What lies beneath earth crust

Your backpack has a mass of 8 kg. You lift it from the ground to a height of 0.7 m. How much work is done by gravity as you lift the backpack?

Matt forgot to put the fabric softener in the wash. As his socks tumbled in the dryer, they became charged. If a small piece of lint with a charge of + 1.25 E - 19 C is attracted to the socks by a force of 3.

Explaining How Light Bends in Explain how light bends during diffraction

Which of the following statements are true concerning a stable nucleus? Check all that apply ... There is a limit to the size of a stable nucleus because of the short range of the strong nuclear force.

A 1.79 m long uniform rod with a mass of 2.03 kg is allowed to rotate. By pushing perpendicularly on the edge of the rod, a student produces an angular acceleration of 12.9 rad/s2.

5. If you push a chair across the floor at a constant velocity, how does the force of friction compare with the force you exert? Explain.

if a parachute and a stone is dropped from a certain height at once on the Moon which will reach the surface of moon

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. Her friend, a hockey player, then shoots a hockey puck at each shoe.

Show your conversions on the right 8500 mm 2. 250 mg 3. 500000 g 4. 201 = 5. 0.5 Km 6. 350 mm

As one goes from left to right in a period, which of the following is true? A. The number of protons decreases. B. The number of valence electrons increases. C. both A and B D. none of the above