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You have a wheelbarrow whose front tire is inflated to a pressure of 20psi while the load od the wheelbarrow is 300 pounds. What is the "footprint" area of the tire if 2/3 of this load is supported by the tire? Answer in square inches.
A 70 kilogram trampoline artist jumps vertically upward from the top of a platform with a speed of 5.5 m/s. If the trampoline behaves like a spring of spring constant5.2 x 104 N/m, determine how far does he depress it
A jackhammer causes a sound intensity of 95 bB at a point where a person is standing. What is the sound intensity level at the position of the listener
Inside the cylinders of a diesel engine, the mixture of fuel and air is compressed to about 1/20 of its original volume. Though diesel engines have no spark plugs to ignite this mixture, it ignites anyway because...
How many moles of atoms are there in: (a) 28g of N_2; (b) 32 g of O_2; (c) 16 g of methane - CH_4; (d) 38 g of F_2?Balance this question: __Fe(s) + __ O_2(g) -> __ Fe_2O_3(s)
A farm boy studying physics believes that he can fit a 15.0m long pole into a 12.0m long barn if he runs fast enough, How does this fit with the idea that when he is running the barn looks even shorter to him than 12.0m
A block of mass 20kg is dropped into water. What force should be applied to pull it to the surface if its volume is 0.001m^3? Density of water is 1000.0kg/m^3
A tennis ball connected to a string is spun around in a vertical, circular path at a uniform speed. What is the magnitude of the tension in the string
If the heater is 71.3% efficient, how long would it take to heat 45.5gal of water from 20 degrees C to 60 degrees
A long, thin rod (length = 4.5 m) lies along the x axis, with its midpoint at the origin. find the magnitude of the net torque applied to the rod
The output stage of a high-fidelity amplifier has an internal impedance of 162 ohm. determine what must be the turns ratio of the output transformer for maximum power transfer
Two railroad tracks intersect at right angles at station O. At 10AM the train A, moving west with constant speed of 50 km/h, leaves the station O. Find minimum distance between these trains
You need to administer 125 mg of methylprednisolone (Solu-Medrol) IV push, bid to a patient with acute exacerbation of COPD.
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