Ask question

Ask question

All categories

3 years ago

14

The metal wire is stretched so that its cross-section is still circular but its total length is now 10 meters. What is the resis

tance of the wire after stretching

1 answer:

KATRIN_1 [288]3 years ago

3 0

I don’t know I think about 20 meters but I’m probably wrong I just need to do this so someone can answer my question

You might be interested in

What is Archimedes principles ???&<br><br><br><br>yaha avo sab

vova2212 [387]

Answer:

value-added tax (VAT) is a consumption tax that is levied on a product repeatedly at every point of sale at which value has been added. ... VAT is commonly expressed as a percentage of the total cost. For example, if a product costs $100 and there is a 15% VAT, the consumer pays $115 to the merchant.

Explanation:

archemdes principle states that the boyant upward force by liquid is equal to liquid displaced by solid...

mark me as brainliest ❤️

7 0

3 years ago

Read 2 more answers

To understand the relationships between the parameters that characterize a wave. It is of fundamental importance in many areas o

Monica [59]

Answer:

1) c.

2) a.)

Explanation:

1)

At any wave, if its waveform repeats itself every time interval T, it is said that the wave is periodic, with a period T, which is the time needed to complete an entire cycle. The other options refer at the way in the waves propagates (longitudinal or transversal) and to the type of waveform (sinusoidal), so the right answer is c).

2)

At any wave that propagates at a constant speed, there exists a fixed relationship between the velocity v, the frequency f and the wavelength λ, as follows:

$v = \lambda * f (1)$

So in order to v keep constant, if the frequency is increased, the wavelength will decrease in the same proportion, so a) is the right answer.

7 0

3 years ago

Which mountains are<br> YOUNGEST?

Hoochie [10]

The answer is B,
because it is more round and lower than the other mountains.
The steeper and more pointy and higher a mountain is, the older it is.

Hope this helps!
-Jana

3 0

3 years ago

Read 2 more answers

__________ explains what happens in an event and __________ applies knowledge to create something or change an existing process.

Yuliya22 [10]

An hypothesis is a sort of "untested idea" as to what might be happening. I guess it becomes a theory if experiments back it up, and if the combination leads to other things.So, I'd go for The top pair of answers.

3 0

3 years ago

Can you think of any common ""real-life"" situations in which an understanding of conservation would allow a concrete operationa

Marina86 [1]

Conservation is the understanding that the quantity of an object stays the same even when it changes in appearance. A concrete operational child between ages seven and eleven understands this fact because of the development of his cognitive ability while a preoperational child does not.

For example, change the tea cup of a 5 year old boy from an oblong shape to a short round shape of the same size, he begins to cry because he believes the change in cup has translated to a change in quantity.

In addition, change the denominations contained in an amount of money owned by each of the children of these two categories, the pre operational child seems a lot bothered, but the concrete operational child has enough knowledge of conservation to be undisturbed by this re-arrangement.

3 0

3 years ago