According to the law of conservation of mass, in a chemical reaction, the mass of the reactant will always be different from the mass of the product.

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.

What type of force holds atoms together in a crystal?