How long does it take the star and planet to complete one orbit around their center of mass?
What will be an ideal response?
: about 4 days
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A string with a mass/length of 0.00200 kg/m is stretched between two points with a tension of 120 N. If the fundamental frequency is 440 Hz, then what is the distance between the two points?
A. 17.5 cm B. 20.3 cm C. 27.8 cm D. 30.0 cm E. 35.0 cm
Power: What is the net power needed to change the speed of a 1600-kg sport utility vehicle from 15.0 m/s to 40.0 m/s in 4.00 seconds?
A. 100 kW B. 10.0 kW C. 140 kW D. 14.0 kW E. 275 kW
During World War I, Germany used a "Big Bertha" cannon to hurl shells into Paris 30 miles away. This gun also had a long barrel. What is the reason for using a long barrel in these guns?
A) To provide a larger ratio of kinetic energy to potential energy. B) To reduce frictional losses. C) To allow the force of the expanding gases from the gunpowder to act for a longer time. D) To increase the force exerted on the bullet due to the expanding gases from the gunpowder. E) To reduce the force exerted on the bullet due to the expanding gases from the gunpowder.
Explain how the resonance among Io, Europa, and Ganymede makes their orbits slightly elliptical
What will be an ideal response?