Physics, 06.02.2021 21:10 madisontrosclair2
Furnace oil has a heat of combustion of 44 MJ/kg. assuming that 70% of the heat is useful, how many kilograms of oil are required to raise the temperature of 2000 kg of water from 20 degree Celsius to 99 degree celsius
Answers: 3
Physics, 22.06.2019 11:30, alexandroperez13
With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90
Answers: 1
Physics, 22.06.2019 16:00, ggdvj9gggsc
Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.
Answers: 2
Physics, 22.06.2019 20:00, teescub9738
In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm
Answers: 1
Furnace oil has a heat of combustion of 44 MJ/kg. assuming that 70% of the heat is useful, how many...
Advanced Placement (AP), 30.06.2019 20:00
History, 30.06.2019 20:00
Biology, 30.06.2019 20:00
History, 30.06.2019 20:00
Mathematics, 30.06.2019 20:00
History, 30.06.2019 20:00