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A man wants to push a package of shingles of total mass 36 kg up a roof being built at an angle of 35o to the horizontal. The coefficient of kinetic friction between the package and the roofing paper already in place is 0.30.
(a) How much force does the man have to exert on the package directly along the slope of the roof to cause the package to accelerate at 0.1 m/s2?
(b) What is the minimum coefficient of static friction needed so that the package will not slide when it is left at rest on the roof?
Three objects are held in place on three corners of a square, with sides of length 1.10 m. Find the electric potential at the fourth corner of the square
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heres a basketball problem a 80.2 kg basketball player is running in the positive direction at 7.4 ms. she is met
a man scientist decides to build a machine that will use a 0.5 tesla magnetic field to make electrons charge 1.6 x
A child is in danger of drowning in the Merimac river. The Merimac river has a current of 3.1 km/hr to the east, How far from the dock does the boat reach the child
One cylinder in the diesel engine of a truck has an initial volume of 600 cm3. Air is admitted to the cylinder at 30 0C and a pressure of 1.0 atm. The piston rod then does 400 J of work to rapidly compress the air. What are its final temperature and ..
A 6.0 V battery is connected in series with a 29 mH inductor, a 110 ohm resistor, and an open switch. How much energy is stored in the inductor
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a projectile is fired at angle of 30 from the horizontal with an initial velocity of 55 ms. find.1. the horizontal
There is a current I flowing in a clockwise direction in a squareloop of wire that is in the plane of the paper. If the magnetic field B is toward the right,and if each side of the loop has length L, then the net magnetic force acting on the loopis..
Water drips from the nozzle of a shower onto the floor 235 cm below. The drops fall at regular (equal) intervals of time, the first drop striking the floor at the instant the fourth drop begins to fall. Find the location of the third drop as measured..
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