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A rectangular block of mass M has a hemispherical cavity of radius a carved out on its upper surface. A particle of mass m can slide on the frictionless hemispherical surface of this large block, which rests on a horizontal surface with static friction coefficient s. Compute the minimum value of static friction coefficient thus that the block will not move if the particle is released from the edge of the carved surface.
An oil layer floats on 85 cm of water in a tank. The absolute pressure at the bottom of the tank is 112.0 kPa. How thick is the oil
A super ball, made of rubblerlike plastic, is thrown against a hard smooth wall. What is the magnitude of the impulse delivered by the wall
An RC circuit contains a resistor of value R = 430 ? and a capacitor with C = 0.05 F. how long would it take to discharge the capacitor to 15% of V1
Incident light in air impinges on a diamond. If the angle ofthe incident ray is 60° from the normal find the angles of the reflected and refracted rays. The speed oflight in a diamond is 1.23932x108 m/s.
A sample of dry air has a temperature of 300 K, a volume of 3 liters and a pressure of 4 atmospheres. The air then undergoes the following changes: (a) it is warmed under a constant pressure to 500 K, (b) it is cooled under constant volume to 250 ..
A resistor is constructed by forming a material of resistivity 3.5x10^5 into the shape of a hollow cylinder of length 4.0 cm and inner and outer radii of 0.50cm and 1.2cm, respectively. Find the resistance of the cylinder
A certain fluid has a density of 1080 kg/m3 and is observed to rise to a height of 1.8 cm in a 1.0-mm-diameter tube. Calculate the surface tension of the fluid
A 1.6-kg book is at rest on a wooden board inclined at 12 degrees. Find the magnitude of each force
The earth has a radius of approximately 6400 km. how fast would it have to travel
A 75 kg patient swallows a 30 micro Ci beta emitter wtih a half life of 5 days. The beta partiles are emitted with an average energy of .35MeV. What dose equivalent does the patient recieve
Then, a thin conducting wire connects the spheres, redistributing the charge on each sphere. When the wire is removed the spheres still repel but with a force of F2 = 0.100 N. Using this information, find the initial charge on each sphere, q1 and ..
A comet with a mass of 7.75 1011 kg strikes Earth at a speed of 26 km/s. Find the kinetic energy of the comet in joules
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