How much work is done on a 13 N object that is being lifted onto a shelf 2 meters high?

What is hidden during a lunar eclipse? isn't the moon hidden?

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.

Which model displays the change in a gas when the temperature of the gaseous system decreases?