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a 50-g piece of copper is to be formed into a wire of radius 15 mm at a temperature of 40degc what is the resistance of
a small disk not sphere of radius a and charge q is concentric with larger disk connected to a thin ring of radius b
a resistor is made on a disk allowing current to flow radially from its center to the outside the center of the disk is
a boat crosses a river with constant velocity with respect to the water v03 ms the boatu2019s velocity is directed
weve seen that fish can control their buoyancy through the use of a swim bladder a gas-filled organ inside the body you
a 50000 locomotive with steel wheels is traveling at 70 on steel rails when its engine and brakes both failpart a how
a 60 skydiver can be modeled as a rectangular box with dimensions 21 41 18part a what is his terminal speed if he falls
a 1100 car traveling at a speed of 23 skids to a halt on wet concrete where 040part a how long are the skid
in a head-on collision a car stops in 016 from a speed of 28 the driver has a mass of 78 and is fortunately tightly
a cylinder contains a mixture of helium and argon gas in equilibrium at a temperature of 208 c boltzmanns constant is
a spring-loaded gun fired vertically shoots a marble 92 straight up in the airpart a what is the marbles range if it is
the longest recorded pass in an nfl game traveled 83 yards in the air from the quarterback to the receiverpart a
an electron moves with a speed of 80 times 106 ms along the -axis it enters a region where there is a magnetic field of
three fire hoses are connected to a fire hydrant each hose has a radius of 0014 m water enters the hydrant through an
a gold prospector finds a solid rock that is composed solely of quartz and gold the mass and volume of the rock are
testing tennis balls tennis balls are tested by being dropped from a height of 25m onto a concrete floor the 57g ball
two wheels are free to spin about the same axle the moment of inertia of wheel 1 is 216 kg m2 and the moment of inertia
a charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 150 giving it
a ball is dropped from rest from the top of a 635-m-tall building falls straight downward collides in-elastically with
two spherical objects with a mass of 526 kg each are placed at a distance of 395 m apart how many electrons need to
a field mouse trying to escape a hawk runs east for 40 darts southeast for 30 then drops 050 down a hole into its
you go to the playground and slide down the slide a 30 meter long ramp at an angle of 36 degrees with respect to
on a touchdown attempt a 950 kg running back runs toward the end zone at 375 ms a 111 kg linebacker moving at 410 ms
what is the wavelength of sound if it has a wavespeed of 136 ms and a frequency that is 669 hz the unit of measure for
teeing off a golf club has a lightweight flexible shaft with a heavy block of wood or metal called the head of the club