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A chair of weight 100 Newton lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 45.0 N directed at an angle of 41.0 degree below the horizontal and the chair slides along the floor. Using Newton's laws, Find the magnitude of the normal force that the floor exerts on the chair.
Two parallel plate capacitors of area A = .002m^2 each, and plates separations of 5.00 mm, 8.85mm and are connected in parallel and then connected to a 120 volts battery. Find the total energy stored in the capacitors
The velocity of the transverse waves produced by an earthquake is 6.93 km/s, while that of the longitudinal waves is 11.3652 km/s. How far away was the earthquake
A person is making homemade ice cream. She exerts a force ofmagnitude 16 N on the free end of thecrank handle, and this end moves in a circular path of radius0.26 m. The force is always appliedparallel to the motion of the handle. If the handle is..
two cylindrical resistors are made of the same material. the resistors with resistance r1 and r2 have different radii
an air-filled lead balloon of radius r is totally submerged in a tank of water. a show that the thickness of the skin
A particular heat engine has a useful power output of 4.40 kW and an efficiency of 30.0%. The engine expels 7200 J of exhaust energy in each cycle. Find the energy taken in during each cycle
A mass spectrometer is used to examine the isotopes of uranium. Ions in the beam emerge from the velocity selector at a speed of 3.02 105 m/s and enter a uniform magnetic field of 0.625 T directed perpendicularly to the velocity of the ions.
A ball is thrown straight upward and returns to the thrower's hand after 2.50 s in the air. At what speed must the second ball be thrown
Coherent light with wavelength 603 passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 from the slits.
The resistance of a bagel toaster is 18 . To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster
an air-filled parallel plate capacitor with a plate spacing of 1.20 cm has a capacitance of 4.20 uf. the plate spacing
Consider an object that is hot enough to glow violet blue (a peak frequency of 7.5 x 1014 Hz). What is the temperature of this object
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