A 4,000-kg car traveling at 20 m/s hits a wall with a force of 80,000 N and comes to a stop. What was the impact time?

Which statements below are true

Which type of energy conversion takes place when a lightbulb is turned on? Electromagnetic energy is converted into potential energy. Thermal potential energy is converted into electric energy.

The turning effect of a force is called a moment. Calculate the moment of a force of 3 N acting 0.2 m from a pivot

A car moves around a circular track at a constant rate. What must change? A. only it's speed B. only it's velocity C. both its speed and it's velocity

2 m3 of an ideal gas are compressed from 100 kPa to 200 kPa. As a result of the process, the internal energy of the gas increases by 10 kJ, and 150 kJ of heat is transferred to the surroundings. How much work was done by the gas during the process?

What should a scientist do to use scientific methods for determining the relative age of Earth's rocks? A be biased in opinion B disregard views of others C use creative ideas D prove that methods are non-testable

If a sample of gas is heated at a constant pressure what will happen to the volume of the gas

1. What is the speed of sound in air that has a temperature of 90.0 °C?

What effect does a doubling of the mass have upon the acceleration of the object? Be quantitative.

What type of intermolecular forces would you expect to find in a pure liquid sample of carbon tetrachloride?