Physics, 04.06.2020 19:14, santisammy237
IV. Work out (show all the necessary steps)
1. The velocity ratio of a certain inclined plane is 4. The efficiency of this machine while a trolley
is moving with a constant velocity up its surface is 60%.
A, determine the angle that the inclined plane makes with the horizontal
B. find the actual mechanical advantage of the machine
C, calculate the coefficient of kinetic friction b/n the trolley and the surface of the incline.
2. An inclined plane rises 30cm for every 50cm distance measured up the plane. The coefficient of
kinetic friction in the surface of the incline and a block of weight 400N, which is pulled up the
plane is 0.2. find
A. The minimum effort force acting on the object parallel to the plane
B, the velocity ratio, and
C, the efficiency of the system,
3. A wooden block of mass 2kg is 20cm thick, 10cm wide and 30cm tall. Calculate
A, the minimum pressure the block exert on the surface
B, the maximum pressure the block exerts on the surface
Answers: 2
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An uplifted block of rock between two normal faults
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Could someone . i have tried to solve myself but my calculation is off
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An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg. how much energy e must be supplied to the device? express your answer in joules.
Answers: 1
Physics, 22.06.2019 19:20, jacorey77
On a hot saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 22degreesc. at noon the air conditioner is turned off, and the people go home. the temperature outside is a constant 33degreesc for the rest of the afternoon. if the time constant for the building is 4 hr, what will be the temperature inside the building at 4 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? at 6 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? when will the temperature inside the building reach 24degreesc? 324281
Answers: 3
IV. Work out (show all the necessary steps)
1. The velocity ratio of a certain inclined plane is 4....
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