A bullet is fired horizontally with an initial velocity of 300 m/s from a 20-m high tower. If air resistance is negligible, the bullet hits downrange about
A) 200 m.
B) 300 m.
C) 400 m.
D) 500 m.
E) 600 m.
Answer: E
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A uniform linear charge of 2.0 nC/m is distributed along the x axis from x = 0 to x = 3 m. Which of the following integrals is correct for the y component of the electric field at y = 4 m on the y axis?
A.
B.
C.
D.
E.
An object is hung using a metal spring. If now a current is passed through the spring, what will happen to this system?
A) The spring will begin to swing like a pendulum. B) The spring will extend, lowering the weight. C) The spring will contract, raising the weight. D) The weight will not move. E) None of these are true.
One ray that is useful in locating the image formed by a convex mirror is the ray that is incident on the mirror in a path directed toward the focal point. This ray is reflected
A. through the center of curvature. B. directly back along its incident path. C. on a path tangent to the mirror. D. on a path parallel to the mirror axis.
A block is on a frictionless horizontal table, on earth. This block accelerates at 1.9 m/ when a horizontal force is applied to it. The block and table are then set up on the moon where the acceleration due to gravity is 1.62 m/s2
What is the weight of the block on the moon? A) 77 N B) 67 N C) 58 N D) 48 N E) 39 N