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zhannawk [14.2K]
3 years ago
10

Find the work done by a man who is pulling a box of 45kg of mass by means of rope which makes angle of 45 degrees.

Physics
1 answer:
Juli2301 [7.4K]3 years ago
4 0

Answer:

0

Explanation:

Since no distance is given, the force is not doing any work

No work is done by the man since we do not know the distance or displacement.

Work is only said to be done when the force applied on an object moves it through a particular distance.

 Work done  = Force x distance.

Since no distance is given in this problem, we can as well assume that the force applied is doing no work on the object.

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Archimedes is known for contributions to a scientific discipline that is different from that of the other scientists.

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With the intensity at about half of maximum, how does the current change when you increase the frequency of the light?
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Answer:

Increase

Explanation:

Energy  of  given as follows

E = h f

Where f is the frequency of incident light

when high frequency light falls then it will increase the number of produce photon and that increase in number of photon will lead to increase in the number of electron.When number of electron will increase it mean that current will also increase.

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4 0
3 years ago
5. Find the volume of the composite space figure to the nearest whole number.
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The shape is missing but let's consider it a semi-cylinder attached to the rectangular prism.
Given:
radius = 4.5 mm 
<span>Height = 11 mm </span>

<span>Volume of cylinder = (1/2)(pi)(4.5)^2(11)   (the shape is divided into half)
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Volume of prism = L x W x H
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4 years ago
How has the diversity of mammals changed through time do you see any realtionship with how reptiles diversity had changed
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3 years ago
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8 0
3 years ago
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