Current: If 3.0 × 1015 electrons flow through a section of a wire of diameter 2.0 mm in 4.0 s, what is the current in the wire? (e = 1.60 × 10-19 C)
A. 0.12 mA
B. 0.24 mA
C. 7.5 × 107 A
D. 7.5 × 1014 A
Answer: A
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Length is measured in what units in the
British system? a) pounds b) feet c) meters d) kilograms
Jupiter orbits the Sun and follows which laws? Choose the best answer. I. Kepler's first II. Kepler's second III. Kepler's third IV. Newton's first V. Newton's second VI. Newton's third VII. Newton's law of gravitation
a. I, II, III, V, VI b. II, IV, VI, VII c. I, II, III, IV, V, VII d. I, II, IV, V, VI, VII
Velocity: Consider a car that travels between points A and B. The car's average speed can be greater than the magnitude of its average velocity, but the magnitude of its average velocity can never be greater than its average speed.
A. True B. False
On a hard stop, the deceleration of a car is 8.00 m/s2. What force does a 50.0-kg passenger exert on the seat belt in such a stop?
What will be an ideal response?