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Light with a frequency of 2.55 x 1015 Hz ejects electrons from the surface of aluminum, which has a work function of 4.28 eV. What is the minimum de Broglie wavelength of the ejected electrons? nm
When released, the textbook slides on a horizontal tabletop with coefficient of kinetic friction k = 0.30. Use the work-energy theorem to find out how far the textbook moves from its initial position before coming to rest.
1. an electric motor performs 2000 j of work while lifting a 50 kg mass. how far does it lift the mass?it it takes
Venus has a mass of 4.86x10^24 kg and a radius of 6.05x10^6 m. What is the acceleration due to gravity on Venus
A satellite orbits at a distance from the Earth's center of about 4.80 Earth radii and takes 14.8 hours to go around once, What is its orbital velocity
Find the velocity vector of a bag just before it hits the ground. It is dropped 500m above the ground and has velocity 5 m/s
As shown above, a uniform boom with a mass of 25.0 kg and a length of 3.00 meters is suspended at its left end by a low friction bearing and at its middle by low mass steel wire of diameter 4.00 mm. Y steel = 2.00 *10^11 Pa. Find the tension in the c..
A skateboarder, with an initial speed of 2.0 m/s, rolls virtually friction free down a straight incline of length 18m in 3.3s. At what angle is the incline oriented above the horizontal
A car (mass 930 kg) is traveling with a speed of 48 mi/h. A bug (mass 6 mg) is traveling in the opposite direction. What speed would the bug need
A cylindrical spaceship of length 40.0 m and diameter 8.75 m is traveling in the direction of its cylindrical axis (length). What is the length of the ship, as measured by an Earth observer measured in m
If the bullet has a mass of 21.5 and a speed of 310 , how high would the block rise into the air after the bullet becomes embedded in it.
A two-slit apparatus is covered with a red (643 nm) filter. When white light is shone on the filter, on the screen beyond the two-slit apparatus, how wide will that diffraction maximum be
A 150 ohm resistor is connected in series with a 0.250 H inductor. The voltage across the resistor is VR = 3.80 cos (720t) Volts. Derive an expression for the voltage VL across the inductor
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