Which of the following is a benefit of an MP3 player? A. The number of songs it holds B. How small it is C. How long the battery lasts D. How it allows the purchaser to listen to music anywhere

What is the weight of a 20kg stone?

A stone is dropped from a height of 7.70 m how fast is it going when it is 5.25 m above the ground

Assuming that the final particles in each case are more stable than the initial particles, which of the statements regarding fission and fusion reactions is true? Both fusion and fission can release or absorb energy.

A thin walled spherical shell is rolling on a surface. What fractions of its total kinetic energy is in the form ofrotational kinetic energy about the center of mass?

A jet stream generally diverges above a low-pressure (warm) center. However, at Earth's surface, air converges at a low-pressure center.

A gate in an irrigation canal is constructed in the form of a trapezoid 2 m wide at the bottom, 38 m wide at the top, and 2 m high. It is placed vertically in the canal so that the water just covers the gate.

A machine with a mechanical advantage of 10 is used to produce an output force of 250 newtons. What input force is applied to this machine

Why do you float in space

How does physical change affect the identity of a substance

A scientist pours grape juice on three identical white shirts He then uses three different cleaning products on the shirts and measures how clean they get what is the independent variable in this experiment