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Q. A distant galaxy is simultaneously rotating and receding from the earth. As the drawing shows, the galactic center is receding from the earth at a relative speed of uG = 1.8 x 10^6 m/s. Relative to the center, the tangential speed is vT = 0.3 x 10^6 m/s for locations A and B, which are equidistant from the center. When the frequencies of the light coming from regions A and B are measured on earth, they are not the same and each is different than the emitted frequency of 5.800 x 10^14 Hz.
Find the measured frequency for the light from each of the following.
a.) region A
b.) region B
Speedboat A negotiates a curve whose radius is 150 m. Speedboat B negotiates a curve whose radius is 190 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
An ice cube of mass ma and specific heat Ci is initially at temperature T1, where T1 is less than 273K. If L is the latent heat of fusion of water, and the specific heat of water is Cw, how much energy is needed to convert the ice cube to water at ..
If air resistance & other effects are ignored how far away did the shell hit.
A 160 m wide river flows due east at a uniform speed of 4.05 m/s. A boat with a speed of 7.2 m/s relative to the water leaves the south bank pointed in a direction 39o west of north. What is (a) magnitude and (b) direction of the boat's velocity r..
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Determine the efficient spring constant of the molecule
Vector A has a magnitude of 10m and makes an angle of 78o with the positive x axis. Vector B also has a magnitude of 13m and is directed along the negative x axis. Enter your answers in distance then angle (in degrees).
A wheel has eight spokes and a radius of 33.0 . It is mounted on a fixed axle and is spinning at 2.80 . You want to shoot a 38.0 long arrow through the wheel, parallel to this axle, without hitting any of the spokes. Assume that the arrow and the ..
When the cylinder is rotating at 2.0 revolutions per second, determine the magnitude of the centripetal acceleration at the outer wall?
What is its angular displacement in this time.
A particle moving along the x axis in simple harmonic motion starts from its equilibrium position, the origin, at t = 0 and moves to the right. The amplitude of its motion is 1.70 cm and the frequency is 1.30 Hz.
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