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A 10 kg block is pushed against a vertical wall by a horizontal force of 100N . The coefficient of static friction is .60 and the coefficient of kinetic friction is .4. what is true if the block is initially at rest?
A capacitor with air between its plates is charged to 130 V and then disconnected from the battery. Whena piece of glass is placed between the plates, the voltage acrossthe capacitor drops to 25 V. What is the dielectric constant of the glass?
Two coils are close to each other. The first coil carries a current given by I(t) = 4.70 e%u22120.025 0tsin(120%u03C0t), What is the mutual inductance of the coils
A horizontal force of magnitude 36.4 N pushes a block of mass3.81 kg across a floor where the coefficient of kinetic friction is0.640. What is the increase in the kineticenergy of the block
A bicycle wheel has a mass of 1.5 kg and a radius of 0.3 m. Ignore the mass of the spokes of the wheel. What is the angular velocity and the tangential velocity of the wheel after 4.0 sec
A 0.21-kg coffee mug is made from a material that has a specific heat capacity of 900 J/(kg · C°) and contains 0.36 kg of water. determine the minimum power rating of this heater
if a home operates on an average of 1.1 kw electricity how many fuel pellets of uranium dioxide uo2 are required to
On a pleasure cruise a boat is traveling relative to the water at a speed of 4.94 m/s due south. find the magnitude of the passenger's velocity relative to the water
In the typical X-ray lamp. The electrons are accelearated in the potential difference of 10000V before hitting the water cooled electrode. Find the shortest wavelength of X-rays produced in this lamp.
Two particles are moving along the x axis. Particle 1 has a mass m1 and a velocity v1 = +3.7 m/s. Find the ratio m1/m2 of the masses of the particles
four charges q=4nC form a square, 20 cm on a side. what is the potential of electric field at the center of the square
A particle of mass 4.47 × 10?27 kg, moving at 9.46 × 105 m/s, strikes an identical particle which is initially at rest. What are the final speeds of the particles
70 grams of water at 85°C are mixed with an equal amount of water at 15°C in a completely insulated container. How much heat is gained by the cold water
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