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Which  of the figures below depicts the Blood-Brain-Barrier?

A m = 8 kg block on a horizontal frictionless surface is attached to a light spring (force constant = 0.85 kN/m).  The block is initially at rest at its equilibrium position when a force (magnitude P = 80 N) acting parallel to the surface is applied to the block, as shown.  Starting from the “One Equation to Rule Them All” (the energy equation) and showing all steps, find the speed of the block when it is 13 cm from its equilibrium position.  (Round to nearest answer)

 A 2-kg ball slides on a curved wire, starting from rest at point A.  The segment from A to B is rough (i.e. it has friction!) and the segment from B to C is frictionless.  Find the speed of the ball at B if the ball comes to rest (momentarily) at C. (select closest answer)

Object A, moving to the right, has a one-dimensional elastic collision with object B which is initially at rest as shown. What is the final velocity of object A?

What are your instructor’s online office hours for this course?

The Veterinary Technician  has NO role during colic surgery.

  Which two of the following statements is TRUE/CORRECT with respect to the treatment/prevention of intoxications involving the VTTT shown above?

A roller-coaster has a mass of 400 kg when fully loaded with passengers.  At the bottom of a circular dip of radius 60m (as shown in the figure) the car has a speed of 14 m/s.  What is the magnitude of the force of the track on the car at the bottom of the dip?

 Three masses are located in the xy plane as shown.  What is the magnitude of the resultant force (caused by the other two masses) on the mass at the origin, x = 0, y = 0? (select closest answer)

 (Extra Credit  worth 5 points):  All of the above objects have the same mass M, and the same radial distance R from the axis of rotation as shown.  Which two objects have the same moment of inertia about the central axis? (Select a correct answer and show work to prove why!)