Which of the following best describes gravity?
A Gravity can be an attractive or a repellant force.
O
B. Gravity is neither an attractive nor a repellant force
O
C. Gravity is always an attractive force.
O
D. Gravity is always a repellant force

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong

Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely

Hydrogen and helium are both members of?