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A thin circular hoop of mass 1.00 kg and radius 2.00 m is rotating round an axis during its center a perpendicular to its plane. It is slowing down at the rate of 7.00 rad/s2. What is the net torque acting on the hoop?
If a 2-mm diameter pellet is illuminated from the left and the right by laser beams, such with a diameter of 1 cm and a power of 1 megawatt, estime the pressure applied to the pellet, assume all the light that hits the pellet is absorbed.
A 50kg woman is in a rotor with a 2m radius, laying against theinner surface. The friction between the woman’s sweater andthe surface is μs = 0.5.
A projectile is launched with a speed of 18m/s at an angle of 65 degrees to the horizontal. What is the maximum range of the projectile
An unstable elementary particle comes in two varieties, one with positive and one with negative electric charge, What is the difference (R+)-(R-) between the two rates, with its error
A football is kicked at ground level with a speed of at an angle of 35.0º to the horizontal. How much later does it hit the ground
Daisy throws a rock horizontally with a speed of 12 m/s from a bridge. It falls 2.28 s before reaching the water below. When the rock hits the water it is traveling with what horizontal component of the velocity.
what is the force of kinetic friction acting on the skier. avoid the length of her car and her reaction time.
After our Sun exhausts its nuclear fuel, its ultimate fate may be to collapse to a white dwarf state, Calculate the free-fall acceleration at its surface
We wish to design an ac generator using an armature on which is wound a flat tight rectangular coil (8.00 cm x 20.0 cm) of 150 turns. Find what angular speed should the coil turn
A copper-constantan thermocouple generates a voltage of 4.55 10-3 volts when the temperature of the hot junction is 103.4° C, what is the temperature of the hot junction when the voltage is 1.94 10-3 volts
What is the magnification of an astronomical telescope whose objective lens has a focal length of 80 cm and whose eyepiece has a focal length of 2.3 cm? What is the overall length of the telescope when adjusted for a relaxed eye?
A solid disk of radius R and mass 2.72 kg is spinning at angular velocity 63.9 rpm about a vertical axis. What is the mass of the second disk
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