Emission of light from an atom occurs when the electron:

If a direct relationship exists between Variable A and Variable B, what would happen to Variable B if Variable A is increased? It will increase too. It will decrease. It will go up and down in a cycle. It will respond randomly.

What are advantage of frictional force ?

Imagine standing on a bathroom scale and reading your weight. now lift one foot and read your weight again. does the scale read more, less or the same weight when you are standing on one foot?

This diagram shows the movement of a skater at 1-second intervals. What is the magnitude of the average velocity, in m/s, if the skater went for a total of 12 meters? A) 3 m/s B) 4 m/s C) 12/5 m/s D) 48 m/s

Which colors are contained in white light? o All of the colors o No colors o All the light colors o All the dark colors

During World War II, both the Allied and Axis powers used propaganda to A. weaken public support for the war. B. downplay public opinion. C. manipulate the public through the use of humor. D. shape public support of the war

What type of simple machine is a hand drill? A) pulley B) wedge C) ramp D) screw

Calculate the wavelength and frequency of the radiation emitted by the electronic transition from the 10th to the 9th excited state of hydrogen.

An unknown fluid has a specific gravity of 0.750. What is the volume of 22.5 kg of this fluid? A. 10 L B. 20 L C. 30 L D. 40 L

What kind of tide is responsible for extreme tides