Solve the problem.If a weight on a plane inclined with the horizontal at an angle ? such that the weight just moves down the plane, the coefficient of friction ? is given by 
Use differentials to find the change in ? if ? changes 35° to 39°.
A. 0.060
B. 6.0
C. 3.4
D. 0.10
Answer: D
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Although a firm can buy ownership of another firm's innovations and innovation capabilities, this is not considered true strategic entrepreneurship.
Answer the following statement true (T) or false (F)
Water is flowing along a stream at the rate of 1200 gallons per minute.What is this rate in liters per second? Round to the nearest hundredth. (Remember: There are four quarts in a gallon and 1.057 quarts in a liter.)
What will be an ideal response?
Solve the problem.Linda invests $25,000 for one year. Part is invested at 5%, another part at 6%, and the rest at 8%. The total income from all 3 investments is $1600. The total income from the 5% and 6% investments is equal to the income from the 8% investment. Find the amount invested at each rate.
A. $10,000 at 5%, $10,000 at 6%, $5000 at 8% B. $8000 at 5%, $10,000 at 6%, $7000 at 8% C. $5000 at 5%, $10,000 at 6%, $10,000 at 8% D. $10,000 at 5%, $5000 at 6%, $10,000 at 8%
Solve the problem.When a person bends at the waist with a straight back, the force, F, exerted by the person's lower back muscles can be estimated with the formula 
where w is the person's weight, and ? is the angle made by the person's torso relative to the horizontal. Suppose that a 
person bends at an angle of 35°. Determine the force exerted by the person's back muscles, and estimate the angle that requires the back muscles to exert a force of 197 pounds.
A. 29 pounds; 55.4° B. 199 pounds; 48.3° C. 284 pounds; 35° D. 284 pounds; 55.4°