What is the total mechanical energy of a 200 kg roller coaster moving with a velocity of 16 m/s at a height of 18 m above the ground?

Consider three objects. A, B, and C. If A is positively charged, B repels A, and C is attracted by A, what can you say about the charge on B amd C?

A baseball player wants to hit a home run over the wall of a stadium. He hits the ball 0.751 m above the ground with at an angle of 30 degrees above the horizontal and a speed of 37.5 m/s.

This is from educake but For a certain spring, k = 15N/m. A weight is hung from the spring, stretching it from 0.3m to 0.4m. What force did the weight produce? what is the name of the force?

Calculate the pressure in SI unit when a force of 100 dyne acts on area of 0.02cm²

What is the dominant type of rock formed at mid ocean ridges

What must be true about tow objects if heat is flowing between them?

Will a 2 liter bottle of coke have a different density than a one liter bottle of coke?

A positive rod is placed to the left of sphere A, and the spheres are separated

Why do clothes often cling together after tumbling in a clothes dryer?

Can a blackhole be destroyed?