How long will it take an object to move 50 meters if the object is traveling with an average speed of 0.25
meter per second?

On a cold day, when the air temperature is 0°c, you empty your lungs and take a deep breath, filling your lungs with 4.2 l of air. if you hold your breath until the temperature of the air in your lungs reaches 37°c, what is the volume of the air in your lungs at that point, assuming the pressure does not change?

If a simple machine reduces the strength of a force, what must be increased?

The energy released by a nuclear fusion reaction is produced when