Why do atoms move at different speeds depending on wether they are liquids or solids

Objects with less density than water will?

Velocity is the change in? over the change in time

A particle is traveling in the positive direction along an x axis, at a constant 5 m/s. Which of the following describes the particle's acceleration? 1 - zero 2 - negative 3-positive

Describe the medium that electromagnetic waves use to travel

What is the mid-atlantic ridge? how many miles does it stretch?

A light wave travels through air in equals 1.00 at an angle of 35 degrees what angle does it have when it passes from the air into the glass n equals 1.50

I have four questions. : Consider a 2-kg bowling ball sits on top of a building that is 40 meters tall. It falls to the ground.

A 0.2 kg plastic cart and a 20 kg lead cart can both roll without friction on a horizontal surface. equal forces are used to push both carts forward for a distance of 1 m, starting from rest.

Infer the effect of deforestation on the carrying capacity of the Amazon rainforest.

What best describes the angle between a changing electric field and the electromagnetic wave produced by it? always equal to a right angle always less than a right angle varies from parallel to perpendicular varies from perpendicular to parallel