An 80-g particle moving with an initial speed of 50 m/s in the positive x direction strikes and sticks to a 60-g particle moving 50 m/s in the positive y direction. How much kinetic energy is lost in this collision?
a. 96 J
b. 89 J
c. 175 J
d. 86 J
e. 110 J
D
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When you look into a pool of water, the depth looks less than it actually is because of __________
Fill in the blank(s) with correct word
A book is resting on a table. How many forces would be in the free-body diagram of the book?
a. one b. two of the same type c. two of different types d. three or more of the same type e. three or more of at least two different types
What would be the greatest effect of the finite size of molecules on the ideal gas law?
A) At low densities, the pressure would be less than that predicted by the ideal gas law. B) At high densities, the pressure would be less than that predicted by the ideal gas law. C) At high densities, the pressure would be greater than that predicted by the ideal gas law. D) At low densities, the pressure would be higher than that predicted by the ideal gas law. E) There is no effect.
To determine the mass of a car, a student (with a friend at the wheel) pushes the car holding a bathroom scale between himself and the car and carefully maintains a constant reading of 400 N on the scale while the car accelerates on level ground
At the conclusion of the experiment his friend reports that the car accelerated from rest to 14.0 km/hr in 12.0 s. What was the mass of the car? A) 343 kg B) 1230 kg C) 2460 kg D) 3360 kg E) 3430 kg