Why evaporation are called surface phenomenon?

When an object is heated it contracts. A. True B. False

What is the difference between revolution and rotation

A block of mass 2.95 kg is placed against a horizontal spring of constant k = 820 N/m and pushed so the spring compresses by 0.0800 m. (a) What is the spring potential energy of the block-spring system? 2.624 Correct: Your answer is correct.

Joshua skates in a straight line at a constant speed for 1 min, then begins going in circles at the same rate of speed, and finally begins to increase speed. When is he accelerating? Explain your answer

A rock weighing 98 newtons is pushed off the edge of a bridge 50 meters above the ground. What was the potential energy of the rock before it began to fall?

What does it mean when a plane is perpendicular to the x-axis?

If the weight of an object that is submerged in a fluid is 10 N and the buoyant force on it is 20 N, what will happen to the object?|

A switch in an electric circuit controls the flow of electrons in the circuit. True O False

What are three common forms of work in science

A boat travels north across a river at a velocity of 22 meters/second with respect to the water. The river's velocity is 2.2 meters/second to the east. What is the resultant velocity of the boat, as measured from the land?