<h3>IMPULSE AND MOMENTUM</h3>
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- Why is impulse and momentum important in sports like cricket??
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Impulse and momentum are important in sports like cricket because from the word "<em>momentum</em>" it describe itself like you're getting used of it or you know what to do like there's no stopping you.
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<u>How </u><u>a</u><u>r</u><u>e</u><u> </u><u>impulse and momentum</u><u> </u><u>related?</u>
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Answer:
a) When R is very small R << r, therefore the term R+ r will equal r and the current becomes
b) When R is very large, R >> r, therefore the term R+ r will equal R and the current becomes
Explanation:
<u>Solution :</u>
(a) We want to get the consumed power P when R is very small. The resistor in the circuit consumed the power from this battery. In this case, the current I is leaving the source at the higher-potential terminal and the energy is being delivered to the external circuit where the rate (power) of this transfer is given by equation in the next form
P=∈*I-I^2*r (1)
Where the term ∈*I is the rate at which work is done by the battery and the term I^2*r is the rate at which electrical energy is dissipated in the internal resistance of the battery. The current in the circuit depends on the internal resistance r and we can apply equation to get the current by
I=∈/R+r (2)
When R is very small R << r, therefore the term R+ r will equal r and the current becomes
I= ∈/r
Now let us plug this expression of I into equation (1) to get the consumed power
P=∈*I-I^2*r
=I(∈-I*r)
=0
The consumed power when R is very small is zero
(b) When R is very large, R >> r, therefore the term R+ r will equal R and the current becomes
I=∈/R
The dissipated power due toll could be calculated by using equation.
P=I^2*r (3)
Now let us plug the expression of I into equation (3) to get P
P=I^2*R=(∈/R)^2*R
=∈^2/R
I would let someone more confident in this field to answer this question but that sounds like a Chemical reaction
There are a couple of things one can do to promote Americanism and love of one's country. One thing that can be done is the promotion of American history and the explanation of why, how, and what has America achieved thus far and why that is something that should be looked at with respect.
Answer:
Electric field will be
Explanation:
We have given diameter of the copper d = 2.05 mm
So radius
We know that area
Current is given as i = 4.7 A
So current density
Resistivity is given
We know that electric field is given by