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The two components of a double star are observed to move in circles of radii r1 and r2. What is the ratio of their masses?
Hint: write down their accelerations in terms of the angular velocity of rotation, omega.
A woman has a mass of 59 kg, What is her weight on earth and What are her mass and her weight on the moon
what is the approximate yield strength of a copper silica alloy which has spherical precipitates of silica of average
A merry-go-round of radius 3.0 m, initially at rest, is givena constant tangential push for 1.5s. What is the angular displacement of the wheel between t=0 and t=4s
Consider a thin spherical shell with surface charge density σ = σoCosθ and radius R centered about the origin (x=y=z=0). Here σo is a constant.
Draw a circuit diagram of two 50 Ohm resistors identical lightbulbs in series across a power supply providing 12V. Use theequivalent resistance, Rs, of the two bulbs in series to find thecurrent flowing through the circuit. From current, calculate th..
Three charges are at rest on the z axis: q1 = ?7.21 mC at z = 4.58 m, q2 = ?1.79 mC at z = 0 m, What is the potential energy of this system
A 3.0cm x 3.0cm parallel-plate capacitor has 3.0mm spacing. The electric field strength inside the capacitor is 1.1 x 105 V/m. How much charge is on each plate
A gun shoots bullets that leave the muzzle with a speed of 336 m/s. If a bullet is to hit a target 136 m away at the level of the muzzle, the gun has to be aimed at a point above the target. How far above the target is this point.
Two cars collide head on while each is traveling at 90. What is the temperature increase of each car
A projectile is fired with an initial velocity of 20 m/s at 50° above horizontal. At the projectile's highest point, what is its velocity?.What is its acceleration?
Determine the rotor speed of a shredder. The shredder's motor inertia is 75000 lb-ft2, starting time is 30 s, and power is 80kW
A playground ride consits of a disk of mass M = 47kg and radius R = 1.6 m mounted on a low friction axle. A child of mass m = 18kg runs at speed v =2.7 m/s on a tangential to the disk and jumps onto the outer edge of the disk.
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