According to the simple de Broglie model, how many wavelengths are there in an electron wave in the first orbit? In the second orbit? In the nth orbit?

a wheelchair ramp for a business cannot be steeper than 5° a similar ramp for a home can be 10° what is the difference in degrees of these two ramps? Explain.

Does temperature affect the dissolving phase?

When is a shadow at its shortest

An airplane files at an altitude of 36000 km and is traveling at a velocity of 300.0 kn/h to the north but the tailwind is 20.0 km/h

Which of the following scientists inferred that an atom positive charge must be clustered

Technician A says that for best results, loosen the fastener immediately after spraying it with penetrating oil. Technician B says that rusted fasteners may be loosened by tapping with a hammer. Which technician is correct? a. technician A only b.

A roller coaster track is 3,000 meters long. It takes 100 seconds to travel once around the roller coaster. Is the velocity constant throughout the trip? Explain.

Why does the air pressure inside the tires of a car increase when the car is driven?

If you were to drop a clay ball and a rubber ball of the same mass from the same height, which would have a greater change of momentum after they hit the ground?

Which is a possible measurement of the momentum of a moving object? 11 kg∙m2/s2 2.8 kg∙m/s 16 kg∙m/s, due west 9.3 m/s2, due north