The position of an air-track cart that is oscillating on a spring is given by the equation x = (12.4 cm) cos[(6.35 s-1)t]. At what value of t after t = 0.00 s is the cart first located at x = 8.47 cm?
A) 7.39 s B) 7.75 s C) 4.34 s D) 0.108 s E) 0.129 s
E
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Simple Harmonic Motion: The position of an object that is oscillating on a spring is given by the equation x = (18.3 cm) cos[(2.35 s-1)t]. What are the (a) frequency, (b) amplitude, and (c) period of this motion?
What will be an ideal response?
Buoyancy: If a ship has a mass of 10 million kilograms, what volume of fresh water must it displace in order to float? The density of water is 1000 kg/m3.
A. 1010 m3 B. 1012 m3 C. 104 m3 D. 107 m3 E. 108 m3
The equivalence principle can be best illustrated by ____
a. a person riding in an elevator b. a rocket coasting through space at a constant velocity c. the change in mass of a moving body d. the formation of energy by nuclear fusion e. a car ride on a highway with the windows open
The Moon orbits the Earth the Earth orbits the Sun. If the Earth-moon system is ˜1 AU from the Sun and takes ˜1 Earth year to orbit, what is the combined mass of the triple system? Express your answer in solar mass units.
a. 1 b. 1.1 c. 1.2 d. 1.3