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A window washers scaffold 12.0 feet long and weighting 75.0 lb is suspended from each end. One washer weights 155 lb and is 3.00 feet from one end. The other washer is 4.00 feet from the other end. If the force supported by the end near the first washer is 200 lb, calculate how much does the second washer weight?
An infinitely long line of charge has linear charge density 5.00×10?12C/m. Calculate the protons initial kinetic energy
In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles, What is the magnitude of Betty's force
A motorist drives north for 36.0 minutes at 67.0 km/h and then stops for 15.0 minutes. He then continues north, traveling 130 km in 2.00 h. What is his total displacement
a fence post is 46.0m from where you are standing in a direction 39.0 degree north of east. a second fence post is due
An open flask sitting in a lab fridge looks empty, but we know that actually it is filled with a mixture of gasses called air. how many gas molecules does the flask contain
A system gains 3690 J of heat at a constant pressure of 1.27× 105 Pa, and its internal energy increases by4100 J. What is the change in the volume of the system
A wire in the shape of a square has sides of 35 cm and a resistance of 8 ohms. the wire is being pulled out of a uniform magnetic field, B=650mT at a speed of 50cm/s. How much force does it take to pull the wire if the speed remains constant.
A space traveller weighs herself on Earth, at a location where the acceleration due to gravity is 9.82 m/s2, and finds a value of 571 N. What is the traveller\'s mass on the planet
What is the magnitude of the induced electric field 0.2070cm from the axis of the solenoid? Give your reply in Volts/meter in scientific notation to three significant digits.
A large steam pipe is covered with 1.3-cm-thick insulating material of thermal conductivity 0.25 J/(s m °C). How much energy is lost every second
When water is boiled under a pressure of 2.00 atm, the heat of vaporization is 2.20 106 J/kg and the boiling point is 120°C. Compute the increase in internal energy of the water
A 30 gram particle undergoes SHM with amplitude of 2.0 mm and a maximum acceleration of magnitude2.0 multiplied by103 m/s2, and an unknown phase constant, Estimate what is the maximum speed of the particle
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