The ratio of red to blue marbles in a bag 3:2. If there are 18 red marbles. How many blue marbles are in the bag

What form of energy is a bonfire and a bunsen burner?

A flat screen is located 0.55 m away from a single slit. Light with a wavelength of 544 nm (in vacuum) shines through the slit and produces a diffraction pattern. The width of the central bright fringe on the screen is 0.052 m.

a 85 Kg girl, running 1.5 m/s, runs for 2550 seconds. How much force is required to stop her in 5 seconds

A rock with mass of 5.0 kg is carried up a small hill 10 meters high. how much work had to be done in carrying the rock up hill? w = 490 j 4900 j 245 j impossible to tell because velocity not given

A box is being pulled to the right. What is the magnitude of the Kinect frictional force?

A ball is thrown horizontally at 12.2 m/s from the roof of a building and lands 21.0 m from the base of the building. How high is the building?

If an object has an acceleration of - 5m/s squared, describe its motion

Scientists study contrast sensitivity for sine wave gratings across many different spatial frequencies because

Which of the following statements cannot be supported by Kepler's laws of planetary motion? The distance of a planet around the sun changes throughout its orbit. The speed a planet is moving around the sun changes throughout the year.

When was the triple beam balance invented