Which statement explains why the moon’s gravity is able to create high and low tides? a. the moon is revolving more quickly than the earth is rotating. b. the moon is revolving more slowly than the earth is rotating. c. some parts of the earth never face directly on the sun and moon. d. the moon is revolving at the same speed that the earth is rotating.

The two required components for a generator are

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .