What determines the voltage of a light bulb?

Which number should be placed in the blank to make the equation balanced Xe+___F2=XeF2?

A 500g ball moves in a vertical circle on a 102cm long string. If the speed at the top is 4.0m/s, then the speed at the bottom will be 7.5m/s.

A person can jump 1.5m on the earth. How high could the person jump on a planet having the twice the mass of the earth and twice the radius of the earth?

Only one force acts on an object, can the object have zero acceleration? can the object have zero velocity? explain.

A heat engine has a hot reservoir of 680°C and a cold reservoir of 220°C. What is the efficiency of the engine?

What are the equations for acceleration and net force?

Which is a diatomic molecule? A. Ar B. CO C. CO2 D. NaCl

A sample of N-type silicon is at the room temperature. When an electric field with a strength of 1000V / cm is applied to the sample, the hole velocity is measured and found to be 2 * 105 cm/sec. a.

Which of the following is a vector quantity? A. 83 ounces of liquid B. 55 km/hr in a truck C. 15 seconds of travel D. 10 m/s down

Which of the following best describes the ultraviolet catastrophe of blackbody radiation? A. As energy is added to an object acting as a blackbody radiator, its emissions move to the ultraviolet part of the electromagnetic spectrum. B.