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1. A claw hammer is used to pull a nail out of a board. The nail is at a 60 degree angle of to the board, and a force F1 of magnitude 500N applied to the nail is required to pull it from the board. The hammer head contacts the board at point A, which is 0.080m from where the nail enters the board. A horizontal force F2 is applied to the hammer handle at a distance of 0.300m above the board. What magnitude of force F2 is required to apply the required 500N force (F1) to the nail? (You can ignore the weight of the hammer.)
2. In the figure what is the magnitude of the net gravitational force exerted on the 0.100-kg uniform sphere by the other two uniform spheres? The centers of all three spheres are on the same line. In the figure what is the direction of the net gravitational force exerted on the 0.100-kg uniform sphere by the other two uniform spheres?According to Newton's third law, does the 0.100-kg sphere exert forces of the same magnitude as your answer the first question, but opposite direction, on each of the other two spheres?
3. A particle of mass 3k is located 1.80m from a particle of mass k. Where should you put a third mass K so that the net gravitational force on K due to the two masses is exactly zero.
A 64.0 kilogram man stands on a lightweight diving board supported by two pillars, one at the end of the board, Evaluate the magnitude of the force exerted by the second pillar
A police car is traveling east at 39.5 m/s along a straight road, overtaking a car ahead of it moving east at 32.0 m/s. What is the wavelength in front of the police car
Starting from rest, a 40 kg body reaches a speed of 8.0m/s in 2s. Calculate the force acting on the body?
One 20-year-old twin brother takes a space trip with a speed of 0.80c for 30 years according to a clock on the spaceship, what is his own age and the age of the Earth-based twin brother
A point charge, q1 = +2C, is placed at the origin (0m,0m), a second point charge, q2 = -3C, is located at (2m, 0m), and a third point charge, q3 = -4C, is located at (0m, 3m)
Oil (S ¼ 0.92) is pumped from a storage tank and discharges into a reservoir through a pipe whose length is L ¼ 550 m and diameter is D ¼ 350 mm. The pump efficiency is Z ¼ 80% and its power output is WW_ P ¼ 10 kW.
In an industrial cooling process, water is circulated during a system. If the water is pumped with a speed of 0.45m/sunder a pressure of 400 to rr from the first floor through a 6.0 cm diameter pipe, what will be the pressure on the next floor 4.0 m ..
What is rms speed of the atoms at temperature
The fiscal year of cramer company ends on december 31. Explain how much interest expense will cramer company report in its december 31, 2011 income statement?
A molecule of DNA (deoxyribonucleic acid) is 2.33 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. Determine the effective spring constant of the molecule
A fission-based nuclear bomb (such as those used in World War II) uses the same nuclear reactions, What is the average power Pavg of such a nuclear bomb
A runner of mass m = 39kg and running at 3.1m/s runs as shown and jumps on the rim of a playground merry-go-round which has a moment of inertia of 372 kg•m2 and the radius of 2 meters. Assume the merry-go-round is initially at rest, what is its final..
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