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
saw5 [17]
3 years ago
7

What is the similarities between rigel star and sirius star? explain the similarities..

Physics
1 answer:
Nataliya [291]3 years ago
6 0
The Hertzsprung-Russel diagram is a chart of the relationship between absolute magnitude and the surface temperature of stars. Rigel is a super giant star that shines blue or blue white with an average surface temperature nearing 20000 degrees Celsius. Sirius is a main sequence star with an average surface temp of over 10000 degrees Celsius. Sirius is similar in appearance to Rigel but is brighter in the night sky from earth.  
You might be interested in
A train leaves the train station at noon and travels at a constant speed of vt = 50 mi/hr on a straight track. 2 hr later, a car
asambeis [7]

Answer:

350 miles

Explanation:

When the car starts 2 hours later, the train would have a head start of

50 * 2 = 100 miles

The speed of the car relative to the train is

70 - 50 = 20 mi/hr

For the car to catch up with the train, it must cover the 100 miles difference at the rate of 20mi/hr. So the time it would need to cover this difference is

100 / 20 = 5 hours

After 5 hours, the car would have traveled a distance of

5 * 70 = 350 miles which is also the distance from the station to where the car catches up

6 0
3 years ago
1. An astronaut is getting ready to explore. If his mass is 60 kg, what is his weight<br> on Earth?
kifflom [539]

Answer:

<h3>The mass of an object is the same on Earth, in orbit, or on the surface of the Moon. ... 1N=1kg ⋅m/s2. 1 N = 1 kg · m/s 2 . ... The gravitational force on a mass is its weight. ... </h3>

Explanation:

<h3>ILY:)</h3>

3 0
3 years ago
Read 2 more answers
A 2.0-kg laptop sits on the horizontal surface of the seat of a car moving at 8.0 m/s. The driver starts slowing down to stop. F
ivanzaharov [21]

Answer: 32.65\ m

Explanation:

Given

mass of laptop m=2 kg

The velocity of car u=8 m/s

The coefficient of static friction is \mu_s=0.4

The coefficient of kinetic friction is \mu_k=0.2

As the car is moving, so the coefficient of kinetic friction comes into play

deceleration offered by friction \mu_kg=0.2\times 9.8\ m/s^2

Using the equation of motion v^2-u^2=2as\\

insert the values

0^2-8^2=2(-0.2\times 9.8)s\\\\s=\dfrac{64}{1.96}\\\\s=32.65\ m

4 0
3 years ago
two 2.5 kg balls move away from each other one traveling 3 m/s to the right the other 4 m/s to the left what is the magnitude of
Juli2301 [7.4K]

Answer:

2.5 kg.m/s

Explanation:

Taking left side as positive while right side direction as negative then

Momentum, p= mv where m is the mass of the object and v is the velocity of travel

Momentum for ball moving towards right side=mv=2.5*-3=-7.5 kg.m/s

Momentum for the ball moving towards the left side=mv=2.5*4=10 kg.m/s

Total momentum=-7.5 kg.m/s+10 kg.m/s=2.5 kg.m/s

5 0
3 years ago
Which of the following explanations is correct about the wave that travels through the medium?
SVETLANKA909090 [29]
The correct answer is letter A
5 0
2 years ago
Other questions:
  • More massive objects have a large gravitational force or weight. Why do heavier objects accelerate to the ground at the same rat
    10·2 answers
  • When designing an experiment, the first step is to ____.
    9·1 answer
  • Fluorine (F) has nine protons and ten neutrons. The atomic mass of fluorine is _____.
    15·1 answer
  • All of the following are stages of change EXCEPT
    13·1 answer
  • a quantity of n2 gas originally held at 4.75 atm pressure in a 1.00-L container at 26c is transerred to a 10.0-L container at 20
    15·2 answers
  • Woman has a near point of 75.0 cm. What focal length, f, is necessary for the corrective lens so that he can hold his physics bo
    8·1 answer
  • 7. How many forces are acting on this object? *<br> Fnorm<br> Ffrict<br> Fapp<br> Fgray<br> Å
    6·1 answer
  • What colors of light are absorbed when white light falls on a green object?
    11·2 answers
  • Problem 7:__deletededc326999bef85931fda5d1ab0d68e21218f27b46f4f11ab80872358251b584ddeleted__ 0N86-C1-52-40-A837-22820 If object
    12·1 answer
  • The quantum state of a particle can be specified by giving a complete set of quantum numbers (n,l, ml,ms). How many different qu
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!