Bohr found experimental evidence for his atomic model by studying what?

An autographed baseball rolls off of a 0.76 m high desk and strikes the floor 0.61 m away from the desk. how fast was it rolling on the desk before it fell off? the acceleration of gravity is 9.81 m/s 2. answer in units of m/s.

Why did the untied states fight a major war in southeast asia

Which is the best example of the commercialization of modern sports? A. A school team plays a rival school at baseball. B. A local soccer club makes it to the regional finals. C. Millions of spectators watch the NFL Super Bowl. D.

Only a small amount of the energy used in an incandescent light bulb (regular bulbs commonly used in households) is actually converted into light. What happens to the rest of the energy

If a girl is running along a straight road with a uniform velocity 1.5 m/s, find her [Assume g = 10m/s?] acceleration.

Which represents a system that is almost completely closed?

If many household substances classify as acids or bases what is the ph scale

A protostar forms once the nebular cloud condenses and the core begins

How do whales bats and dolphins use echolocation? A To scare away predators B To attract mates C To orient them selves and find food D To tell animals of there species where they are

How much force would be needed to move a car with the mass of 100kg to an acceleration of 5m/s/s?