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A block of mass 2.89 kg is pushed 2.20 m along a frictionless horizontal table by a constant 13.0 N force directed 23.0° below the horizontal. Determine the work done on the block by each of the following forces.
(a) the applied force
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(b) the normal force exerted by the table
(c) the gravitational force
(d) Determine the total work done on the block.
A 418 Hz sound wave travels through a substance. The wavelength of the sound wave is measured to be 1.7 meters
The graphite in a pencil has a resistivity of 7.84×10^?6 W*m. The graphite's diameter is 0.700 mm and its length is 40.0 mm. Find the resistance of this graphite "wire."
A 0.16-kg ball on a stick is whirled on a vertical circle at a constant speed. Find the tension in the stick
A sea-going prirate's telescope expands to a full length of 29 cm and has an objective lens with a focal length of 26.9 cm. What is the focal length of the eye piece
In a serve, a tennis player hits the ball horizontally. Neglect the effects of air resistance and the diameter of the ball. Where will the ball land if it just clears the net
A copper block is removed from a 306?C oven and dropped into 1.00kg of water at 20.1?C. What is the mass of the copper block
question1a diver springs upward from a board that is 2.85 meters above the water. at an instant she contacts the water
Calculate the percent reflection loss when a beam of radiation passes from air through a plate back into air assuming that the plate has a refractive index of 1.45
A laboratory electromagnet produces a magnetic field of magnitude 1.38 T. A proton moves through this field with a speed of 6.06 multiply.gif 106 m/s. find the magnitude of the maximum acceleration of the proton
A proton moving at 3.6*10^5m/s to the right enters a region where a uniform electric field of magnitude 60kN/C points to the left
Sodium ions (Na+) move at 0.841 m/s through a bloodstream in the arm of a person standing near a large magnet. what would be the magnetic force on the arm
A large boat with a weight of 70000 tons moves at constant speed due west. What is the net force on the boat
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