Car A (mass = 1000 kg) moves to the right along a level, straight road at a speed of 6.0 m/s. It collides directly with car B (mass = 200 kg) in a completely inelastic collision
What is the momentum after the collision if car B was initially at rest?
A) 2.0 KN-s to the right
B) 6.0 KN-s to the right
C) 8.0 KN-s to the left
D) 10. KN-s to the right
E) zero
B
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A transverse periodic wave is represented by the equation y(z, t) = 2.0 cm sin(1,200 rad/s t - 20.0
z). Another transverse wave is represented by the equation y(z, t) = 2.0cm sin(1,200 rad/s t + 20.0
z). What is the equation that represents the superposition of the two waves?
A. y(z, t) = 4.0 cm sin(1,200 rad/s t - 20.0 
z)
B. y(x, t) = 4.0 cm sin(1,200 rad/s t) cos(20.0x)
C. y(x, t) = +4.0 cm cos(1,200 rad/s) sin(20.0
x)
D. y(x, t) = +4.0 cm cos(1,200 rad/s) + (20.0x)
Explain why it is so difficult to see planets around other stars
What will be an ideal response?
Winter and summer differ in length on Mars because of its elliptical orbit
Indicate whether the statement is true or false
Electromagnetic waves do not require a medium to be transmitted
Indicate whether the statement is true or false