Imagine a small magnet with its north pole vertically upward passing near the south pole of an external magnet that is above the small magnet. In what direction does the net force acting on the magnet point?
A. Upward.
B. Downward.
C. There is zero net force.
D. None of the above (explain).
A. Upward.
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A particle moving along the x axis has a position given by x = (24t – 2.0t3) m, where t is measured in s. What is the magnitude of the acceleration of the particle at the instant when its velocity is zero?
a. 24 m/s2 b. zero c. 12 m/s2 d. 48 m/s2 e. 36 m/s2
What type of forces result in reverse faulting?
a. Expansive b. Compressional c. Parallel d. Shear
During a total lunar eclipse, which of the following are true? I. The photosphere of the sun is obscured by the moon. II. The moon is in Earth's umbra. III. The moon is new. IV. The moon is full
a. I, III b. II, IV c. I, II, III d. II, III e. I, II, III, IV
The center of mass of a system of particles (or objects) with total mass M moves like a single particle of mass M acted upon by the same net external force
Indicate whether the statement is true or false