What is a light year? The time it takes for light to reach Earth from the sun, the distance light travels in one year, the time it takes for light to travel around the sun or the distance light can travel in a year before it burns out.

A girl rides her bike with an average velocity of 15.2 km/h northward. If it takes her 25 min to ride to her friend's house, what is her displacement?

The true brightness of an object is called its A. luminosity. B. intensity. C. magnitude. D. viscosity.

What is newton's second law? force is a result of mass and acceleration. speed is a result of mass and acceleration. velocity is a result of mass and acceleration.

What pressure in units of torr is equal to 1.14 atm of pressure?

A stone is thrown straight up from the ground with an initial speed of 15.2 m/s. At the same instant, a stone is dropped from a height of h meters above ground level. The two stones strike the ground simultaneously. Find the height h.

The Congo River is in Africa. True or False

A new cannon was being developed in a science lab. The instructor wanted to do some testing of the cannon's ability to launch objects with different masses. The instructor used tennis balls and filled them with lead, rocks, and styrofoam.

Two machines, A and B, each working at a constant rate, can complete a certain task working together in 6 days. In how many days, working alone, can machine A complete the task?

Austin and his friends are pushing a heavy box up a ramp. How can they increase the rate at which the box is moving?

A lightbulb has a voltage of 120 V and uses a current of. 75 amps. What is the electric power used by the lightbulb? Show work