Perform the indicated conversion within American units of length.27 feet to yards
A. 2
yd
B. 324 yd
C. 9 yd
D. 81 yd
Answer: C
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Solve the problem.A simple exercise machine can be constructed by mounting a stiff spring securely to a wall and attaching a "T" handle to the free end of the spring. The arms can be exercised simply by pulling the "T" handle towards the torso. For a particular spring, the stretch distance is related to the work exerted by the equationx
= 
,where W is the work exerted in joules and x is the stretch distance in cm. How far will you stretch the spring if you exert 640 joules of work? Round your answer to three decimal places.
A. 0.087 cm B. 0.123 cm C. 0.131 cm D. 0.015 cm
An object of mass m (in grams) attached to a coiled spring with damping factor b (in grams per second) is pulled down a distance a (in centimeters) from its rest position and then released. Assume that the positive direction of the motion is up and the period is T (in seconds) under simple harmonic motion. Develop a model that relates the distance d of the object from its rest position after t seconds.m = 25, a = 14, b = 0.85, T = 3
A. d = -14e-0.85t/50 cos 
B. d = 14e0.85t/50 cos 
C. d = 14e-0.85t/50 cos 
D. d = -14e-0.85t/50 cos 
Use the numeric integration feature on your calculator to find the integral.
A. 0.00248 B. 0.05048 C. 0.88623 D. 0.00415
Solve. Remember to insert units when writing your answer.Alex normally weighs 108 kilograms, but he lost 2700 grams after being sick. Find Alex's new weight.
A. 105.3 kg B. 107.73 kg C. 110.7 kg D. 81 kg