A proton's rest mass is 1.67 × 10^-27 kg. Calculate its kinetic energy when it is accelerated to a speed of 0.80 c
a. 1.0 × 10^-10 J
b. 1.5 × 10^-10 J
c. -2.0 × 10^-10 J
d. 2.5 × 10^-10 J
e. 7.5 × 10^-10 J
A
You might also like to view...
The least common type of star is a(n) ____
a. white dwarf b. lower main sequence c. upper main sequence d. giant e. supergiant
A 50.0-kg box is being pushed along a horizontal surface by a force of 250 N directed 28.0° below the horizontal. The coefficient of kinetic friction between the box and the surface is 0.300. What is the acceleration of the box?
A) 0.769 m/s2 B) 1.77 m/s2 C) 3.16 m/s2 D) 6.31 m/s2 E) 8.53 m/s2
An initially installed flywheel can store 106 J of kinetic energy when rotating at 300 rad/s. It is replaced by another flywheel of the same size but made of a stronger material. If its mass is the same as that of the original, and it is now capable of achieving a rotational speed of 425 rad/s, what maximum energy can be stored?
a. 2.01E+6 J b. 1.66E+3 J c. 1.73E+5 J d. 1.00E+6 J
Why do you hear thunder a substantial time after seeing a lightning flash?
a. The sound is produced later than the light is. b. Your eyes respond more quickly than your ears. c. The flash and thunder really are simultaneous, but the thunder lasts longer than the flash. d. Sound travels much more slowly than light.