Does the number of particles change as the substance changes its state

A reptiles body temperature gets too low, what does he need to do

How long does a car battery last with lights

A 8kg ball is dropped from a height of 24 m. What is it's velocity when it hits the ground?

How does friction act as an unbalanced force for objects in motion?

Which property of gold is a physical property? A. ability to bond B. reactivity C. ability to rust D. malleability

When a surface vibrates, air is forced to move, creating a sound wave. What kind of force is exerted by the moving surface on the air?

An 800-N billboard worker stands on a 4.0-m scaffold supported by vertical ropes at each end. If the scaffold weighs 500 N and the worker stands 1.0 m from one end, what is the tension in the rope nearest the worker?

When would you use a compound microscope?

What does a Battery and a human have in common?

Why is it better to search new a cliff for a fossil then near a volcano?