Koushal picks up a box from the ground and places it back. The work done here is ___.

0 Joules

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30 Joules

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40 Joules

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50 Joules

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Q. Koushal picks up a box from the ground and places it back. The work done here is ______.

A system is provided with $50$ Joules of heat and the work done on the system is $10$ joules. What is the change in the internal energy of the system in Joules?

Q. As shown in the figure, on bringing a charge

Q

from point

A

B

and from

B

C

, the work done are

2 Joules

and

- 3 Joules

respectively. The work done in bringing the charge from

C

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Q. As shown in figure, on bringing a chance Q from point A to B and from B to C, the work done are 2 joules and -3 joules respectively. The work done in bringing the charge from C to A will be:

Q. (^-> stands for vector)
Given F^-> = (xy²) i^{^} + (x²y)j^{^} Newton .
Find the work done by F^-> when a particle is taken along the semicircular path
OAB from O to B where the co-ordinates of B are (4,0) and O is the origin.
(1) 65/3 joules
(2) 75/2 joules
(3) 73/4 joules
(4) 0 joules

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Standard VI Physics

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