The law of blank of matter and energy states that matter cannot be made nor destroyed but can only be changed from one form to another

Object A has a mass of 100 grams. Object B has a mass of 150 grams. They are both traveling at the same velocity. What can you conclude?

Which of the following situations would result in angular clasts? a) transport of the clasts over long distance b) working of clasts by waves on a beach c) steep slopes in a mountain d) dunes formed by wind

Mercury has a mass of 3.30 1023 kg and a radius of 2.44 106 m. (a) What is the acceleration due to gravity on Mercury?

In order to slide a heavy cabinet across the floor at constant speed, you exert a horizontal force of 600 N. Is the force of friction between the cabinet and the floor greater than, less than, or equal to 600 N? Explain your answer.

A horizontal force of 25 N is required to push a wagon across a sidewalk at a constant speed. a. What is the net (unbalanced) force acting on the wagon? b. What is the value of the force of friction acting on the wagon? c.

Why is it important for engineers to design bumper cars safely

What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75 m wide and 9.00 m below the top of the cliff?

Which statement describes how light behaves when it strikes a translucent material? A. Light is scattered. B. Light is transmitted. C. Light is reflected. D. Light is absorbed.

A certain gas is present in a 15.0 l cylinder at 2.0 atm pressure. if the pressure is increased to 4.0 atm the volume of the gas decreases to 7.5 l.

Choose all the answers that apply. To qualify as a planet, a celestial object must: have an irregular shape revolve around the sun orbit in a clear area have enough gravity to have a spherical shape have a satellite