Humans can hear frequencies as low as 21 Hz. If sound is measured during 3 seconds how many wavelengths pass?

Which method will correctly determine whether the forces on an object are balanced or unbalanced? Multiply the forces in the horizontal direction by the forces in the vertical direction.

Explain how magnetic forces enable a maglev train to float above the tracks. Magnetic forces use two main components to keep a maglev train afloat.

Why is max given the name kicker while in day care

Which of the following is an example of work being done on an object? A. A wagon is used to carry vegetables from a garden. OB. A pulley is used to get water from a well. C. A hammer is used to remove a nail from a wall. OD. all of these

The time period from one moon to the next is called a?

A car crash causes an acceleration of 6.2 g. What is the car's acceleration in meters per second squared?

Suppose you read in the newspaper that a new planet has been found. Its average speed in its orbit is 33 kilometers per second (km/s). When it is closest to its star, it moves at 31 km/s, and when it is farthest from its star, it moves at 35 km/s.

What happens when light from a flashlight strikes Water droplets from a mist of water

What is the length of a box in which the minimum energy of an electron is 1.5*10^-18 J?

Describe how to calibrate a candy thermometer