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1 year ago

Sunspots appear dark because they are cooler than the surrounding solar surface. True or false

Physics

1 answer:

DiKsa [7]1 year ago

6 0

Answer:

False, Sunspots appear dark (in visible light) due to their low temperature(cooler) than rest of the sun

Explanation:

Sunspots appear dark because they are much cooler( have low temperature than the rest of the surface contained by Sun. As they appear dark, but still they have very temperature that's why so hot. Sunspots have temperatures ranges 3,500 Celsius (3773 kelvin) and the surrounding surface of the sun has a temperature much higher of about 5,500 Celsius(5773 Kelvin). Even if we see a sunspot alone in space, it will glow so brightly.

Learn more about sunspots :

brainly.com/question/27774496

#SPJ4

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Insulators are materials that reduce heat flow. Nature uses many types of insulation to protect animals from losing too much hea

katrin2010 [14]

Answer:

This has all the answer (Data sheet, graph, answers to the questions, and the summary) :)

6 0

2 years ago

Will each of the following actions increase the distance between the diffraction spots? a) Increase the distance between the scr

diamong [38]

Answer:

A) no

B) no

C) yes

D) no

E) yes

5 0

2 years ago

MULTIPLE CHOICE QUESTION

Nookie1986 [14]

Which object? More information is needed to answer this question

4 0

2 years ago

Calculate the approximate volume of a uranium nucleus, 23592u. (you can ignore the mass defect in this calculation and simply ta

tester [92]

Radius of nuclei is given by formula

$R = R_oA^{1/3}$

now we can say volume of the nuclei is given as

$V = \frac{4}{3}\pi R_o^3* A$

now the density is given as

density = mass / volume

mass of nuclei = mass of neutron + mass of protons

$m = z*m_p + (A- z)*m_n$

$m_p = m_n = 1.008u$

$m = A*1.008u$

Now density is given as

$\rho = \frac{A*1.008u}{\frac{4}{3}\pi R_0^3* A}$

here we know that

$R_0$ = 1.2 fm

$\rho = \frac{1.008u}{\frac{4}{3}\pi*(1.2*10^{-15})^3}$

$\rho = 2.31 * 10^{17} kg/m^3$

So from above we can say that density of all nuclei is almost same.

5 0

3 years ago

Can someone help me ?

hammer [34]

Answer:

1) Time interval Blue Car Red Car

0 - 2 s Constant Velocity Increasing Velocity

2 - 3 s Constant Velocity Constant Velocity

3 - 5 s Constant Velocity Increasing Velocity

5 - 6 s Constant Velocity Decreasing Velocity

2) For Red and Blue car y₂ = 120 v = $\frac{y_{2}-y_{1}}{t_{2}-t_{1}}$ = $\frac{120-0}{6-0}$ = 20 m/s

We get the same velocity for two cars because it is the average velocity of the car at the given interval of time. It is measured for initial and final position.

3) At t = 2s, the cars are the same position, and are moving at the same rate

Position - same

Velocity - same

The position-time graph shares the same spot for two cars.

4 0

3 years ago