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A long stick has a mass of 0.5 kilogram and a radius of gyration of 4.1 meter. A barbell has a mass of 9 kilogram, and a radius of gyration of 0.3 meter. Find which is harder to swing in a circle, the long stick or the barbell?
a rod of length l0 moves iwth a speed v along the horizontal direction. the rod makes an angle of theta0 with respect
A hoop and a disk, both of 0.70- m radius and 5.0- kg mass, are released from the top of an inclined plane 3.0 m high and 8.2 m long. What is the speed of the hoop
Orb spiders make silk with a typical diameter of 0.15 .A typical large orb spider has a mass of 0.50. If this spider suspends itself from a single 12-cm-long strand of silk, by how much will the silk stretch
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -42 µC. by how much does her mass increase
Two large identical flat metal plates are placed parallel to one another, seperated by a small distance compared to their linear size. One plate is given a charge per unit area 1.80E-5 C/m2 and the other a charge per unit area -1.80E-5 C/m2. Using..
a string is wrapped many times around a pulley and is connected to a block with mb 4.601 kg that is hanging
Two bumper cars on a park ride collide elastically as oneapproaches from the rear. One had a mass of m1 = 437 kgand the other m2 = 538 kg, Calculate the change in momntum of the heavier car
A 50-cm-thick layer of oil floats on a 120-cm-thick layer of water. What is the pressure at the bottom of the water layer
A parallel-plate air capacitor of area 15 cm2 and plate separation 2 millimeter is charged by a battery to a voltage 60.0 V. find how much additional charge will flow from battery onto the positive plate
The variable capacitor in the tuner of an AM radio has a capacitance of 2820pF when the radio is tuned to a station at 571kHz. What must the capacitance be for a station
A space probe is fired as a projectile from the Earth's surface with an initial speed of 1.78 x 10^4 m/s. What will its speed be when it is very far from the Earth
A boy catches - with bare hands and his arm extended - a 0.16 kg baseball coming directly toward him ar a speed of 25 m/s. what is the average force the boy's hand feel while catching the ball
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