A radio wave has a frequency of 5.5 * 104 hertz and travels at a speed of 3.0 * 108 meters/second. What is its wavelength?

What is an Exothermic Reaction? What is an Endothermic Reaction?

Thermal energy is transferred from the sum to the earth by

If you put a object in front of the mirror why does it appear the opposite way

Do you think that the volume control on an audio amplifier is calibrated in intensity or intensity level? In other words, if you turn your stereo half way down, have you cut the power in half or cut the decibel level in half? Explain

Visible light occupies the majority of the electromagnetic spectrum? Ture or false

Heat that is transferred by the movement of currents within a fluid is called?

5. What is the percent composition of sulfur in H2SO4? A. 32.7% B. 65.2% C. 98.1% D. 2.1%

A 0.8kg object accelerate at a rate of4 m/s2. What is the net force acting on a object

Which of the following is the best definition of an isotope? A. elements of the same kind with different numbers of neutrons B. elements of the same kind that have lost electrons C. elements of the same kind that have different electrical charges

Two cars approach each other; both cars are moving westward, one at 85 km/h, the other at 54 km/h. what is the magnitude of the velocity of the first car relative to (in the frame of reference of) the second car? answer in units of km/h.