Absolute value of the horizontal force
In a tug-of-war between two athletes, each pulls on the rope with a force of 546 N. What is the tension in the rope? What is the absolute value of the horizontal force that each athlete exert against the ground?
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A skier of mass 66 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him 75 m up a 30° slope (assumed frictionless) at a constant speed of 2.1 m/s?
How many grams of water must be added to 519.5 grams of methanol (CH3OH) at 20°C to have an osmotic pressure of 408 mm of Hg? Methanol has a density of 0.8921 g/mL.
Consider how important is it to have patient information readily available in the medical office for the providers?
A sports car crosses the bottom of a valley with a radius of curvature equal to 80 {rm m}. At the very bottom, the normal force on the driver is twice his weight. At what speed is the car traveling?
A wad of wet putty of mass 0.020 kg drops vertically onto the record from above and sticks to the edge of the record. What is the angular speed of the record immediately after the putty sticks to it.
A refrigerator has a coefficient of performance of 4. If the refrigerator absorbs 30 cal of heat from the cold reservoir in each cycle, what is the heat expelled (in cal) into the heat reservoir ?
How different are migration patterns for post 2nd world war period compared to before the war? Discuss.
A dipole with dipole moment 1.6 is oriented at 31 to a 5.0 electric field. What is the magnitude of the torque on the dipole?
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