50 J of work was performed in 20 seconds. How much power was used to do this task? A. 4 W B. 24.5 W C. 0.4 W D. 2.5 W

Your swimming pool is 8 ft long, 6 ft wide and 1.5 ft deep. how many gallons of water will be needed to fill it?

A form of energy that exhibits wave behavior as it travels through space is

A scientist found a new bacteria in a hot water sulfur spring that uses sulfur as a source of energy instead sunlight. What kind of organism could it be?

A speedboat travels from the dock to the first buoy, a distance of 20 meters, in 18 seconds. It began the trip at a speed of 0 m/s. By the time it reached the buoy, it was going 10 m/s. What was the average velocity of the boat?

Turning a magnet very quickley would be best used to create a. radition b. light waves c. an electic current d. a covertioncurrent

What is the energy equivalent of 5.0 kg of mass? be sure to show all work to support your answer?

An ant carries food at a speed of 1 cm/s. How long will it take the ant to carry a cookie crumb from the kitchen table to the ant hill, a distance of 50 m? Express your answer in seconds, minutes and hours.

What must you know in order to determine the gravitational force between two objects?

When seen from an airplane, a rainbow sometimes forms a complete circle. When this happens, the plane's shadow is a. in the center of the rainbow. b. totally outside the rainbow. c. in the upper part of the rainbow. d. Nowhere. There is no shadow. e.

1. a substance with a pH of 3 2. a substance with a pH of 10 3. a substance with a pH of 7 4. an indicator 5. a scale that represents the concentration of H30+, 0-14 A.) phenolphthalein B.) base C.) pH scale D.) neutral E.) acid