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The grey figure above is a uniform sheet. Find the location of its center of mass.

A 3 kg block is dragged over a displacement of 2 meters by a constant force P acting at an angle of 37o above the horizontal as shown.  The surface is rough, and a constant frictional force f  opposes the motion.  What work was done by the frictional force f during this displacement?

  Extra Credit for 5 pts):  A  light spring is placed between blocks of masses m1 and m2 on a frictionless surface, as shown.  The blocks are pushed together, compressing the spring a distance of 15 cm, and held there.  The blocks are then released from rest.  After the blocks lose contact with the spring ends, m1 has a speed of 3 m/s.  What is the force constant, k, of the spring?  Show and explain all work!

 A 10,000-N shark is supported by a horizontal cable attached to a 6.0-m rod that can pivot at the base. The rod weighs 4000 N. Calculate the tension in the cable. (select closest answer)

A 70-kg satellite circles planet Cruton every 7.1 hours in an orbit with a radius of r = 16 x 106 m.  What is the mass of planet Cruton? (Note: G = 6.67 x 10-11 Nm2/kg2)

Which instrument is used to measure the distance from incus to stapes footplate for selection of a prosthesis in stapedectomy?

In myringotomy procedures, what does “PE” stand for?

A spherical bathysphere has a diameter of 2.00 m.  It is submerged in the Dead Sea at a depth of 8.00 m.  What is the total pressure at this depth?  (ρsea = 1.24 g/cm3, Po = 1.013 x 105 N/m2). 

A gallon container is filled with gasoline.  If the temperature goes up by 45 oF, how many gallons are lost (spilled out)?   (The linear expansion coefficient of gasoline is α = 3.2 x 10-4 (oC)-1.   Note that 1 gal = 3.79 liters, and 1 liter = 10-3 m3)

What is the abbreviation for the following:   Tablespoon: Teaspoon: Microgram: Centimeter: