A force parallel to the x-axis acts on a particle moving along the x-axis. This force is associated with potential energy U(x) given by U(x)=αx4, where α = 0.670 J/m4 . What is the magnitude of the force when the particle is at x = -0.800 m?What is the direction of the force when the particle is at x = -0.800 m?

Which type of circuit is becoming more common in residential electrical design and construction? a. hazardous-area circuit b. three-phase circuit c. 480-volt circuit d. communication circuit

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

The energy released by a nuclear fusion reaction is produced when