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At its narrowest point the femur bone in the human leg resembles a hollow cylinder that has an outer radius of roughly 1.1 cm and an inner radius of just about 0.48 cm. Assuming that the ultimate strength of the bone is 1.7 ? 108 N/m2, how much force will be required to rupture it?
A point charge Q is located at the center of a very thin, spherical metal shell. what is the electric potential of the shell
A battery has an emf of 7.5 V and 16 A of current flows through it. What power is this battery supplying
Speedboat A negotiates a curve whose radius is 150 m. Speedboat B negotiates a curve whose radius is 190 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
In the above problem, if the radius of the circular loop expands to 1.0m in 2 seconds, calculate the EMF and the direction of the current in the loop
A physicist uses a cylindrical metal can 0.300m high and 0.070m in diameter to store liquid helium at 4.22 K; at that temperature the heat of vaporization of helium is 2.09×104J/kg. How much helium is lost per hour
X-rays having an energy of 250 keV undergo Compton scattering from a target. Find the Compton shift at this angle
A loudspeaker of mass 18.0 {rm kg} is suspended the distance of h = 1.20 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 2.70 {rm m}. What is the tension T in each of the cables? Utili..
A support strap is attached to the patient's ankle 13.0 from the bottom of his foot. Illustrate what weight is needed to support the leg horizontally?
Iced tea is made by adding ice to 2.4 kg of hot tea, initially at 70?C. How many kg of ice, initially at 0?C, are required to bring the mixture to 10?C? (Lf = 3.33×105 J/kg, cw = 4,186 J/kg•? C)
An Australian emu is running due east in a straight line at a speed of 12.5 m/s and slows down to a speed of 11.4 m/s in 7.3 s. (a) What is the direction of the bird's acceleration? north south east west.
W hat is the magnitude of an average force exerted on the superball by the sidewalk. what is force caused by the water on the bottom.
A 72 kg meteorite buries itself 5.0 m into soft mud. The force between the meteorite and the mud is given by , What was the speed of the meteorite
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