Which phenomenon generates electric current?

A black body radiation

B ultraviolet catastrophe

C emission spectra

D photoelectric effect

If the current through R1 is 2A what is the current through R2

As a woman walks, her entire weight is momentarily placed on one heel of her high-heeled shoes. calculate the pressure exerted on the floor by the heel if it has an area of 1.54 cm2 and the woman's mass is 69.5 kg. express the pressure in pascals.

What does it mean for waves to be absorbed by a certain medium? Make sure to include energy in your explanation.

The following reaction is balanced: 2Al2O3 → 4Al + 3O2 True False

The Statue of Liberty is made out of copper and was once shiny and copper-colored. Over the years, the copper has gone through a process called oxidation, where it has changed into a new material.

Explain Newton's First Law for the following. If you walk across the room holding a ball, when should you drop it to ensure that it lands on a target? Before, after or when you are directly on the target?

In what way are all forms of potential energy the same?

Enise is riding her bike and falls to the ground. During the collision, she hits both grass and cement. Which best explains why Denise had fewer injuries to the area of her body that hit the grass?

A rock is dropped into the Grand Canyon. It takes 18 seconds to hit the bottom. Calculate how deep the canyon is.

A change from one form of energy into another is called a. gravitational potential energy. b. work. c. conservation of energy. d. an energy transformation