The power of a heart which beats 72 times in a minute is 1.2kW. Calculate the work done by heart for each beat.

What is the action force and reaction force of two bumper cars collide

What is the density of a cube with a mass of 4.5 killograms and measures 100cm on each side

If you increase the mass of an object, but keep the force on it constant, its acceleration decreases?

A boy is pushing forward on a crate with a force of 100 newtons. The reaction force is ... 1. the crate pushing back on the boy with a force of 100 newtons. 2. the crate moving forward at a constant rate. 3.

If you change the mass of a moving object, you change its?

How much heat is contained in 100 kg of water at 60.0 °C?

Which of the following statements is the best definition of weather? Weather is the current conditions in the atmosphere. Weather is the usual conditions in the atmosphere. Weather is the average conditions in the atmosphere.

Analyze: In the series circuit what characteristic was common throughout the experiment? What changed as you added more light bulbs?

StA A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far has the boat traveled? Round your answer to the nearest whole number.

In Part A, you determined that the heat added to the coffee is what you got. If it takes 4.2 J of energy to raise the temperature of 1.0 mL of coffee by 1.0∘C, then it should take twice as much energy to raise the temperature of 2.