Don't take your heart rate with your thumb because the thumb has it's own pulse.
2 answers:
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Answer:
<h2>The work done is 0.882 Joules.</h2>Explanation:
To calculate the work, we need to find all forces that are involved in the movement.
As you can analyse, the body is the force that make the box to move, and the friction force is opposite to it, we cannot forget about the friction. So, we have to calculate the resultant force to this context.
So, to find we use:
; where
The friction force would be:
Then, the resultant force is:
Now, we calculate the work:
Therefore, the work done is 0.882 Joules.
Answer:
The magnitude of charge on each is
Solution:
As per the question:
Mass of Earth,
Mass of Moon,
Now,
The gravitational force of attraction between the earth and the moon, if 'd' be the separation distance between them is:
(1)
Now,
If an identical charge 'Q' be placed on each, then the Electro static repulsive force is given by:
(2)
Now, when the net gravitational force is zero, the both the gravitational force and electro static force mut be equal:
Equating eqn (1) and (2):
Q =
