How many electrons in a hydrogen atom?

While driving north at 25 m/s during a rainstorm you notice that the rain makes an angle of 38° with the vertical. while driving back home moments later at the same speed but in the opposite direction, you see that the rain is falling straight down.

A pendulum swings through 10 cycles in 2 seconds. the frequency of the pendulum is?

Above the ground, a 1 m long wire is suspended horizontally perpendicular to a line running from its center to a nearby observer. A uniform magnetic field of 1.8 Tesla permeates the volume occupied by this wire in the upward direction.

An electron moving with a velocity of 1.1 ✕ 106 m/s along the positive y-axis encounters a uniform B-field of 6.0 T oriented along the negative z-axis. Find the force on this charged particle due to this magnetic field.

Support that P (e) = 0.76, P (F) = 0.45, and P (E and F) = 0.32. What is P (E or F) ?

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.