What is the definition of physical activity?

The molecules in a gas are often modeled as small balls. if the molecules all have the same mass, infer what happens if 2 molecules traveling at the same speed collide head on.

Is our cosmic horizon the same as that of being in another galaxy?

A small plastic sphere with a charge of - 7.5 nC is near another small plastic sphere with a charge of + 11 nC. If the force between the spheres has a magnitude of 8.8*104 N, what is the distance between the spheres? What kind of force is this?

When you raise the temperature of air, the molecules move farther apart from each other. This lowers the density of the warm air. What will happen to this warm air? (In an ideal gas, increasing the temperature of the gas also increases its volume.)

You and a friend are jumping on a trampoline. Why does Earth, which is rapidly orbiting around the sun, not move under your feet when you jump? A.

What is electromagnetism?

How much voltage is required to run 0.054 A of current through a 15 2 resistor? Use AV = IR. O A. 0.81 V O B. 1.2 V O c. 2.8x10²v O D. 3.6 x 10-3 v

Which one of the following crystal structures has the fewest slip directions and therefore the metals with this structure are generally more difficult to deform at room temperature? a. BCC b. FCC c. HCP d. BCT

What does equation of trajectory means? what do i get from tat equation? 0_o?

What is the definition of the power transmitted by a wave? A. Power is the amplitude of a wave multiplied by its speed. B. Power is the rate at which the wave transmits matter through space. C.