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A worker uses a wheelbarrow to haul 225 lb of brick. The handlesare located 4.00 ft from the axle; the center of the load is 1.5 ftfrom the axle. What upward force does the worker exert to lift the handles of the wheelbarrow?
In an experiment designed to measure the strength of a uniform magnetic field produced by a set coils, What is the magnitude of the magnetic field
A refracting telescope is used to view the Moon (diameter 3480 km, distance from Earth 385,000 km). find the diameter of the image produced by the objective
Mary needs to row her boat across a 100-{rm m}-wide river that is flowing to the east at a speed of 1- {rm m/s}. Mary can row the boat with a speed of 2- {rm m/s} relative to the water.
An ideal gas undergoes the process a - b - c. Pa = pc = 200. kPa, Vb = Vc = 40.0x10-3m3, and Pb = 400.kPa. How much work is done by the system in this process
A 58 g tennis ball is served at 40 m/s. Find the de Broglie wavelength of the tennis ball
The maximum speed of a 3.5-kg mass attached to a spring is 0.67m/s , and the maximum force exerted on the mass is 11N. What is the amplitude of motion for this mass
A wide rectangular channel discharges 1.6 m3/sec per unit width. The slope is 0.001 and the manning's coefficient is 0.015. At a certain point the water depth is 0.75m. How far downstream will it be 0.73m. Use V.T.
At a soft drink dispenser, a restaurant patron put 0.2 kg of crushed water ice, at a temperature of ?5 C, into an insulating cup. [In fact, the ice was slightly colder before it left the machine, but its warming to ?5 C cooled the inside surface o..
a skateboarder starting from rest rolls down a 14.6-m ramp. when she arrives at the bottom of the ramp her speed is
suppose the apparatus as used in this lab: A cube of mass M = 500 g and side length 30 mm is free to spin on an axis through the center of one face. A massless pulley on this axis has a diameter of 2r = 10 mm. An object with m = 50 g is hung from ..
If the airplane somehow continues to fly as if nothing had happened, where is engine relative to the airplane at the moment the engine hits ground.
A banana has 0.45 g of potassium. 0.0117% of that potassium is 4019K, What is the activity of the banana
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