Explain why most sidewalks have built in cracks every few feet

How do geologists use seismic waves to learn about the Earth's interior?

There is no air in space astronauts in space cannot hear sounds from outside their spacesuits explain this

As an astronaut travels far away from earth, her weight. a. Decrease because gravity decreases. b. Decreases because the mass decreases. c. Increases because gravity increases. d. Remains the same because her mass remains the same.

The diagram below shows a horizontal 12. newton force being applied to two blocks, A and B, initially at rest on a horizontal, frictionless surface. Block A has a mass of 1.0 kilogram and block Bhas a mass of 2.0 kilograms. F = 12N A 1.0kg B 2.

What is net force? A. The fundamental forces B. The unified force C. The gravitational force D. The vector sum of the forces

Ways that charges can be transferred

A cricketer can throw a ball to a maximum horizontal distance of 100m. How much high above the ground can he throw same ball

What is the relationship between the slope of the position graph of an object and its velocity?

Differeniate between thermal energy and heat

The term that describes the time when the sun's are directly over the equator is: