A spring has a natural length of 20cm. If a 25-N force is required to keep it stretched to a length of 30 cm, how much work is required to stretch it from 20 cm to 25 cm?

What length of tube would be required to produce a second tone under the same experimental conditions? Explain your answer.

If a raindrop is 0.05 cm3 in volume, what would the volume of an avogadro number of raindrops be?

What currents are responsible for powering the movement of tectonic plates? A. Platonic B. Tectonic C. Convection D. Plutonium

What is the average speed of the marble as it rolls across the floor? A. 150 m/s B. 15 m/s C. 0.67 m/s D. 1.5 m/s

In a cup of liquid water when would water molcules stop moving

A motorbike travels 45 miles in 15 minutes what is its speed

What is the relationship between the kinetic energy of molecules in an object and the object temperature

A man inside an insulated metallic cage does not receive shock when the cage is highly charge. explain.

When a 3.50-g sample of liquid octane (c8h18) is burned in a bomb calorimeter, the temperature of the calorimeter rises by 27.3 ∘c. the heat capacity of the calorimeter, measured in a separate experiment, is 6.22 kj/∘c?

Air has pressure because a. the stratosphere is thick b. air has mass c. wind moves the air d. temperature warms the air