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A boat in a storm is subject to a force of 1750 N at 0.00 degrees and 1640 N at 145 degrees. How much of a third force and in what direction must be exerted to make the net force zero?
A vertical cylindrical tank contains 1.80 mol of an ideal gas under a pressure of 1.00 atm at 20.0oC. how tall is the column of gas that is supporting the piston
A 50.0g silver spoon at 20.0c is placed in a cup of coffee at 90 c. How much heat does spoon absorb from the coffee to reach a temperature of 89c.
Two teams of nine members each engage in a tug of war. The first team's members have average masses of 73 kg, What is the acceleration of the two teams
A krypton laser produces a cylindrical red laser beam 2.0 in diameter with 5.0 of power. What is the light intensity on a wall 2.2 away from the laser
A sudent of mass m = 49 kg wants to measure the mass of a playground merry-go-round, which consists of a solid metal disk of radius R = 1.5 m that is mounted in a horizontal position on a low-friction axle. She tries an experiment:
A Styrofoam bucket of negligible mass contains 1.75 of water and 0.450 of ice. More ice, from a refrigerator at -14.0, is added to the mixture in the bucket, what mass of ice was added
what is the magnitude of the force between the two charges. The scale of vertical axis is set by vs = 5.10 m/s. What is the coefficient of kinetic friction between block and floor.
In a car lift, compressed air with a gauge pressure of 4.0 × 10^5 Pa is used to raise a piston with a circular cross-sectional area. what is the maximum mass that can be raised using this piston
An ambulance traveling at 47 m/s approaches a car heading in the same direction at a speed of 31 m/s. At what frequency does the driver of the car hear the siren
Arranged on the floor are five concrete blocks, each 28.4kg and 0.265m tall. What is the minimum work required to stack all five vertically
A 0.410 kg pendulum bob passes through the lowest part of its path at a speed of 3.13 m/s. What is the tension in the pendulum cable at this point if the pendulum is 76.2 cm long.
A radio station is allowed to broadcast at an average power not to exceed 26 kW. estimate how many kilometers away you might be able to hear this station
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