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an aluminum rod is 18.5 cm long at 20 C and has a mass of 350g. if 15000 J of energy is added to the rod by heat, what is the change in lenghth of the rod?
An electric dipole consisting of charges of magnitude 3.90 nC separated by 7.10µm is in an electric field of strength 1350 N/C. What is the magnitude of the electricdipole moment?
a small negatively charged particle has a charge of 1.33e-6 c and a mass of 8 mg. it moves from point a where the
A cannon fires up at an angle of 30 degrees above the horzontal with a muzzle velocity of 40 m/s. How far from the base of the wall dos the cannon ball travel
q1. a spring with a spring constant of 2.0 times 102 nm is attached to a 1.7 kg mass and then set in motion. what is
A platinum resistance thermometer has resistances of 220.0 when placed in a 0°C ice bath, What is the melting point of this substance
An emphysema patient is breathing pure O2 through a face mask. how long will the cylinder last
Two particles each have a mass of 7.1 x 10-4 kg. One has a charge of +6.7 x 10-6 C, and the other has a charge of -6.7 x 10-6 C. How fast is each particle moving when the separation between them is one-half its initial value
In February 1955, a paratrooper fell 370 m from an airplane without being able to open his chute but happened to land in snow, find the magnitude of the impulse on him from the snow
Coil 1 has L1 = 47 mH and N1 = 104 turns. Coil 2 has L2 = 68 mH and N2 = 215 turns. what mutually induced emf appears in that coil
An electrical engineer constructs a cylindrical solenoid of area 6 cm2 and length 20 cm from 160 m of thin wire. How much energy can the inductor store
A 13 g bullet traveling 230 m/s penetrates a 2.0 kg block of wood and emerges going 170 m/s. how fast does it move after the bullet emerges
If an average frequency emitted by a 200,-,rm W light bulb is 5.00 times 10^{14} , {rm Hz}, and 10.0 percent of the input power is emitted as visible light, approximately how many visible-light photons are emitted per second .
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