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When a 50-gram piece of aluminum at 100 degrees celsius is placed in water, it loses 735 calories of heat while cooling to 30 degrees celsius. Calculate the specific heat capacity of the aluminum.
ten megawatts of electricty is to be transmitted over a power line of resistance 4 ohms. At what current will the power be transmitted
Two 27.0 cm focal-length converging lenses are placed 16.5 cm apart. Where will the final image formed by the second lens be located
Determine the maximun wavelength of incident radiation that can be used to remove the remaining electron from a singly ionized helium atom He+ (z= 2)
A disk-shaped space station 175 m in diameter spins uniformly about an axis perpendicular to the plane of the disk through its center. How many rpm (rev/min) must this disk make
A transformer on a pole near a factory steps the voltage down from 3600 V (rms) to 120 V (rms). evaluate the current in the secondary
A diffraction grating with 300 lines per mm is used in an experiment to study the visible spectrum of a gas discharge tube. At what angle from the beam axis will the first order peak occur if the tube emits light with wavelength of 500.7 nm? At what ..
Consider two unknown point charges, Q1( on the left) and Q2 are separated by a distance, o.981m. Find the ratio Q2/Q1 in both magnitude and sign
If air resistance & other effects are ignored how far away did the shell hit.
A 10cm-diameter disk emits light uniformly from its surface. 20rm cm from this disk, along its axis, is an 8.0cm-diameter opaque black disk, What is the diameter of the completely dark part of this shadow
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.00 min, find the total vector displacement
a 3.000 u 1 u 931.5 mevc2 object moving to the right through a laboratory at 0.8c collides with a 4.000 u object
question the total angular momentum of a flywheel having a rotational inertia 0.0924 kg-m2 about its axis decreases
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