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Problem: A house painter uses the chair and pulley arrangement of the figure to lift himself up the side of a house. The painter's mass is 65kg and the chair's mass is 9.0kg.
Part A: With what force must he pull down on the rope in order to accelerate upward at 0.18m/s2?
I want help to find with what force he must pull down on the rope.
A proton of charge Q = 1.6x10-19 C and mass m = 1.67 x 10-27 kg is accelerated from rest through a potential difference of 3340 V. What is the final speed of the proton
A pot of water is located in a garage to keep the garage from getting to cold when the weather forecast calls for subfreezing temperatures. Find how long must a standard 1.5 kW heater run to put as much heat into the garage as the water would transf..
Light consisting of two wavelengths 500 and 520nm, is incident normally on a plane diffraction grating with d=1?. Find the linear separation of the two first-order principal maxima
the index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660. a beam of white
A student places her 350 g physics book on a frictionless table. She pushes the book against a spring, compressing the spring by 4.0 cm, What is the book's speed as it slides away
If the plant produces electric energy at the rate of 1.3GW , how much exhaust heat is discharged per hour
Tarzan spies a 40kg chimpanzee in severe danger, so he swings to the rescue. He adjusts his strong, but very light, What are the frequency of Tarzan's swing
A steel wire of length 1.97 with circular cross section must stretch no more than 0.260 when a tensile (stretching) force of 400 is applied to each end of the wire. What is the minimum diameter necessary.
A regulation soccer field for international play is a rectangle with a length between 90.0m and 111mand a width between 57.0m and 70.0m
You want to support a sheet of fireproof paper horizontally using only a vertical upward beam of light spread uniformly over the sheet. There is no other light on this paper. The sheet measures 22.0cm by 28.0 cm and has a mass of 1.50g.
a rugby player runs with the ball directly toward his opponents goal along the positive direction of an x axis. he can
A circular wire loop whose radius is 15.0 cm carries current of 2.50 A. What torque acts on the loop
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