Particle A has twice the charge of nearby particle B. Compared to the force on Particle A, the force on Particle B is

A) half as much.
B) the same.
C) twice as much.
D) four times as much.
E) none of the above


Answer: B

Physics & Space Science

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Choose the answer that fills in the three blanks in the correct order: Earth rotates once each ________, Earth orbits the Sun once each ________, and the Moon orbits Earth about once each ________.

A) day, year, month B) day, year, week C) year, day, month D) hour, day, year E) hour, day, month

Physics & Space Science

A ball thrown vertically from ground level is caught 3.0 s later when it is at its highest point by a person on a balcony which is 14 m above the ground. Determine the initial speed of the ball

a. 19 m/s b. 4.7 m/s c. 10 m/s d. 34 m/s e. 17 m/s

Physics & Space Science

A circular coil of copper wire is lying flat on a horizontal table. A bar magnet is held with its south pole downward, vertically above the center of the coil. The magnet is released from rest and falls toward the coil

As viewed from above, you can say that, as it falls, the magnet induces A) counterclockwise current in the loop. B) clockwise current in the loop. C) no current in the loop. D) an emf but no electric current in the loop. E) Not enough information is provided.

Physics & Space Science

A engine manufacturer makes the claim that the engine they have developed will, on each cycle, take 100 J of heat out of boiling water at 100°C, do mechanical work of 80 J, and exhaust 20 J of heat at 10°C

What, if anything, is wrong with this claim? A) The heat exhausted must always be greater than the work done according to the second law of thermodynamics. B) This engine violates the first law of thermodynamics because 100 J + 20 J ? 80 J C) An engine would operate by taking in heat at the lower temperature and exhausting heat at the higher temperature. D) The efficiency of this engine is greater than the ideal Carnot cycle efficiency. E) There is nothing wrong with this claim because 100 J = 20 J + 80 J.

Physics & Space Science