A 2 kg box slides along a hockey rink and collides with a 20 kg box. Draw the two boxes colliding. With one arrow on each box, show the relative size (length of arrow) and direction of the collision force on each box while they are in contact. Circle the box that experiences the greater acceleration.

The necleus of an atom is made up of what subatomic particles?

Aspring has a relaxed length of 33 cm (0.33 m) and its spring stiffness is 6 n/m. you glue a 76 gram block (0.076 kg) to the top of the spring, and push the block down, compressing the spring so its total length is 15 cm. you make sure the block is at rest, then at time t=0 you quickly move your hand away. the block begins to move upward, because the upward force on the block by the spring is greater than the downward force on the block by the earth. calculate y vs. time for the block during a 0.09-second interval after you release the block, by applying the momentum principle in three steps each of 0.03-second duration.

Without using any reference/comparison to latitude and longitude, define right ascension and declination. how are these used to determine the "address" of a star? again, if the words latitude or longitude appear anywhere in your answer the entire response will be counted wrong.