About 99% of the atmosphere is composed of

a. argon and carbon dioxide.

b. nitrogen and water vapor.

c. oxygen and carbon dioxide.

d. nitrogen and oxygen.

Assume that the sun is a sphere of radius 6.96 * 10⁸ m and that its surface temperature is 5.8 * 10³ K. If the sun radiates at a rate of 3.90 * 10²⁶ W and is a perfect emitter, at what rate is energy emitted per square meter at the sun's surface?

What is the mass of an object if the force of 17 n causes it to accelerate at 1.5 m/s/s?

What is the order of magnitude of the gravitational force between two 1.0 kilogram charges that are positioned 1.0 meter apart? (1) 11 (2) 2 (3) 1 (4) - 11

Similar to a refrigerator, an ___ transfers thermal energy from inside a room to the outdoors a. vacuum b. air conditioner c. dish washer d. water heater

Cici uses a long extension cord to plug a lamp in a wall outlet in the next room. What effect will the extension cord have on the circuit A it will decrease the resistance of the circuit B it will increase the voltage of the outlet C it will

A rotating water pump works by taking water in at one side of a rotating wheel, and expelling it from the other side. If a pump with a radius of 0.120 m starts from rest and accelerates at 30.

Which describes a property shared by ultraviolet light and X-rays? A They are both transverse waves. B They share the same wavelength. C They contain less energy than visible light. D They both require a medium to travel through.

What is the potential energy called that is associated with objects that can be stretched

Which of the following is not a current use of radioisotopes? medical diagnosis sterilization of equipment detection of leaks in building structures light fixtures

A Blu-ray disc is approximately 11 centimeters in diameter. The drive motor of a Blu-ray player is able to rotate up to 10,000 revolutions per minute. (a) Find the maximum angular speed (in radians per second) of a Blu-ray disc as it rotates