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2 years ago

7

I will award brainliest...Please what is the work done by a man who is pulling a box of 45kg of mass by means of rope which make

s angle of 45 degrees?

1 answer:

Minchanka [31]2 years ago

3 0

Answer:

No work is done since no distance is given

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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NemiM [27]

This depends on the direction of the velocity vector to the magnetic field vector. The force is F=q(VxB) ("x" is the cross product.) The max force is when V and B are perpendicular. Then F=qVB = (1.602e-19)(2000)(300) = 9.612e-14 N

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2 years ago

Any child is pushing a shopping cart at a speed of 1.5 m/s.how long will it take this child to push the cart down the aisle with

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2 years ago

Several springs are connected as illustrated below in (a). Knowing the individual springs stiffness k1 = 20 N/m, k2 = 30 N/m, k3

Hatshy [7]

Answer:

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Explanation:

Given that,

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According to figure,

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Put the value into the formula

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Put the value into the formula

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Put the value into the formula

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3 years ago

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Nata [24]

Answer:

Explanation:

Given

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prohojiy [21]

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