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
KatRina [158]
4 years ago
6

Do stars that look brighter in the sky have larger or smaller magnitudes than fainter stars?

Physics
1 answer:
alina1380 [7]4 years ago
8 0

Answer:

Stars that have lower apparent magnitudes have more brightness.

Explanation:

Greek astronomer Hipparchus devised a system of arranging the luminosity of stars with their apparent magnitude. The brightest stars were in the first magnitude class, and the dimmer stars were in the latter magnitude classes.

Later in the 19th century technology had developed to accurately measure a star's brightness. It was established that a factor of exactly 100 times in intensity was due to difference of 5 magnitudes.

You might be interested in
6. What is not an example of mechanical energy?
zhannawk [14.2K]

Answer:

the answer to your question is c

3 0
2 years ago
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle
Dovator [93]

Answer:The velocity of the train is 3.84m/s

Explanation:

According to the Doppler effect, if the source is moving towards you then the apparent frequency of the sound emitted by the source is higher and if the source is moving away from you then the apparent frequency of the sound emitted by the source is smaller.

This is given by:

fo = V +-Vo/ V +-Vo × source

Where fo= observed frequency

V= velocity of sound

Vo= vo it of the observer

fsource= frequency the source

Given:

Observed frequency of the approaching train fo1= 452Hz

The observed frequency of train= fo2= 442Hz

Velocity of sound= 334m/s

Velocity of source=?

Train approaching the observer is given by:

fo1= V/(V - Vs)× source ...eq1

Train passes the student is given by:

fo2= V/(V - Vs)×source ...eq2

Divide eq1 by eq2

452/442 = (343+Vs)/(343 - Vs)

1.02 =(343+Vs)/(343 -Vs)

Cross multiply

1.02(343- Vs) = 343 + Vs

350.76 - 1.02Vs = 343 + Vs

Collecting like terms

350.76 -343= 1.02Vs+ Vs

7.76 = 2.02Vs

Vs= 7.76/2.02

Vs= 3.84m/s

4 0
3 years ago
A computer with a resistance of 52.7 Ω has a power input of 210.0 W. Calculate the current in the computer. Round your answer to
coldgirl [10]
The correct answer is 2.00 A
5 0
4 years ago
Read 2 more answers
How could you tell whether or not you are in a magnetic feild
Aleks04 [339]
Magnetic fields are areas where an object exhibits a magnetic influence. The fields affect neighboring objects along things called magnetic field lines. A magnetic object can attract or push away another magnetic object. You also need to remember that magnetic forces are NOT related to gravity. The amount of gravity is based on an object's mass, while magnetic strength is based on the material that the object is made of. 
7 0
3 years ago
Planet Kling has half the radius and 2 times the mass of the Earth. What is the best estimate for the magnitude of the gravitati
Vlad [161]

Answer:80 m/s^2

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the mechanical advantage of the machine?
    8·2 answers
  • What's the difference between asexual reproduction and sexual reproduction?!?!
    9·2 answers
  • Between a piece of paper and a rock, which will fall the fastest and why?
    6·1 answer
  • You do 200 joules of work against gravity when lifting your backpack up a flight of stairs that is 4 meters tall. What is the we
    10·1 answer
  • What isFigure ground in psychology
    13·1 answer
  • Consider a single slit that produces a first-order minimum at 16.5° when illuminated with monochromatic light. show answer No At
    7·1 answer
  • What is the state of an object accelerating due to the force of gravity alone?
    8·1 answer
  • What does the blackboard do when white light falls on it?​
    14·1 answer
  • Please help
    8·1 answer
  • How is electrostatic force impacted by charge and distance?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!