How do you calculate friction

A vertical wire carries current in the upward direction. an electron is traveling parallel to the wire. what is the angle α between the velocity of the electron and the magnetic field of the wire?

A centrifuge in a forensics laboratory rotates at an angular speed of 3,750 rev/min. When switched off, it rotates 52.0 times before coming to rest. Find the constant angular acceleration of the centrifuge (in rad/s2).

In order for work to take place Select one: A. the energy present must be related to the movement of the object. B. the force applied must be a balanced force resulting in motion of the object. C.

A bicycle rider sees a car up ahead, and slows down to avoid a collision. He starts off traveling at 15 m s and slows down to 5 m s in 7.5 s. Find the acceleration of the bike rider.

If the moon rotated on it's axis same speed as earth would we see different sides of the moon

What is the reason for Mary's resemblance to her mother. Mary's relatives and friends feel she had her mothers feature

Is a balance scale used to describe how much matter is in an object

At distances greater than 2 femtometers, the nuclear strong force is stronger than (select all that apply): gravity electromagnetic forces nuclear weak force none of the above

Identifying the Functions of Parts of the Ear Which part of the ear changes sound to a signal that the brain can understand? Which part of the ear carries the signal to the brain?

Which tool would a scientist use to find the mass of an object?