Which statement correctly describes how a bar magnet should be placed on a globe to correctly align with earth's magnetic field?
a. place the magnet horizontally on the equator, with the south end facing south america.
b. place the magnet vertically on the equator, with the south end facing the the north pole.
c. place the magnet vertically on the equator, with the north end facing the north pole.
d. place the magnet horizontally on the equator, with the north end facing south america.

The base of a 50-meter tower is at the origin; the base of a 50-meter tree is at (0, 50, 0). the ground is flat and the z-axis points upward. the following parametric equations describe the motion of six projectiles each launched at time t = 0 in seconds. (i) r (t) = (50 + t2)k (ii) r (t) = 2t2 j + 2t2k (iii) r (t) = 50 i + 50 j + (50 − t2)k (iv) r (t) = 2t j + (50 − t2)k (v) r (t) = (50 − 2t) i + 2t j + (50 − t)k (vi) r (t) = t i + t j + tk (a) which projectile is launched from the top of the tower and goes downward? at time t = , the projectile hits the ground at point (x, y, z) = . (b) which projectile hits the top of the tree?

Which of the following best describes the circuit shown below?

Which of the following is another term for a planned economy