A light bulb operates at 21 percent efficiency the emitted
A light bulb operates at 2.1 percent efficiency. The emitted light is 555 nm, find the number of photons per second given off.
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a ball is thrown toward a cliff of height h with a speed of 30 ms at an angle of 60 degree above horizontal it lands on
you pull an 18 kilogram box across the floor with a strap that is at an angle of 39 degree above the horizontal
a salt shaker sits on a wheel that is turning at 20 rpm if the wheels diameter is 43 centimeter determine the
an 860 kilogram race car can drive around an unbanked turn at a maximum speed of 59 meter per second without slipping
a light bulb operates at 21 percent efficiency the emitted light is 555 nm find the number of photons per second given
a basketball is thrown horizontally with an initial speed of 420ms a straight line is drawn from the release point to
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a hydrogen atom in its ground state is illuminated with light having a wavelength of 967 nm can the hydrogen atoms
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