Physics, 27.06.2019 19:30 naomicervero
A3.5 kg block is pushed along a horizontal floor by a force f? of magnitude 15 n at an angle ? =40° with the horizontal (fig. 6.8). the coefficient of kinetic friction between the block and the floor is 0.25 . calculate the magnitudes of (a) the frictional force on the block from the floor and (b) the block's acceleration.
Answers: 3
Physics, 22.06.2019 12:10
Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?
Answers: 2
Physics, 22.06.2019 12:50
The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.
Answers: 2
Physics, 22.06.2019 14:30
What was the first instrument to ever record an earthquake?
Answers: 1
Physics, 22.06.2019 19:30
Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.
Answers: 1
A3.5 kg block is pushed along a horizontal floor by a force f? of magnitude 15 n at an angle ? =40°...
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