without air resistance. use a cartesian coordinate system with the origin at the balloon's initial position. (a) what is the position vector, rtarge t, that originates from the balloon's original position and terminates at the target? put this in terms of h and d, and represent it as a vector using i and j. (b) in terms of the variables in the problem, determine the time, t, after the launch it takes the balloon to reach the target. your answer should not include h. (c) create an expression for the balloon's vertical position as a function of time, y(t), in terms of t, vo, g, and θ. (d) determine the magnitude of the balloon's initial velocity, v0, in meters per second, by eliminating t from the previous two expressions.

Answers: 3

Answer

You know the right answer?

Block X of mass mo is at rest at the top of a ramp, and the block's center of mass is at a height H...

Questions