A 60 W lightbulb is on for 24 hours. A stereo with a power of 150 W is on for 2 hours. Which statement correctly compares the energy used by these devices?

If a person weighs 890 newtons, roughly what is the mass of the person?

How does the release of an alpha particle affect a mass number? Atomic number?

A mummy is discovered that has only one-fourth of its original carbon-14 remaining. How old is the mummy, in years? Explain your reasoning.

an electron and a proton are released in a region of space where the electrical field is vertically downward. How do the elctric forces acting on the electron and proton compare?

What are two reasons the period of Venus is shorter than the period of earth

F a metal ball suspended by a rod is at rest, which force is responsible for balancing the force due to gravity?

If the mass of a material is 48 grams and the volume of the material is 8 cm^3, what would the density of the material be?

Your family is moving to a new house. While lifting the box 1.5 m straight up you exerted a force of 200 N for 1 second. How much work is required?

Which best describes oil and water

Both the electrical force and the gravitational force between two objects share which relationship? They are directly proportional to mass. They are inversely proportional to the square of the distance. They are inversely proportional to charge.