Newton's second law of motion indicates that, as an object gets heavier, it
requires a force to give it the same acceleration.
A)Smaller
B)Positive
C)Negative
D)Larger

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign

Athird point charge q3 is now positioned halfway between q1 and q2. the net force on q2 now has a magnitude of f2,net = 5.861 n and points away from q1 and q3. what is the value (sign and magnitude) of the charge q3?