1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lelu [443]
3 years ago
8

Multiple choice: Sunspots appear dark because

Physics
1 answer:
zepelin [54]3 years ago
3 0

Answer: C. They are regions in which strong magnetic fields make it difficult for fresh supplies of hot, ionized gas to reach the photosphere

Explanation:

Sunspots appear dark because they are regions in which strong magnetic fields make it difficult for fresh supplies of hot, ionized gas to reach the photosphere.

Sunspots are typically cooler than their surroundings. For example, the temperature of a large sunspot can be about 4,000 Kelvin which is lower than the temperature of the photosphere around it which is about 5,800 Kelvin.

You might be interested in
How you work out efficiency?
PSYCHO15rus [73]

Answer:what do u mean??

Explanation:

7 0
3 years ago
Read 2 more answers
g Let the orbital radius of a planet be R and let the orbital period of the planet be T. What quantity is constant for all plane
Wittaler [7]

Explanation:

Kepler's third law gives the relationship between the orbital radius and the orbital period of the planet. Its mathematical form is given by :

T^2=\dfrac{4\pi ^2}{GM}a^3

Here,

G is gravitational constant

M is mass of sun

It means that the mass of Sun is constant for all planets orbiting the sun, assuming circular orbits.

7 0
3 years ago
A repelling force occurs between two charged objects when​
fgiga [73]
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ It would be 'when they have like charges.'

'Like charges' means the same charge. For example, two positive charged objects have like charges.

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

4 0
3 years ago
A boy pushes a 54kg cart with a force of 81N. What is the cart's acceleration?
borishaifa [10]

Explanation:

maturity also get disorganised

8 0
3 years ago
Jennifer, who has a mass of 50.0 kg, is riding at 35.0 m/s in her red sports car when she must suddenly slam on the brakes to av
Assoli18 [71]

Answer:

Average force = 3.5 kN

Explanation:

Given:

Mass of Jennifer (m) = 50 kg

Initial velocity = 35 m/s

Time taken to stop body = 0.5 s

Find:

Average force

Computation:

v = u + at

0 = 35 + a(0.5)

Acceleration (a) =  - 70 m/s² = 70 m/s²

Average force = ma

Average force = (50(70)

Average force = 3500 N

Average force = 3.5 kN

6 0
3 years ago
Other questions:
  • Show the SI dimension of density (p) and the BG unit of specific volume
    5·1 answer
  • Martha was leaning out of the window on the second floor of her house and speaking to Steve. Suddenly, her glasses slipped from
    12·1 answer
  • Experiments need to be repeated by the scientist and also replicated by other scientists.
    10·2 answers
  • Explain the difference between speed and vilocity?
    12·1 answer
  • the rapid movement of gas molecules can be explained because gasses have size particles and exert attraction for other gas parti
    13·1 answer
  • What did Ernest Rutherford's experiment of a beam of alpha particles aimed
    10·1 answer
  • Identify equivalent terms for stored energy and energy of motion.
    12·1 answer
  • A cyclist rides 3 km west and then turns around and rides 2 km east. What is her displacement?
    15·1 answer
  • A crowbar is being used with an actual mechanical advantage of 8. If the input force is 400 Newton’s on the 0.3 meter long end o
    14·1 answer
  • Calculate 18% of 2758 correct to 4 significant figure​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!