A 150 kg cart is being accelerated by a tractor at a rate of 5 m/s². How much force is the tractor putting on the cart?

Jack tries to place a magnet on the door of his refrigerator. He observes that the magnets don't stick. He guesses that the door of the refrigerator is made of non magnetic substance.

On another planet, a morble is released from rest at the top of a high cliff. It falls 4.00 m in the first 1 s of its motion. Through what additional distance does it fall in the next 1 s? (a) 4.00 m (b) 8.00 m (c) 12.0 m (d) 16.0 m (e) 20.0 m

A box is placed on a flat surface. Jane lifts one end of the surface, making an angle with the floor. As she increases the angle that the surface makes with the floor, the box eventually begins to slide down because ...

Current X is 2.5 A and runs for 39 seconds. Current Y is 3.8 A and runs for 24 seconds. Which current delivered more charge, and how much more charge did it deliver?

What is tiny holes on the surface of a plant?

How does the current in a circuit change if the resistance is doubled?

Three particles are placed in the xy-plane. A 30 g particle is located at (3 m, 4 m), and a 40 g particle is located at (2 m, 2 m).

Your tennis ball rolls off a 0.91m tall table and hits 0.25m out from the table. What is it's time in the air? What is its vertical velocity before hitting the ground (show work)

If two forces of equal magnitude act on an object that is hinged at a pivot, the force acting farther from the pivot must produce the greater torque about the pivot.

How is conductivity related to resistance?