The position of a mass that is oscillating on a spring is given by x = (17.4 cm) cos[(5.46 s-1)t]. What is the angular frequency for this motion?
A) 0.183 rad/s
B) 5.46 rad/s
C) 2.34 rad/s
D) 17.4 rad/s
E) 0.869 rad/s
B
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A hill is 150 m long and makes an angle of 12° with the horizontal. As a 60-kg jogger runs up the hill, how much work does gravity do on the jogger?
a. 8.82E+4 J b. 1.83E+4 J c. ?1.83E+4 J d. 8.63E+4 J e. zero
Power: When a 14.0-A current flows through an 8.00-? device for 24.0 hours, how much does this cost if energy costs $0.0900 per kW ? h?
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A vibrating guitar string has exactly one antinode in the middle of the string and two nodes at the end. You have produced an oscillation of the string at its
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