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
Dennis_Churaev [7]
2 years ago
6

What is the apparent magnitude of the brightest star in the Big Dipper?

Physics
2 answers:
alex41 [277]2 years ago
4 0
The magnitude of Alioth ( the brightest star in the big dipper ) is 1.76 and it is about 81 light years distant from Earth. 
ollegr [7]2 years ago
3 0

Answer: +1.77

Explanation:

Big dipper is the  asterism made of seven bright stars in Ursa Major constellation. An asterism a pattern formed by joining the bright stars in the night sky. On the other hand, whole night sky is divided into 88 areas called constellations. These asterisms are used to identify the constellations.

The brightest star of the big dipper is Alioth which is the 32nd brightest star in the night sky. Its apparent magnitude is +1.77.

You might be interested in
Microwave ovens emit microwave energy with a wavelength of 12.1 cm. What is the energy of exactly one photon of this microwave r
EastWind [94]

Answer:

1.64\cdot 10^{-24}J

Explanation:

The energy of a photon is given by:

E=\frac{hc}{\lambda}

where

h=6.63\cdot 10^{-34} Js is the Planck constant

c=3\cdot 10^8 m/s is the speed of light

\lambda is the wavelenght of the photon

For the microwave photons in this problem,

\lambda=12.1 cm=0.121 m

so their energy is

E=\frac{(6.63\cdot 10^{-34}Js)(3\cdot 10^8 m/s)}{0.121 m}=1.64\cdot 10^{-24}J

3 0
3 years ago
11. A box with a mass of 1.0 kg is resting on a horizontal surface and the coefficient of friction between the block and the sur
AlladinOne [14]

Answer:

We know that the force pulling the box in the positive x direction has a magnitude of m g sin 30 . Using Newtons Second Law, F = ma , we just need to solve for a :

ma=mgsin30

a=gsin30

=(10m/s2)(0.500)

=5m/s2

5 0
2 years ago
Read 2 more answers
Please help I will fail
Mandarinka [93]

Answer:

6. A

7. C

8. B

9. The average speed is the distance (a scalar quantity) per time ratio. Speed is ignorant of direction. The average velocity is the displacement or position change (a vector quantity) per time ratio.

4 0
3 years ago
If we decrease the amount of force, and keep all other factors the same, what will happen to the amount of work? The amount of w
Harrizon [31]

Answer: the amount of work will increase.

Explanation: ur welcome

3 0
2 years ago
The flaming gorge bridge, in wyoming rises above a dry gulch. If you throw a rock straight out from the bridge, horizontally, an
Novosadov [1.4K]

Answer:

12.495m/s

Explanation:

Horizontal displacement is the range of the projectile motion.

The range is expressed as;

R = 2U/g

U is the speed at which the rock is thrown (initial speed)

g is the acceleration due to gravity.

Given

R = 255cm = 2.55m

g = 9.8m/s²

Required

Speed U

Substitute the given parameters into the formula as shown;

2.55 = 2U/9.8

Cross multiply

2U = 2.55×9.8

2U = 24.99

U = 24.99/2

U = 12.495m/s

Hence the speed that you thew the rock is 12.495m/s

7 0
2 years ago
Other questions:
  • In the summer of 2010 a huge piece of ice roughly four times the area of Manhattan and 500 m thick caved off the Greenland mainl
    8·1 answer
  • Imagine you are holding a small ball below you so that you look down on its "north pole." turn the ball in a counterclockwise di
    15·1 answer
  • Which statement describes the direction of spontaneous heat flow
    9·2 answers
  • ionic compounds molecules have almost strong forces of attraction between neighboring molecules. Which conclusion could be drawn
    12·1 answer
  • What is the effect of the absorption of infrared energy on matter?
    13·1 answer
  • Two colours of light which mix to make white light are called
    11·2 answers
  • This planet orbit around the sun cuts across the path of another planet.
    10·1 answer
  • In a physics lab, Ray Zuvlite arranges two mirrors with a right angle orientation as shown. Ray then directs a laser line at one
    9·1 answer
  • 17. A ball on the end of a string is
    11·1 answer
  • If you have a final velocity of 50 m/s and travelled for 120 seconds. What
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!