The charge of an atom from an excited state to the ground state always requires

a. an increase in electron energy

b. release of visible light

c. absorption of energy

d. emission of electromagnetic radiation

Where do subduction zones often occur

The source of the earth's magnetic field appears to be located at the center of the solar system. True or fALSE

What is nonuniform positive acceleration?

A student places one end of an iron nail in a cup of boiling water. Eventually, the whole nail is hot. He says that the heat transferred through the nail by convection. Which of the following explains why his statement is incorrect

Which is a unit of volume? A) centimeter B) meter C) milligram D) milliliter

What is the velocity of a bullet train that moves 400 meters west over 3 minutes anad 20 seconds?

While in empty space, an astronaut throws a ball at a velocity of 12 m/s. what will the velocity of the ball be after it has traveled 6 meters?

Which of the following statements are true? (Select all that apply.) Ammeters have a relatively high resistance and are placed in parallel with a resistor. Ammeters have a very low resistance and are placed in series with a resistor.

If a boulder has a weight of 675,000 N what is it's mass

How does the mass of something affect the potential energy?