Which of the following actions will increase the de Broglie wavelength of a speck of dust? (There could be more than one correct choice.)
A) Decrease its momentum.
B) Decrease its speed.
C) Increase its speed.
D) Decrease its mass.
E) Increase its mass.
A, B, D
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Satellite Motion: Satellite A has twice the mass of satellite B, and moves at the same orbital distance from Earth as satellite B. Compare the speeds of the two satellites.
A. The speed of B is twice the speed of A. B. The speed of B is one-half the speed of A. C. The speed of B is one-fourth the speed of A. D. The speed of B is equal to the speed of A. E. The speed of B is four times the speed of A.
If you run a complete loop around an outdoor track (400 m) in 100 s, your average velocity is
A) 0.25 m/s. B) 4.0 m/s. C) 40,000 m/s. D) zero. E) 4.00 km/s.
A 10-g bouncy ball is confined in a 8.3-cm-long box. What is its minimum energy? (h = 6.626 × 10-34 J ? s)
A) 3.2 × 10-46 J B) 9.4 × 10-75 J C) 8.1 × 10-65 J D) 1.3 × 10-20 J
The gravitational force between two objects is proportional to
A) the distance between the two objects. B) the square of the distance between the two objects. C) the product of the masses of the two objects. D) the square of the product of the masses of the two objects. E) none of the above