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A block of wood with volume V floats in water with 0.70V submerged. In oil the block floats with 0.85V of its volume submerged.
(a) Find the density of the wood.
(b) Find the density of the oil.
A 55 kg block of ice slides down a frictionless ramp that is 2.0 m long and 0.91 m high. Find the force exerted by the worker
You are designing the section of a roller coaster ride shown in the figure. Previous sections of the ride give the train a speed of 11.9 m/s at the top of the incline, compute the minimum radius you can use for the vertical loop?
A block slides upward on a rough, vertical wall at constant velocity when a force F of 60 N acts on it at an angle ? = 60? to the horizontal. Determine the force of kinetic friction on the block
A 70 pF capacitor and a 280 pF capacitor are both charged to 3.6 kV. They are then disconnected from the voltage source and are connected together, Find the energy lost when the connections are made
An air-filled spherical capacitor is constructed with an inner-shell radius of6.50cm and an outer-shell radius of15.0cm. What potential difference between the spheres results in a 4.00-µC charge on the capacitor
A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. What impulse was given to the ball by the floor
Consider the crates in the figure where m1 = 45 kg and m2 = 12 kg. Assume that there is no friction between m1 and the table, Write Newton's second law for motion along both coordinate directions
An unknown nucleus has twice the volume of a nucleus with 51 nucleons. What is the atomic mass number of the unknown nucleus
A dipole is centered at the origin and has charges q and -q located at z=l/2 and z=-l/2, respectively. Find the electric field at position r along the z axis and also at position r along the x-axis
An RL series circuit has R = 72.0? and L = 2.20mH . The series combination is connected across a 155V (rms), 58Hz power supply. Find the impedance of the RL combination
you are outside tossing a football with your friends. you throw the football at an angle of 52.3deg above the
The tires of a car make 58 revolutions as the car reduces its speed uniformly from 91km/h to 36km/h . The tires have a diameter of 0.84m. how much more time is required for it to stop
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