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A UFO is observed directly above the earth moving at a constant velocity. An astronaut on the moon (3.8 108 m from earth) observes the UFO passing overhead 5.1 s later. From the UFO's reference frame, how long did it take to travel from the earth to the moon?(answer in s please)
in an old fashion amusement park ride passengers stand inside a 3.0m tall5.0m diameter hollow steel cylinder with their
a cylinder with a movable piston contains gas at a temperature of 27 degrees celsius a volume of 1.50m3 and an absolute
Three resistors have values 5 ohms, 2 ohms, and 1 ohms. The first one is followed by the last two wired in parallel. When this arrangement is connected to a battery, which resistor(s) has the largest current.
A penny is placed on a rotating, old-fashioned record turntable. At the highest speed, the penny starts sliding outward. What are the forces acting on the penny?
You are given 65.000 cm of copper wire with diameter 7.0000 mm. At what rate is thermal energy generated in the loop
A pipe open only at one end has a fundamental frequency of 256 Hz. A second pipe, initially identical to the first pipe, is shortened by cutting off a portion of the open end.
Calculate the X and Y components of a 1.00x102 gram force at an angle of 120 degrees and use mass weight units of grams
a 1.48 cm diameter solenoid passes through the center of a 5.95 cm diameter loop. the magnetic field inside the
The second harmonic sinusoidal standing wave in a pipe with both ends open has a wavelength of 2m. The sound speed is 340 m/s. What is the frequency of the second harmonic
Light from a laser strikes a diffraction grating that has 4250 grooves per centimeter. Find the wavelength of the laser
A 70-kg stunt pilot pulls out a drive while flying at 50 m/s. If he flies a circular path with a radius of 200 m, what force does his seat exert on him at the bottom of the path
A telescope can be used to enlarge the diameter of a laser beam and limit diffraction spreading. what is the size of the spot this beam would make on the moon
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