Which of the following is calculated by dividing work by time?

A.) Power

B.) Energy

C.) Force

distance

A constant 20 N force is applied to a 7 kg box to push it along the ground. How much work is done by this force if the box moves 2 m?

What happens when ice transform into steam

The air in a room has a mass of 50kg and a specific heat of 1,000 J / (kg. C). What is the change in the thermal energy of the air when it warms from 20 degrees C to 30 degrees C?

Distance travelled can be found from the A area under a velocity-time graph B area under an acceleration-time graph C gradient of a force-time graph D gradient of a velocity-time graph

Which operations are not associative? A. multiplication and addition B. multiplication and division C. division and subtraction D. addition and subtraction

What happens to the movement of particles in a liquid when it is heated?

During a demonstration of the gravitational force on falling objects to her class, Sarah drops an 11 lb. bowling ball from the top of the science building. Determine distance the ball has traveled after falling for 1.

A teacher wants to demonstrate that unheated water can boil at room temperature in a beaker within a bell jar connected to a vac-uum pump. However, the vacuum pump is faulty and can reduce pressures only to 15 kPa.

How many btus of heat energy are needed to raise the temperature of 99.6 lbs of water from 50 °f to 130 °f?

What is a different form of a characteristic, such as brown hair, is called