Physics, 30.01.2020 16:42 sindy35111

To lift a load of 100 kg a distance of 1 m an effort of 25 kg must be applied over an inclined plane of length 4 m. what must be done to lift the load 2 m, using the same effort?

a) use an inclined plane of length 8 m.

b) use an inclined plane of length 2 m. * i think this is the answer *

c) use an inclined plane of length 10 m.

d) use an inclined plane of length 16 m.

Answers: 2

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Answers

Work = force * distance. We must produce twice as much energy as we are lifting the weight twice as high. But we are not increasing the force so we must increase the length of the ramp ( distance ) instead. The new length will be twice as great as the previous length. So 8 metres is required.

25 kg * 8 m = work = 100 kg * 2 m

Answer from: angie1129

Answer from: zeldawhite76

Simply it would be A

Answer from: ljcervantes6610

Simply it would be A

Answer from: Quest

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm. the wire diameter is d = 0.9 mm. the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2) in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

Answer from: Quest

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by mathematical calculations before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of uranus led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.