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In an eclipsing spectroscopic binary system, the maximum radial velocities for the two components are 20 and 5 km/s. The orbit is circular, and the orbital period is 5 years. It takes .3 days from the start of the eclipse to the main minimum, which the lasts one day.
a) What are the masses of the two stars?
b) What are the radii of the two stars?
The first sled is 30kg, connected with rope B to the second sled of mass 20 kg, connected with rope A to the first sled of mass 10 kg, which is being pulled by a rope of 137 N. Illustrate What is the tension in ropes A and B.
a double-slit arrangment prduce bright interference fringrs that are seprated by 2.60 mm when the wavelengt is 589nm. what is the bright fringe separation
A 45.0 g ball of copper has a net charge of 1.75 µC. What fraction of the copper's electrons have been removed
A 530.0g bird is flying horizontally at 2.20m/s, not paying much attention, when it suddenly flies into a stationary vertical bar, What is the angular velocity of the bar just after it is hit by the bird
A photon of wavelength 4.28 x 10^-2 nm strikes a free electron and is scattered at an angle of 32.0 degrees from its original direction. find the energy gained by the electron
The wind blows with a force of 425N north on a sail boat, while the water exerts a force of 325N west on the sailboat. Find out the magnitude and direction of the net external force on the sailboat.
A speeder is pulling directly away and increasing his distance from a police car that is moving at 23 m/s with respect to the ground. Find the speeder's speed with respect to the ground
A car travels along a straight east-west road. A coordinate system is established on the road, how far from Mulberry Road did it start
One of the events in the Scottish Highland Games is the sheaf toss, in which a 7.92-kg bag of hay is tossed straight up into the air using a pitchfork. Using the total impulse produced by gravity, determine how long the sheaf is airborne
The water in a deep underground well is used as the cold reservoir of a Carnot heat pump that maintains the temperature of a house at 296 K. Determine the temperature of the well water
A man pushes a heavy box up a plank inclined at an angle of 30. Calculate the ideal mechanical advantage of this incline plane
if a hydroelectric facility is to produce 100 000 hp with an elevation difference of 300 ft, what is a suitable speed (in rpm) if a kaplan turbine, operating at high efficiency, is used
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