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A binary star system consists of two equal mass stars that revolve in circular orbits about there center of mass. The period of the motion, T= 24.7 days and the orbital speed v=220 km/s of the stars can be measured from telescopic observations. What is the mass (kg) of each star?
A parallel plate capacitor is make of two circular thin plates of radius 15 cm separated by 2.5 mm of a material with dielectric constant32. what is the charge resident on each plate
A parallel-plate capacitor is constructed with circular plates of radius 6.4×10?2 . Find the value of the dielectric constant
What resistive force (assumed to be constant) does the wood exert on bullet? How long does it take the bullet to come to rest.
A certain lightbulb is rated at 175.0 W when operating at an rms voltage of 120 V. What is the peak voltage applied across the bulb
A beam contains 3.0 x 106 doubly charged positive ionsper cubic centimeter, all of which are moving north with a speed of5.4 x 105 m/s. What is the magnitude of the currentdensity?
An asteroid orbits the Sun at a constant distance of 3.540e+11 meters. The Sun's mass is 1.99×1030 kg. What is the orbital speed of the asteroid
A man is racing with his son has half the kinetic energy of the son, who has half the mass of the father. What is the original speed of the Man
Suppose a duck lives in a universe in which h = 2? J · s. The duck has a mass of 2.55 kg and is initially known to be within a pond 1.65 m wide. determine the uncertainty in the duck's position after this time interval
A 8.51 -m ladder with a mass of 21.8 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 245 N. What is the net torque acting on the ladder
A circular saw blade of diameter 0.175m starts from rest. In a time interval of 6.05s it accelerates with constant angular acceleration to an angular velocity of 130 rad/s. Find the angle through which the blade has turned
Two people (one having a mass of 40 kg and the other having a mass of 60 kg) stand at one end of a small uniform boat of mass 100 kg and length 20 m. Determine how far the boat moves in the process assuming no friction between the boat and the wate..
Two polarizers are out of alignment by 30°. If light of intensity 7.57 W/m2 and initially polarized halfway between the polarizing angles of the two filters passes through the two filters, what is the intensity of the transmitted light?
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