Why is outer space silent

If two stars are the same size but different temperature which star is more luminous

An FM radio station broadcasts at 9.23 * 107 Hz. Given that the radio waves travel at 3.00 * 108 m/s, what is the wavelength of these waves?

when we say that electricity is flowing through a wire, what is specifically flowing through the wire?

Which statement is true of stellar evolution?

A pendulum bob is given some initial potential energy by raising it. Next it is released. Compare this maximum potential energy with the energy the pendulum bob contains at the lowest part of its path. A.

Electrons flowing into a resistor make that end A. positive with respect to the other end B. negative with respect to the other end C. higher in resistance D. extremely warm

The force of air resistance acts to oppose the motion of an object moving through the air. A ball is thrown upward and eventually returns to the ground.

The temperature of a substance during an experiment can be modeled by the function f (x) = - 7.5cos (πx30) + 31.4, where f (x) is the temperature °c and x is the number of minutes into the experiment.

Which of the following are good conductors? A. A rubber tire B. A penny C. A newspaper D. An aluminum soda can E. Water F. Air

Ideentify the two atmospheric layers that contain air as warm as 25 degrees Celsius.