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A hollow sphere of inner radius 8.0cm and outer radius 9.0cmfloats half -submerged in a liquid of density 800kg/m3
(a) What is the mass of the sphere?
(b) calculate the density of the material of which the sphere is made.
A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 550 kg. Find the kinetic energy stored in the flywheel
A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 6.22 m/s relative to the ground. How fast is the train moving
A 10.3 kg block is dragged over a rough, horizontal surface by a 63.6 N force acting at 21° above the horizontal. Find the total change in the block's kinetic energy
unpolarized light with an intensity Io=16 W/m2 is incident on a pair of polarizers. what is the intensity of light transmitted through the first and second polarizer
The counterbalance w1 weighs 100 N. Find out the weight w2 and the angle α needed so that no force is exerted on the hip joint by the leg plus cast.
Assume that the rod is held at rest horizontally and then released. (Throughout the remainder of this problem, your answer may include the symbol, moment of inertia of the assembly, whether or not you have answered the first part correctly.)
A group of students are camping in the middle of the forest on a very dark night. Their torch batteries went flat hours ago. find the speed of the unidentified noisy object
A small ball with a mass of 0.06 kg moves along a circular orbit with a radius of 0.5 m at a speed of 3.0 m/s. What is the angular momentum of the ball
An AC voltage with an amplitude of 112 V is applied to a series combination of a 203 ?F capacitor, a 110 mH inductor, and a 21.5 ? resistor. Calculate the power dissipated by the circuit at a frequency of 60.0 Hz
A satellite is in a circular orbit about the earth (ME = 5.98 1024 kg). The period of the satellite is 2.40 104 s. What is the speed at which the satellite travels?
A 2.50 x 10^-6 F capacitor is charged to 754V and a 6.80 x 10^-6 F capacitor is charged to 563V, Determine the potential difference across the second capacitor
A huge explosion is heard 77.7 miles away. How long does it take the sound to travel that far
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