The kinetic energy of a particle is 3 times its rest energy. What is the speed of the particle?
A) 0.950c
B) 0.968c
C) 0.976c
D) 0.984c
E) 0.990c
B
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The major product of the fusion of 4 protons in the Sun's core is a(n) ________ nucleus
Fill in the blank(s) with correct word
A 3.0-kg block slides on a frictionless 20° inclined plane. A force of 16 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block?
a. 2.0 m/s2 down the incline b. 5.3 m/s2 up the incline c. 2.0 m/s2 up the incline d. 3.9 m/s2 down the incline e. 3.9 m/s2 up the incline
A girl throws a stone straight down from a bridge. The stone leaves her hand with speed of 8.00 m/s at a height of 12 m above the water below. How much time does it take for the stone to hit the water?
A) 2.58 s B) 0.95 s C) 1.8 s D) 0.41 s E) 17.3 s
The chief hazard of radiation damage to living cells is
A) due to heating. B) due to ionization. C) due to the creation of chemical impurities. D) the creation of new isotopes within the body. E) the creation of radioactive material within the body.