Solve the problem.At lift-off, a rocket weighs 40.3 tons, including the weight of fuel. It is fired vertically, and the fuel is consumed at the rate of 2.13 tons per 1,000 ft of ascent. How much work is done in lifting the rocket to an altitude of 10,000 ft?
A. 5.10 x 105 ft?ton
B. 3.50 x 105 ft?ton
C. 2.97 x 105 ft?ton
D. 3.32 x 105 ft?ton
Answer: C
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When a car makes an emergency stop on dry pavement, it leaves skid marks on the pavement. The length L, in feet, of the skid marks is related to the speed S, in miles per hour, when the brakes were applied. The relationship is
.
A: Make a graph of S against L for skid mark lengths up to 200 feet.B: A man involved in an emergency stop claimed his speed was between 30 and 40 miles per hour. Add the horizontal lines represented by
and 
to the graph you made in part A.C: What range of skid mark length would support the driver's claim? Round your answer to two decimal places/
What will be an ideal response?
Find the flux of the vector field F across the surface S in the indicated direction.F = xi + yj + z3k; S is portion of the cone z = 2
between z = 2 and z = 4; direction is outward
A. 
?
B. - 
C. - 
?
D. 
?
Write the number using scientific notation.The earth is approximately 92,900,000 miles from the sun.
A. 9.29 × 108 B. 9.29 × 10-7 C. 9.29 × 107 D. 9.29 × 106
Evaluate
