If the kinetic energy of a particle is 3.00 times its rest energy, the speed of the particle is closest to which of the following values?
A) 0.984c B) 0.950c C) 0.968c D) 0.990c E) 0.976c
C
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Object 1 has twice the mass of Object 2 . Each of the objects has the same magnitude of momentum. Which of the following statements is true?
a. Both objects can have the same kinetic energy. b. One object has 0.707 times the kinetic energy of the other. c. One object has twice the kinetic energy of the other. d. One object has 4 times the kinetic energy of the other.
Water is being sprayed from a nozzle at the end of a garden hose of diameter 2.0 cm. If the nozzle has an opening of diameter 0.50 cm, and if the water leaves the nozzle at a speed of 15 m/s, what is the speed of the water inside the hose?
a. 0.63 m/s c. 2.5 m/s b. 0.94 m/s d. also 10 m/s
Spectroscopic parallax is more accurate than trigonometric parallax for nearby stars
Indicate whether the statement is true or false
A waiter in a restaurant fills a pitcher full of water and ice so that water would spill out if any more were added. As the ice starts to melt
a. the water level in the pitcher falls. b. the water level in the pitcher remains the same. c. water starts to flow out the spout of the pitcher. d. the pressure on the bottom of the pitcher decreases. e. the pressure on the bottom of the pitcher increases.