What word is used to describe an object that reflects 100% of the incident light?

A 0.6-m3 gas tank holds 5 moles of nitrogen gas (N2), at a temperature of 320 K. The atomic mass of nitrogen is 14 g/mol, the molecular radius is 3.0 * 10-10 m, and the Boltzmann constant is 1.38 * 10-23 J/K.

A series circuit has two 5.0 on resistors and a power source of 9.0 volts. How will the current be affected and what will be another resistor (with a resistance of 7.5 ohms) is added to the circuit?

Radiation makes it impossible to stand close to a hot lava flow. Calculate the rate of heat transfer by radiation, in kW, from 1.02 m2 of 1000ºC fresh lava into 25.3ºC surroundings, assuming lava'semissivity is 0.97.

Explain radioactive decay

What is the mass of a 70-kg astronaut floating in space

What happens when a hydrogen atom acts like a nonmetal in a chemical reaction?

Which set of numbers best describes the displayed weights on a digital scale that shows each weight to the nearest half pound?

What is the equivalent volume occupied by three milliliters of water? three kilograms three cubic centimeters three centigrams three centimeters

Which list gives the proper sequence of energy changes that occur in a hydroelectric plant? The mechanical energy of the turbine rotates the generator parts The turbine blades capture the kinetic energy of the water Electrical energy is transferred

A locomotive is pulling 16 freight cars, each of which is loaded with the same amount of weight. The mass of each freight car (with its load) is 37,000 kg. If the train is accelerating at 0.