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shtirl [24]
3 years ago
5

adeen says that you can increase the resistance of a copper wire by hammering the wire to make it narrower and longer. Arnell sa

ys that you can increase its resistance by heating the wire. Which one, if either, is correct, and why
Physics
1 answer:
ludmilkaskok [199]3 years ago
7 0

Answer:

<em>Both of Arnell and Adeen are right.</em>

<em></em>

Explanation:

For Adeen, hammering the wire makes it flat, effectively reducing the cross sectional area, and increasing the length of the wire. <em>Recall that the resistivity of a metal conductor increases with length and decreases with cross sectional area. From this, we can see that the resistance of the wire will increase due to the hammering. This means Adeen is correct.</em>

For Arnell, heating a metal causes the atoms along with their electrons to vibrate in a random manner. These random motions is not organised and can be in any direction. For electricity to flow smoothly, the electrons must travel in the same direction in an orderly fashion. <em>The randomly vibrating atoms will continuously bump into the flowing electron, resisting the smooth motion of the electrons. This collisions results in an additional resistance, hence, the resistance is increased. This means Arnell is correct.</em>

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How is pressure measured? question 1 options: pressure is measured as force per inch. pressure is measured as force per gram. pr
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Pressure is measured as force per unit area, which is the third option.

<h3>What is pressure?</h3>

Pressure is amount of force that is applied over a given area divided by the size of this area.

Pressure is calculated by multiplying the force applied on the object by the area covered.

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7 0
2 years ago
Yall have helped a lot i just need help on this then ill be done for a while
Lubov Fominskaja [6]

Answer:

f(x)=a(x - h)2 + k

Much like a linear function, k works like b in the slope-intercept formula. Like where add or subtract b would determine where the line crosses, in the linear, k determines the vertex of the parabola. If you're going to go up 2, then you need to add 2.

The h determines the movement horizontally. what you put in h determines if it moves left or right. To adjust this, you need to find the number to make the parentheses equal 0 when x equals -2 (because moving the vertex point to the left means subtraction/negatives):

x - h = 0

-2 - h = 0

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h = -2

So the function ends up looking like:

f(x)=a(x - (-2))2 + 2

Subtracting a negative cancels the signs out to make a positive:

f(x)=a(x + 2)2 + 2Explanation:

6 0
3 years ago
How many ounces is 200 lbs converted
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Answer:

3,200 ounces

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200 pounds

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2,000 pounds as ounces.

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200 (mass) * 16 = 3,200 ounces.

Thank you!

- EE

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2 years ago
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