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?

What effect does the force of gravity have on the vertical velocity of a projectile?

Should I drop out of elemenertry school?

In an atom, an electron that is close to the nucleus is on the highest energy level.

Explain how electricity can be conducted by acids ad=nd bases

Sally Sizzle builds a circuit by connecting three resistors in parallel with a 9V battery. The current in this circuit is 3.6 amps. Sally wants to add another resistor in parallel to increase the current to 4.6 amps.

4. (**) How can a current be induced in a closed circuit without the use of a battery or electrical power? A. By moving the circuit into a high temperature field B.

Ionic compounds form between elements that are metals and elements that are

You observe someone pulling a block of mass 41 kg across a low-friction surface. While they pull a distance of 5 m in the direction of motion, the speed of the block changes from 5 m/s to 6 m/s.

What is the speed of a bobsled whose distance-time graph indicates that it traveled 123m in 28s?

What is the work done by a 20 newton force applied at an angle of 45.0° to move a box a horizontal distance of 40 meters?