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k0ka [10]
3 years ago
6

Determine the answer to the equation 30 km/h × 17 h =

Physics
1 answer:
Jobisdone [24]3 years ago
5 0
30 km/h * 17 h =  30*17  km/h  *h
                         =    510 km
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dezoksy [38]

Answer:

Work done, W = 1786.17J

Explanation:

The question says "A 75.0-kg painter climbs a 2.75-m ladder that is leaning against a vertical wall. The ladder makes an angle of 30.0 ° with the wall. How much work (in Joules) does gravity do on the painter? "

Mass of a painter, m = 75 kg

He climbs 2.75-m ladder that is leaning against a vertical wall.

The ladder makes an angle of 30 degrees with the wall.

We need to find the work done by the gravity on the painter.

The angle between the weight of the painter and the displacement is :

θ = 180 - 30

= 150°

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W=Fd\cos\theta\\\\=75\times 10\times 2.75\times \cos30\\\\=1786.17\ J

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6 0
2 years ago
A car's fuel economy is 30 mpg. a warning light is displayed if the remaining distance that can be driven before the car runs ou
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7 0
3 years ago
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A 3 x 10^-6 C charge is 5m away from a -2x 10^-6 C charge A. Attractive because one is positive the other one is negative B. Det
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Answer:

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KIM [24]

Answer:

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Explanation:

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A toaster needs a 110-volt outlet because it doesn’t need too much electricity.  Electricity can be converted to heat, and toaster only needs to be heated and nothing else that requires extra electricity while clothes dyer requires higher voltage because it needs more effort and electricity in order to do its function.

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2 years ago
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