A trunk is dragged 3 m across an attic floor by a force of 2 N. The work done on the trunk is joules. Assuming the floor to be level, the gain in potential energy is joules.

True or false: passing is prohibited when the view is obstructed or when approaching within 100 feet of any bridge, viaduct, or tunnel.

How is work defined in physics

Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the melting of ice, and explain your predictions. How does temperature affect the spontaneity of this process?

1. Suppose you had come along before Mendeleev and were tasked with organizing the elements into a pattern others could understand. Describe your arrangement and how you would determine where elements would be placed.

Explain good experimental procedure

A small rock remains at rest in outer space while an astronaut pushes horizontally on it with a force of 20 N. Which of the following must be true? A. There is another horizontal force acting on the rock. B.

If an igneous rock has very large crystals of minerals that you can see when looking at it, which type of igneous rock is it

You have a 60-foot roll of fencing and a large field. You want to make two paddocks by continuing the fencing down the middle of a rectangular enclosure. What are the dimensions of the largest such enclosure you can make?

Crystallization is a separation technique used to produce rock candy from a sugar solution. true or false

A car traveling in a straight line has a velocity of 3.79 m/s at some instant. After 5.4 s, its velocity is 11.9 m/s. What is its average acceleration in this time interval? Answer in units of m/s 2