Jim pushes hard on a rock that weighs 500 pounds. He pushes with a force of 50 pounds, but the rock doesn't move. How much work did Jim do?

Which constellation is commonly referred to as the Great Bear? A. Polaris B. Ursa Major C. Ursa Minor D. Canis Major

Electric current can best be induced in a wire by a. stretching the wire. b. moving a magnet up and down near the wire. c. setting the wire near a magnet. d. rotating the wire. E. none of the above

A soccer ball is at rest. A kicker kicks the ball and it travels a distance of 80 meters in 12 seconds. What is the ball's acceleration?

The graph above plots gravitational force versus distance for two asteroids of equal mass (10 billion kg). When the distance between the asteroids is 1,000 km, the gravitational force between them is about 6,700 N.

The ___ belt contains perhaps ten of thousands of objects orbiting within about 100 AU of the sun

For each case, identify the force (including its direction) that causes the acceleration. (a) A sprinter at the very start of the race.

Select the effects of radiation below that are stochastic: associated with short-term, high-level exposure associated with long-term, low-level exposure include cancer and other DNA mutation include burns and radiation sickness

On the modern periodic table, elements are ordered according to what?

Jack drops a stone from rest off of the top of a bridge that is 24.4 m above the ground. After the stone falls 6.6 m, Jill throws a second stone straight down. Both rocks hit the water at the exact same time.

How is Electric current able to flow?