A 0.54-kg ball is thrown vertically upward with an initial speed of 15.5 m/s. What is the potential energy of the ball when it has travelled one-quarter of the distance to its maximum height

In Bohr's quantum model of the atom: A. The energy of an electron inside the atom is an integral multiple of 13.6eV. B. Electrons lose energy and spiral into the nucleus. C. Gravitational forces are offset by electric forces. D.

List at least 2 actions that involves a chemical change

What is the color of the stars with the highest surface temperature?

Vivian went on a bicycle trip through Germany with her family. One afternoon, she rode her bicycle along a long flat road at a constant speed for 24 kilometers (km). The ride took her 1.2 hours (h). At what speed did she ride her bicycle? A. 0.

A wildebeest runs with an average speed of 4.0 s/m for 15s. What was its distance travelled in meters?

You are operating a boat with a power ventilation system. you have just fueled this boat. how long should you let the ventilation system run before starting the engine?

The force on a current-carrying wire is a maximum when the current is moving parallel to a magnetic field. true or false

In 1999, what percentage of 36-month-old toddlers had been toilet trained? 20 percent 40 percent 60 percent 80 percent

Tarzan, in one tree, sights jane in another tree. he grabs the end of a vine with length 20 m that makes an angle of 45â with the vertical, steps off his tree limb, and swings down and then up to jane’s open arms.

Applying the Law of Conservation of Momentum Train car A is at rest when it is hit by train car B. The two cars, which have the same mass, are stuck together and move off after the collision.