What 3 simple machines are in scissors

A proton travels at a velocity of 3.0x10^6 m/s in a direction perpendicular to a uniform magnetic field. If the proton experiences a magnetic force of 1.15x10-13 N, what is the magnitude of the magnetic field?

You watch distant Sally Homemaker driving nails into a front porch at a regular rate of 1 stroke per second. You hear the sound of the blows exactly synchronized with the blows you see.

Why can't we see the moon during the new moon phase?

Which is a gas at room temperature? A) aluminum B) nitrogen C) potassium D) sodium

A toy train is traveling along a circular track at a constant speed of 1.0 m/s. The acceleration of the train is found to be 4.0 m/s2 . What is the radius of the track?

A racing car's velocity is increased from 44 m/s to 66m/s in 11 seconds. Hsjdjdmaab

A kicker punts a football from the very center of the field to the side line 37 yards down field. What is the displacement of the ball? (A football field is 53 yards wide.

Which factor influencing the distribution of life in the ocean (tides, currents, or waves) is the most influential? Why do you think so?

What is the difference between tangential acceleration and centripetal acceleration?

Differnces of similarities between light and sound