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A planet of mass m = 1.15 × 10^24 kg is orbiting in a circular path a star of mass M = 1.65 × 10^29 kg. The radius of the orbit is R = 2.85 × 10^7 km. What is the orbital period (in earth days) of the planet Tplanet?
A 4m long wire with thickness 5mm carries a current 0.4 A. A second identical wire of equal length and thickness is parallel and carries 0.6 A in the same direction. What is the force of the first wire on the second wire
If an object is 30 cm in front of a convex mirror that has a focal length of 60 m, how far behind the mirror will the image appear to an observer? How tall will the image be?
A) Assuming that the Styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat of the metal? B) Which is more useful for storing heat, this metal or an equal weight of water? defin..
Blocks with masses of 2 , 4 , and 6 are lined up in a row on the frictionless table. All three are pushed forward by a 56 force applied to the 2 block. How much force does the 4 block exert on the 6 block.
In a Young's double slit experiment, the seperation between the slits is 1.20x10-4m; and the screen is located 3.50 m from the slits. What is the wavelength of the light used in this experiment
A 67? resistor, an 9.0?F capacitor, and a 36mHinductor are connected in series in an ac circuit. Calculate the impedance for a source frequency of 300 Hz
A ski tow operates on a slope of angle 14.8? of length 250m . The rope moves at a speed of 12.4km/h, Estimate the power required to operate the tow
The distance between the eyepiece and the objective lens in a certain compound microscope is 12.7 cm. The focal length of the objective is 0.540 cm, determine the overall magnification of the microscope
Katie and Emily are riding on a circular merry-go-round that has a radius of 5m. Katie is on a horse that is 2.5m from the center of merry-go-round and Emily is on a tiger that is 4.5 m from the center of the merry-go-round. What is Katie's tangen..
Intensity level prooduced by a jet airplane at a certain location is 150 dB. find the intensity of the sound wave generated by the jet
A piano emits sound waves with frequencies that range from a low of about 28 Hz to a high of about 4,200 Hz. The speed of sound in air is approximately 343 m/s. find the longest wavelength of sound produced by a piano
Illustrate what fractional increase in the tension of one wire lead to the occurrence of 6 beats/s when both wires oscillate simultaneously?
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