Explain how waste energy is produced when an inefficient lightbulb converts electrical energy into radiant energy.

The safe load, L, of a wooden beam supported at both ends varies jointly as the width, w, the square of the depth, d, and inversely as the length, l. A wooden beam 3in. wide, 6in. deep, and 11ft long holds up 1213lb. What load would a beam 6in.

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

3. Which part of the back seat of a car-the left side, the right side, or the middle-do you think is the safest place for a child safety seat? Explain.

The sun is more massive than Earth, so A. the sun has less gravity than Earth. B. the sun has more gravity on Earth. C. the Earth has more gravity than the Sun. D. they both have the same amount of Gravity.

A car goes from 0 to 100 km/hr in 10 seconds. what is it's acceleration

How long does it take for light to travel from the sun to earth?

Two very small spheres are initially neutral and separated by a distance of 0.30 m. Suppose that 2.50 1013 electrons are removed from one sphere and placed on the other. (a) What is the magnitude of the electrostatic force that acts on each sphere?

Why is it important to balance a chemical equation? A. It is not important to balance a chemical equal B. To make sure you have the correct products C. To make sure you have the correct reactants D. To obey the law of conservation of mass

The presence of icicles hanging off the eaves of a wood-framed structure is most likely due to: heavy snow followed by a thaw. improper insulation in wall cavities. use of a poor-quality roof sheathing material. lack of proper roof ventilation.

Both gravitational potential energy and kinetic energy depend on