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
ziro4ka [17]
3 years ago
13

Which of the following statements about sunspots is false? a. They are areas of the sun that are "burnt out." c. They are cooler

than the surrounding areas of the sun. b. They occur on the surface of the sun. d. They occur in cycles.
Physics
2 answers:
PSYCHO15rus [73]3 years ago
8 0

Answer: Option (a) is the correct answer.

Explanation:

Sunspots are defined as the dark and cooler areas on the surface of the Earth. A sunspot is present in a region known as photosphere.

Temperature of a sunspot is about 3,800 degrees Kelvin whereas photosphere has a temperature of about 5,800 degree kelvin.

Thus, we can conclude that out of the given options, the statement they are areas of the sun that are "burnt out" is false about sunspots.



photoshop1234 [79]3 years ago
4 0
A) They are areas of the sun that are ''burnt out'' or the first option would be your answer.
You might be interested in
Do you wont to be friends
Angelina_Jolie [31]

Answer:

shore

Explanation:

8 0
4 years ago
How can doing work on an object increase its kinetic energy?
Lyrx [107]

Answer:If the object's speed increases.

Explanation:

If the object's speed increases, then its kinetic energy will increase. If the kinetic energy increases, the change in kinetic energy will be positive.

6 0
3 years ago
A current exists whenever electric charges move. If ΔQ is the net charge that passes through a surface during a time period Δt,
jeka57 [31]

Answer:

It represents the change in charge Q from time t = a to t = b

Explanation:

As given in the question the current is defined as the derivative of charge.

                                  I(t) = dQ(t)/dt ..... (i)

But if we take the inegral of the equation (i) for the time interval  from t=a to

t =b we get

                                   Q =∫_a^b▒〖I(t)  〗 dt

which shows the change in charge Q from time t = a to t = b. Form here we can say that, change in charge is defiend as the integral of current for specific interval of time.

5 0
4 years ago
What does the term Hubble time mean in cosmology, and what is the current best calculation for the Hubble time?
balu736 [363]

Hubble time in cosmology means the estimated age of the universe and the best calculation for it is T=1/H, where H is the Hubble constant
4 0
4 years ago
Which waves can u see
NemiM [27]

light waves. the other waves like gamma rays or infrared waves or radio waves are all not visible to the eye. light is the only thing out of those you can see.

3 0
4 years ago
Read 2 more answers
Other questions:
  • A 10 kg ball has a momentum of 40 kg.m/s.what is the ball's speed?
    8·1 answer
  • The steel ball rolls 2,862 meters in 347 seconds twords the south.what is the steel ball velocity
    14·1 answer
  • The agent of erosion that makes a rock fall from high places is
    13·1 answer
  • Three point charges (some positive and some negative) are fixed to the corners of the same square in various ways, as the drawin
    14·1 answer
  • 4.80-kg bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 75.0 N. If the bucket star
    9·2 answers
  • A cart is propelled over an xy plane with acceleration compo- nents ax 4.0 m/s2 and ay 2.0 m/s2. Its initial velocity has com- p
    11·1 answer
  • 1.
    14·2 answers
  • A 6000 kg rocket is launched vertically from the ground. If the exhaust speed is 1000 m/s, how much gas must be ejected each sec
    9·1 answer
  • Two people stand facing each other at a roller skating rink then push off each other. a). What is the momentum of the system bef
    10·1 answer
  • Using a mass of 1. 8 g and the volume displaced by the sample, calculate the sample's density. Question 17 options: 0. 17 g/mL 0
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!