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Vector A , on the x-y plane, has a magnitude of [a] unit and points in the direction of [angle] degrees measured counterclockwise direction from +x axis. Vector B has components of Bx= [bx], By = [by], Bz= [bz].  Find their dot product A • B ?   

The position of an object is given by x=([A] m/s3)t3 + ([B] m/s2)t2 +([C] m/s)t + [D] m/s. What is the instantaneous acceleration (in m/s2) of the object when t=[t] s?  

A child runs off a [h]-m high dock horizontally and splashes into pond water at a distance [x]-m from the bottom edge of the dock. Find the speed she runs off the dock.

Vector A has magnitude [A], and vector B has magnitude [B].  The angle between them is [AngleDeg] degrees. What is the magnitude of product A x B ?

Given two vectors A =  -3 i + 4 j   and B = 4 i – 3 j  . Let  C = A x B . Which direction does C point to?

You throw a ball vertically upward from the roof of a building.  The ball leaves your hand at even with the roof railing with an upward speed of [v0] m/s; the ball is then in free fall. On the way back down, it just misses the railing and hits the ground [t] s after it leavs your hand.  How tall is the building?

A boy throws a rock with an initial velocity of [v] m/s at [angle] degrees above the horizontal.  If air resistance is negligible, how long does it take for the rock to reach the maximum height of its trajectory?

Questions 20-22 refer to the following case: Responses to 2 different types of parasympathomimetic drugs are to be compared. Drug X is a direct-acting parasympathomimetic and drug Y is an indirect-acting parasympathomimetic drug.  Drug X would: 

Pyridostigmine is useful in treating Myasthenia Gravis because it: 

You have left your career in nursing and are working at a drug company that is developing a novel drug treatment for Parkinson’s Disease. The drug in question is highly selective for the desired dopamine receptor and can be given as a subcutaneous injection daily. In preclinical trials using animal models, the ED50 and LD50 were determined to be 8mg/day and 10 mg/day, respectively. While it is incredibly expensive to produce, it elicits minimal side effects in most patients. The most important reason that the company is not moving forward with clinical trials is that the drug: