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r-ruslan [8.4K]
3 years ago
14

Question 1

Physics
1 answer:
kakasveta [241]3 years ago
3 0

Answer:

W = 600 J

Explanation:

We have,

According to attached figure,

Height of the inclined plane is 60 m

Force acting on the block is 10 N

It is required to find the work must be done against gravity to move it to the top of the incline. The work done is given by :

W = mgh

or

W=F\times h\\\\W=10\times 60\\\\W=600\ J

So, the work done against the gravity is 600 J.

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A student weighing 700 N climbs at constant speed to the top of an 8 m vertical rope in 10 s. The average power expended by the
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How far does light travel in the time it takes sound to travel 1 cm in air at 20°c?
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substitute the value of v_1

we get v_2=1.912 m/s

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5 0
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Answer:

Explanation:

Equal to the sum of the densities of both substances

Equal to the sum of the densities of both substances

Equal to the difference in the densities of both substances

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of which I cannot predict anything about its value

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of an intermediate value to both substances which will depend on which substance is in greater quantity

of an intermediate value to both substances which will depend on which substance is in greater quantity

8 0
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