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A jeweler uses a draw plate to stretch a wire to three times its original length. Find by what factor does its resistance increase?
the distance between the slits in a young's experiment is 50times the wavelength of the monochromatic light source. Find theangle in radians at which the first bright occurs
A man pushes a lawn mower on a level lawn with a force of 215N. If 31% of this force is directed downward, and 50W of power is expanded in pushing the mower 5.8 m, how much time is spent in pushing the mower this distance?
Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed. The radius of the orbit is 4.41 × 10-11 m. Determine the magnitude..
A uniform disk of radius 0.463 m and unknown mass is constrained to rotate about a perpendicular axis through its center. Find the mass of the disk
A piece of sandston with a bulk volume of 1.3 cc is contained ina 5-cc cell filled with helium at 760 mm Hg. Temperature ismaintained constant and the cell is opened to another evacuatedcell the same volume.
Two capacitors are connected in parallel across the terminals of a battery. One has a capacitance of 2.5 uF, What is the voltage of the battery
The induced emf is a single loop of wire has a magnitude of 2.36 Vwhen the magnetic flux is changed from 0.912 T X m2 to0.233 T X m2. How much time is required for this changein flux?
Give me a very detailed exlanation of finding d Constraint relaion in strings and how do u find it do set a reference point
A wheel is rotating freely at angular speed 920 rev/min on a shaft whose rotational inertia is negligible. What fraction of the original rotational kinetic energy is lost
A penny is dropped form the observation deck of the empire state building (369m above the ground). With what velocity does it strike the ground
a hardworking ant must supply 0.00805 n to pull a small piece of fruit at constant velocity over a distance of 8.20 cm
a 3kg object oscillating on a spring with k 3000 nm has mechanical energy of .9 j. finda the amplitude of the motion.b
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