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Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.63x1011 m apart. The larger of the two stars has a mass of 3.66x1030 kg, and its center is 2.24x1011 m from the system's center of mass. What is the mass of the smaller star?
Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with a force of 93.9 N, Jill pulls with 78.3 N
how come the formula: (change)v / (change)t = (change)x cannot be used for this exercise When a 58-g tennis ball is served, What is the magnitude of the net force acting on the ball
A 84.3-kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.67 rad/s. Find the angular velocity of the platform with its load
A car is moving to the left at 20 m/s while a truck is moving to the right at 25 m/s. what is the perceived frequency, in Hz, of the sound by the driver of the car
A uniform cylindrical turntable of radius 1.80 m and mass 25.2 kg rotates counterclockwise in a horizontal plane with an initial angular speed of 4pi rad/s. Find the final angular speed of the clay and turntable
2.0 kg ball moving with a speed of 3.0 m/s hits, elastically, an identical stationary ball as shown. If the first ball moves away with angle 30° to the original path,
a 1600 kg car is traveling along a straight road at 20 ms. two seconds later its speed is 21 ms. what is the magnitude
A 0.200 nm photon collides by a stationary electron. After the collision, the electron moves forward and the photon recoil backward. Discover the momentum and the kinetic energy of the electron.
q1. a spring of force constant k2.5102 nm is suspended form a rigid support. an object o mass 1.00 kg is attached to
A friend is working on a biology experiment and needs to make an electric field of magnitude 460 {rm N/C} at a distance of 10 {rm cm} from the central portion of the large nonconducting square plate 5.2 {rm m} on each side.
A ball is launched straight up with a speed of 25.05 miles per hour. What is the maximum height reached in meters
A friend speeds by you in her spacecraft at a speed of 0.750 c. It is measured in your frame to be 4.60 meter long and 1.35 meter high. Find what will be its height at rest
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