What is the mechanical adventure of a machine with an input force of 63 pounds and an output force of 275 pounds?

If you can see the conductor in a lamp should you use it or not?

If 0.600 mol of a nonvolatile nonelectrolyte are dissolved in 3.70 mol of water, what is the vapor pressure ph2o of the resulting solution? the vapor pressure of pure water is 23.8 torr at 25? c.

What is an example of radiation? check all that apply

1) Which of the following explains why a bicycle uses a gear? A.) The gear increases the effort force needed. B.) The gear increases resistance force. C.) The gear decreases effort force. D.) The gear decreases resistance force.

A constant 10-N horizontal force is applied to a 20-kg cart at rest on a level floor. If friction is negligible, what is the speed of the cart when it has been pushed 8.0 m?

Which type of wave experiences a change in speed when entering a new medium? a) only sound waves b) both sound and light waves c) only light waves d) neither sound or light waves

Three basic classes of collisions include all but which of the following?

How does the use of biomass energy to create electricity harm the environment

Which physical property of iron made it popular for use in weapons? 1. Magnetism 2. Luster 3. Malleability 4. Ductility

a 2 kg rock is dropped from the top of a 30 m High building calculate the ball at the time that it strikes the ground