A student calculates the momentum of a body moving at a relativistic speed by multiplying the rest mass by the velocity. This gives a result for the momentum that is
A. too large.
B. too small.
C. correct.
Answer: B
You might also like to view...
Three cars (car L, car M, and car N) are moving with the same speed and slam on their brakes. The most massive car is car L, and the least massive is car N
If the tires of all three cars have identical coefficients of kinetic friction with the road surface, for which car is the amount of work done by friction in stopping it the greatest? A) The amount of work done by friction is the same for all cars. B) Car L C) Car M D) Car N
Tripling the tension in a guitar string will change its natural frequency by what factor?
a. 3 c. 3–1/2 b. 31/2 d. 1.5
Equilibrium: If the sum of the external torques on an object is zero, then the sum of the external forces on it must also be zero.
A. True B. False
A ping-pong ball covered with a conducting graphite coating has a mass of 5.4 × 10^?3 kg and a charge of 3.8 µC. What electric field directed upward will exactly balance the weight of the ball? (g = 9.8 m/s2)
a. 7.2E+1 N/C b. 1.4E+4 N/C c. 6.3E–8 N/C d. 2.1E+6 N/C e. 6.9E+6 N/C