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3 years ago

What is the sun's thickest layer?besides radiation zone?

Physics

2 answers:

makvit [3.9K]3 years ago

3 0

Corona gas star is literally z thickest layer. hope it helped.

enyata [817]3 years ago

3 0

Besides radiation zone, the sun's thickest layer is the corona gas star.

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Samantha walked 5km/h . how long did it take to her to travel 15 km?

valkas [14]

Answer:

3hrs is the answer

Explanation:

time=d/t

t=15/5 hrs

t=3 hrs

4 0

3 years ago

Please answer !!!A company wants to install a sensor to monitor the light level in the offices of their buildings. The sensor co

vovikov84 [41]

Answer:

Explanation:

The sensor contains an LDR which has a resistance of 10kohlms in daylight and 100kohlms in the dark.

If the resistor in the circuit is 1 megaohlm, the total resistance in daylight and darkness will be 1.01 megaohms and 1.1 megaohlms.

The percentage difference = (1.1-1.01)/1.1*100% = 8.18%

If the resistor in the circuit is 25 kohlm, the total resistance in daylight and darkness will be 35 kohms and 125 kohlms.

The percentage difference = (125-35)/125*100% = 72%

With the input p.d to the sensing circuit fixed at 12 v, the sensing current will change according to the total resistance. A 72% difference is much more detectable. So the 25 kohm resistor is the better choice.

3 0

3 years ago

Read 2 more answers

A wire of resistance R is cut into ten equal parts which are then connected in parallel. The equivalent resistance of the combin

Greeley [361]

Answer:

<em>The equivalent resistance of the combination is R/100</em>

Explanation:

<u>Electric Resistance</u>

The electric resistance of a wire is directly proportional to its length. If a wire of resistance R is cut into 10 equal parts, then each part has a resistance of R/10.

Parallel connection of resistances: If R1, R2, R3,...., Rn are connected in parallel, the equivalent resistance is calculated as follows:

$\displaystyle \frac{1}{R_e}=\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}+...+\frac{1}{R_n}$

If we have 10 wires of resistance R/10 each and connect them in parallel, the equivalent resistance is:

$\displaystyle \frac{1}{R_e}=\frac{1}{R/10}+\frac{1}{R/10}+\frac{1}{R/10}...+\frac{1}{R/10}$

This sum is repeated 10 times. Operating each term:

$\displaystyle \frac{1}{R_e}=\frac{10}{R}+\frac{10}{R}+\frac{10}{R}+...+\frac{10}{R}$

All the terms have the same denominator, thus:

$\displaystyle \frac{1}{R_e}=10\frac{10}{R}=\frac{100}{R}$

Taking the reciprocals:

$R_e=R/100$

The equivalent resistance of the combination is R/100

6 0

3 years ago

What is the frequency of a wave if the speed of the wave is 7.9m/s and the wavelength is 3.1m?

Tpy6a [65]

Answer:

Explanation:

The frequency of the wave given it's velocity and wavelength can be found by using the formula

$f = \frac{c}{ \lambda} \\$

where

c is the velocity of the wave in m/s

$\lambda$ is the wavelength in m

From the question

c = 7.9 m/s

$\lambda$ = 3.1 m

We have

$f = \frac{7.9}{3.1} = 2.548387... \\$

We have the final answer as

Hope this helps you

6 0

3 years ago

If a proton is moved a certain distance directly opposite an external electric field, what can we say about the change in the el

gizmo_the_mogwai [7]

Answer:

Potential energy increases.

Explanation:

We know that the direction of electric field is from positive to negative charge. As the proton has the positive charge so if it moves in the direction opposite of electric field, it means that the positive charge will move towards the positive region. As the positive charge is attracted towards negative and repelled by the positive charge. So the work done will be negative in bringing the positive charge towards the positive region of the field and potential energy increases in the direction opposite to electric field. As the potential energy decreases in the direction of electric field.

5 0

3 years ago