Author Question: Two nonparallel vectors determine a plane. Relative to the plane determined by the position vector ... (Read 128 times)

Sufayan.ah · **on:** Jul 29, 2018

Two nonparallel vectors determine a plane. Relative to the plane determined by the position vector and velocity vector of a particle, in which direction is the angular momentum vector about the origin?

A)

in the plane, but perpendicular to the velocity vector
B)

in a direction dependent on the magnitudes of the velocity and position vectors
C)

perpendicular to the plane
D)

in the plane, but perpendicular to both the position vector and the velocity vector
E)

in the plane, but perpendicular to the position vector

Question 2

A wave pulse traveling to the right along a thin cord reaches a discontinuity where the rope becomes thinner and lighter. What is the orientation of the reflected and transmitted pulses?

A)

both are right side up
B)

the reflected pulse returns right side up while the transmitted pulse is inverted
C)

the reflected pulse returns inverted while the transmitted pulse is right side up
D)

both are inverted
E)

It is impossible to predict.