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3 years ago

What is the exact meaning of croos section and cross sectional area of a conductor?

1 answer:

4 0

The cross section is the little tiny circle you see when you cut a wire
and look at the flat, cut end.

The cross-sectional area of the wire is the area of that little circle.
It's equal to

Area = (pi) x (1/4) x (Diameter of the wire)²

You might be interested in

1.- Se desea elevar un cuerpo de 1500kg utilizando una elevadora hidráulica de plato grande

kvv77 [185]

Answer:

181.48 N

Explanation:

Calculate the area :

Area = pi * r² ;

pi = 3.14 ; r1 = 90cm /100 = 0.9m ; r2 = 10/100 = 0.1m

Area 1, A1 = 3.14 * 0.1² = 0.0314 m²

Area 2, A2 = 3.14 * 0.9² = 2.5434 m²

Force, F = mass * acceleration due to gravity

F2 = 1500 * 9.8 = 14700 N

Force 1 / Area 1 = Force 2 / Area 2

Force 1 = (Force 2 / Area 2), * Area 1

Force 1 = (14700 / 2.5434) * 0.0314

Force = 5779.6650 * 0.0314

= 181.48 N

5 0

3 years ago

a student that just received their driver's license decides to buy a new car. he remembers from physics class that heat engines

blsea [12.9K]

Answer: the first law of thermodynamics

Explanation:

5 0

3 years ago

A pulley system has an MA of 4. How much force would be necessary to pull a 200 newton box

Airida [17]

Mechanical advantage is defined as

$MA = \frac{F_{output}}{F_{input}}$

MA = 4

now we will have

$F_{output} = 200 N$

as we need to pull up a box of weight 200 N

now by above formula we can find how much force it requires to pull up the box

$4 = \frac{F_{output}}{F_{input}}$

$4 = \frac{200}{F_{input}}$

$F_{input} = \frac{200}{4} = 50 N$

so it requires 50 N force to pull the weight of 200 N

7 0

3 years ago

Q4. Olly Murs pushes a car uphill. He pushes

OLEGan [10]

Work done = force x distance

= 2500 N x 2.5

= 6,250 Joules of work done.

7 0

2 years ago

A _____ has been tested and supported many times whereas a _____ is an idea about how things might work.

Gnoma [55]

Answer:

b. scientific theory, hypothesis

Explanation:

Hypothesis is an idea which is claim about any happening and how things work. On the other hand Scientific theory is tested. if it is proven correct by all ways, it becomes a law.

SO our correct answer is:

A <u>scientific theory</u> has been tested and supported many times whereas a <u>hypothesis</u> is an idea about how things might work.

4 0

3 years ago