What makes a grenade explode?

What is the kinetic energy of a 2,000 kg boat moving at 5 m/sec?

If i measure the parallax of a star to be 0.125 arc seconds, what is its distance in parsecs?

Using 15 percent as machine energy efficiency, what is the actual work output if the total work input is 7500 kilojoules ? A. 500 kilojoules B. 750 kilojoules C. 1,125 kilojoules D. 7,500 kilojoules

A constant net torque is exerted on an object. Which of the following quantities for the object cannot be constant? (Select all that apply.) A. kinetic energy B. angular velocity C. angular acceleration D. moment of inertia E. angular position

Coal is lifted out of a mine a vertical distance of 50 m by an engine that supplies 500 W to a conveyer belt. How much coal per minute can be brought to the surface? Ignore the effects of friction.

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.