When you lift a book from the ground to your desk, what kind of work do you do, negative or positive? by lifting the book what do you change? Does it gain or lose energy? What kind of Energy?

What is the best energy source of electricity

100m race has same speed and velocity

Scientific question must be

Geoff counts the number of oscillations of a simple pendulum at a location where the acceleration due to gravity is 9.80 m/s2, and finds that it takes 25.0 s for 15 complete cycles. 1) calculate the length of the pendulum.

What tide occurs at first quarter

Sheila lives in the seashore community of Beachview. At 6:00 a. m. one morning, she noticed that the local ocean water was at high tide. At approximately noon that same day, she noticed the water was at low tide.

How many pounds are in 427.06 g? 1 gram = 2.20 * 10-3 lb A. 194,118 lb B. 194.12 lb C. 939 lb D. 0.939 lb

Identify the possible source of earth's magnetic field

A nurse applies a horizontal force of 147 N on a bed that has a mass of 152 kg, The magnitude of the normal force acting on the bed is .967 N 5.00 N 1440 N 1490 N

What do scientists use to look at cells, tissues, and small organisms to see how their biological processes differ in space? vibration flybys airlock microgravity