Samantha pushes a 60-N crate up a ramp 20.0 m in length and inclined at 10° with the horizontal. What potential energy change does the crate experience?
a. 1200 J
c. 600 J
b. 210 J
d. 300 J
B
You might also like to view...
In nuclear fusion,
a. light nuclei combine to form a heavier nucleus. b. a large nucleus splits into two smaller ones. c. an initial reaction triggers a chain reaction. d. protons are converted into neutrons and energy.
Two point charges of values +3.4 mC and +6.6 mC are separated by 0.20 m. What is the electrical potential at the point midway between the two charges? (ke = 8.99 × 10^9 N×m2/C2)
a. +1.8 × 10^6 V c. +0.90 × 10^6 V b. -0.90 × 10^6 V d. +3.6 × 10^6 V
Consider the star to which the arrow points. How is it currently generating energy?
A) by core hydrogen fusion B) by hydrogen shell burning around an inert helium core C) by gravitational contraction D) by core helium fusion combined with hydrogen shell burning E) by both hydrogen and helium shell burning around an inert carbon core
Venus and Mercury both have magnetic fields similar to Earth's
Indicate whether the statement is true or false