Suppose a 0.30-kg mass on a spring-loaded gun that has been compressed 0.20 m has elastic potential energy of 1.0 J. How high above the spring's equilibrium point can the gun fire the mass if the gun is fired straight up?
a. 0.10 m
c. 0.24 m
b. 0.34 m
d. 0.14 m
D
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The star Arcturus shows a large proper motion, almost perpendicular to the galactic plane. What Population might we assume it belongs to, and why?
What will be an ideal response?
A golf ball is thrown at and bounces backward from a massive bowling ball that is initially at rest. After the collision, compared to the golf ball, the bowling ball has more
A) momentum, but less kinetic energy. B) kinetic energy, but less momentum. C) momentum and more kinetic energy. D) need more information
Betelgeuse has an MV = –5 and 1000 times the radius of the Sun. Barnard's Star has an MV = 13.2 and 100 times smaller than the Sun. Therefore, we can determine that the stars have the same temperature
a. True b. False Indicate whether the statement is true or false
When a particle and antiparticle meet, they are said to annihilate each other. What does this mean?
a. They explode into tiny fragments. b. They are destroyed, and turned into an equivalent amount of energy. c. They merge and simply disappear. d. none of the above