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An aluminum tape measure is accurate at 20o C. If the tape measure is placed in a deep freeze at -5.0o C, what would be the tape measure's percentage error because of thermal contraction? Would it read high or low?
A mass attached to a spring vibrates 15 times in 23.13 seconds. What is the linear frequency (in Hertz) of the mass
a 300g ball is tied to a string. it is pulled to an angle of 4.00 degrees and released to swing as a pendulum. a
An 18.0 g rifle bullet travelling 245 m/s buries itself in a 3.50 kg pendulum hanging on a 3.00 m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of the pendulum's displacement.
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 20.0 cm, Find the electric field just inside and just outside the paint layer
A camera lens has a focal length of 215 mm, How far from the lens should the subject for the photo be if the lens is 21.9 cm from the film
you stand at the center of a carousel spinning at rate w. you throw a ball horizontally with some velocity xdot from
A solenoid is to be constructed that will have a resistance of 5.00 ohms and produce a magnetic field of 0.0400 T at its center when it carries a current of 4.00 A. The solenoid will be made of wire that is 0.500 mm in diameter and have a radius that..
Cowboy joe wishes to shoot his assaiat by ricocheting a bullet off a mirrored metal plate. To do so, must he simply aim at the mirrored image of his assaiant? Explain.
The altitude of a hang glider is increasing at a rate of 6.79 m/s. At the same time, Calculate the magnitude of the glider's velocity
a heat pump has a coefficient of performance equal to 4.35 and requires a power of 1.77 kw to operate.a how much energy
A 20.0cm -diameter cylinder of helium gas is 50.0cm long and at 30.0 ?C. The pressure gauge reads 130psi, How many helium atoms are in the cylinder
Considering the equation for heat transfer through a wall, describe two simple ways to modify ahome to decrease the rate at which heat is lost through the walls.
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