A student measures the speed of a rolling ball three times. She adds the measurements and divides by 3. What quantity did the student calculate?

A woman tries to put lipstick in the car. She has to come to a fast stop, and the lipstick falls to the floor and rolls forward, under the brake pedal. She dies. Why does this happen?

A temperature of 273 K is the temperature at which water Question 7 options: A) boils. B) freezes. C) evaporates. D) is at its densest.

List both chemical equations for photosynthesis and cellular respiration. It is okay to use words for the equations, but you also need to write down the actual formula that includes the chemical compounds as found in the lessons.

What happens to the gravitational force between two objects if the distance between them increses four times?

In your own words describe how matter is defined

The power rating of a vacuum cleaner is 0.8 kilowatts. If you use the vacuum cleaner for 2.5 hours, how much energy does it use?

Which has more gravitational potential energy - - a cliff diver at the top of the cliff or a cliff diver at the bottom of the cliff?

A skydiver with a mass of 60 kg jumps from an airplane. Five seconds after jumping the force of air resistance is 300 N. What is the acceleration of the sky diver, five seconds after jumping?

How many basic wave forms are there? A.) 1 B.) 2 C.) 3 D.) 4

How much power is reqired to lift a 10-n box 2 meters