What category was your communication style?

A 2.03 kg book is placed on a flat desk.  Suppose the coefficient of static friction between the book and the desk is 0.542 and the coefficient of kinetic friction is 0.294.  How much force is needed to begin to move the book and how much force is needed to keep the book moving at a constant velocity?

Suppose you exert a force of 180 N tangential to a 0.280-m-radius 75.0-kg wheel (a solid disk). What torque is exerted? What is the angular acceleration assuming negligible opposing friction?

For which case will the flow rate increase for Poiseuille flow?

A person drops a cylindrical steel bar (Y = 1.70 x 1011 Pa) from a height of 1.30 m (distance between the floor and the bottom of the vertically oriented bar).  The bar, or length L = 0.63 m, radius R =0.55 cm, and mass m=1.30 kg, hits the floow and bounces up, maintaining its vertical orientation.  Assuming the collision is elastic (bounces) and no rotation occurs, what is the maximum compression of the bar?  The formula for stress is given by:

Vector A has magnitude of 13.5 and is 345o counter-clockwise up from the +x-axis.  What are the x- and y-components of the vector?

After an average acceleration of 3.39 m/s2 during 2.29 s, a car reaches a final velocity of 16.1 m/s.  Find the car’s initial velocity.

Osmotic back pressure can be found by:

A squirrel runs along an overhead telephone wire that stretches from the top of one pole to the next. The creature is initially at position xi = 2.91 m, as measured from the center of the wire segment. It then undergoes a displacement of Δx = -5.61 m. What is the squirrel\’s final position xf?

A 129-kg horizontal platform is a uniform disk of radius 1.61 m and can rotate about the vertical axis through its center. A 65.7-kg person stands on the platform at a distance of 1.07 m from the center and a 27.3-kg dog sits on the platform near the person, 1.31 m from the center. Find the moment of inertia of this system, consisting of the platform and its population, with respect to the axis.