Printers have a demand function of \(p(x) = \frac{-1}{20}x+ 400\), where \(x\) is the number of printers demanded, and \(p(x)\) is in dollars. On the other hand, when the printers were being sold for $300, they supplied 1000 printers. Suppose that if the price were set to $100 or lower, they would not supply any printers at all. What is the equilibrium point for the printers? Round your answers to the nearest whole number.  

For the above question, list the numbers and associate them with proper symbols.  Please include unit next to your number.   Symbols Number  

This is an original exam question by Prof Kay Han.  It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website.   Perform the following operation (Write down the numbers on your calculator and round off according to significant figures rules.)   mL – mL – mL

This is an original exam question by Prof Kay Han.  It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website.   A roller coaster cart travels in bowl shaped track.  At the end of the track, which direction will the cart travel?

This is an original exam question by Prof Kay Han.  It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website.   If an object’s velocity-versus-time graph is a horizontal line, what can you say about the object’s acceleration?    

This is an original exam question by Prof Kay Han.  It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website.   The largest salami in the world, made in Norway.  Johnny made one that had a radius of  m.   A hungry mouse ran around the salami’s circumference with a tangential speed of m/s.  Calculate the centripetal acceleration in m/s2 of the mouse.

This is an original exam question by Prof Kay Han.  It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website.   In the follow ticker tape experiment, select the one(s) that is(are) going faster and faster.  

This is an original exam question by Prof Kay Han.  It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website.   A baseball is shot into the air from a spring loaded cannon. The diagram shows the ball at five locations. At which location is the magnitude of the acceleration least?  Ignore air resistance.

This is an original exam question by Prof Kay Han.  It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website.   Jack pushes a shopping cart in a straight line at a constant speed of 1 m/s.  

This is an original exam question by Prof Kay Han.  It is forbidden to photograph, upload, download, copy or share this problem with anyone, or to post it onto any website.   A ball is rolled off the edge of a table that is 1 meter high. It lands on the floor 0.8 meters away from the edge of the table. At the exact moment the ball rolls off the edge of the table, another ball is released from rest at a height of 1.0 meter from the floor. Which ball will hit the floor first?