A wave has a wavelength of 1.2m andr a frequency of 3 Hz. what is the wave speed

Which statements are true? Check all that apply. A. If heat is added to a substance, the temperature increases unless there is a phase change. B. As heat is added to a substance, the temperature stays constant or goes down. C.

Why does a noise sound fainter as you move away from its source?

What might be a long term benefit for the nation from space exploration. A. Taxes will be slower. B. More people will be interested in studying science. C. More science fiction movies will be made. D. More people will become famous

What is the chemical equation for combination?

One type of electromagnetic radiation that could harm humans

If a mineral has a daughter to parent ration of 3:1 (three daughter atoms for every one parent atom), how many half-lives have passed since the mineral formed?

What is true of the enthalpy value of an intermediate reaction? A. It always has a negative enthalpy value B. It is multiplied by 2 if the intermediate reaction is multiplied by 2 C. It is the same as the total enthalpy of reaction D.

Calculate the percent composition of the compound that forms when 222.6 g N combines completely with 77.4 g 0. calculate to the nearest tenth of a percent.

How many moles of hcl will react with 450 mg of Al (OH) 3

Why are two nonpolar substances able to dissolve in each other?