A visible violet light emits light with a wavelength of 4.00 * 10-7 m. Calculate the frequency of the violet light.

Which part of the atom has to stay the same for it to be the same element? A.) number of neutrons B.) number of protons C.) number of electrons D.) number of protons, neutrons, and electrons °ω°

Tell whether each element has a high or low electronegativity : bromine, chlorine, potassium, lithium

In a Little League baseball game, the 145 g ball enters the strike zone with a speed of 17.0 m/s. The batter hits the ball, and it leaves his bat with a speed of 24.0 m/s in exactly the opposite direction.

11) An airplane is moving at a net force of zero. This means the airplane is A. slowing down and losing altitude B. moving at a constant speed and losing attitude C. slowing down and traveling along a straight line D.

Few girls can resist flattery

If you are going 30 miles an hour in good condition, it will take how many feet to stop.

Name of group to which hydrogen belongs to

Which would increase the reaction rate? Check all that apply. A. Raising the temperature B. Stirring the reaction C. Raising the activation energy D. Adding a catalyst

How much of the electrical energy transformed by a common light bulb becomes heat energy?

What is the current for a 1200W microwave connected to 110V outlet.