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A 12-pack of Omni-Cola (mass 4.30 kg) is initially at rest on a horizontal floor. It is then pushed in a straight line for 1.20 m by a trained dog that exerts a horizontal force with magnitude 36.0 N. Use the work-energy' theorem to find the final speed of the 12-pack if
(a) There is no friction between the 12-pack and the floor, and
(b) The coefficient of kinetic friction between the l2-pack and the floor is 0.30.
The resistor is connected in series with total set of lightbulbs. What is the value of the resistance? What is the power loss in the resistor.
Suppose the three particles in the figure have the same mass and speed. Rank the particles in order of decreasing magnitude of their charge. Additional info. the three particles are a b and c, each are rays. they are set up on a grid of circles th..
The balance wheel of a watch oscillates with an angular amplitude of ? rad and a period of 0.830 s. Find the maximum angular speed of the wheel
A current of 0.80A flows through a copper wire 0.50mm in diameter, How long is the wire in km
In a game of basketball, a forward makes a bounce pass to the center. What horizontal distance does the ball cover before bouncing
A man stands on a frictionless platform that is rotating with an angular speed of 3.3 rad/s; his arms are outstretched and he holds a weight in each hand. find the change of the kinetic energy when the man moves his arms
A circular coil with 79 turns of wire and a diameter of 18 cm is placed in a magnetic field given by B(t) = 5 t2 + 2 t + 3 T where t is time in seconds. The field is perpendicular to the plane of the coil. What is the induced EMF at t = 7 s?
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
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. What is the moment of inertia of the wheel
How to find out the tension in the cable
A robot probe drops a camera off the rim of the 389 m high cliff on Mars, where the free fall acceleration is 3.7 m/s^2. Find out velocity with which it hits the ground and the time required for it to reach the ground.
The energy gap in silicon is 1.1eV. The average electron effective mass is 0.31m, where m is free electron mass. Calculate the electron concentration in the conduction band of silicon at T=300K
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