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
zhenek [66]
3 years ago
11

Stars are classified mainly according to their distance from Earth.

Physics
1 answer:
Zielflug [23.3K]3 years ago
4 0
 The answer is b) false. Stars are mainly classified by their spectra (the elements they absorb) and their temperature.
You might be interested in
It is possible a tree could fall down, even if no one did anything to it. A. True B. False
hichkok12 [17]

Answer:

This is TRUE

Explanation:

The tree can fall down even though no one did anything to it...

A hard breeze can blow and it can fall down or something else can cause it to topple...

Not only humans can make trees topple over...

<em>PLEASE</em><em> </em><em>DO MARK</em><em> </em><em>ME AS</em><em> </em><em>BRAINLIEST UWU</em><em> </em>

<em>Bonne journée</em><em> </em><em>;</em><em>)</em><em> </em>

8 0
3 years ago
If you were doing a research study on sleep and student achievement, which
jasenka [17]
Letter D: The amount of sleep a student gets affects student achievement
6 0
3 years ago
Read 2 more answers
Which best describes electrical energy? a. energy released by a chemical reaction b. energy produced by flow of electric charge
inessss [21]
<span> energy produced by flow of electric charge describes a electrical energy
because movement of electric charge do effect the work on system 
so correct option is B 
hope it helps</span>
4 0
3 years ago
Read 2 more answers
Guys please help me ​
Likurg_2 [28]

Answer:

1)t=2.26\: s

2)S=33.9\: m

3)v=26.77\: m/s

4)\alpha=55.92

Explanation:

1)

We can use the following equation:

y_{f}=y_{0}+v_{iy}t-0.5*g*t^{2}

Here, the initial velocity in the y-direction is zero, the final y position is zero and the initial y position is 25 m.

0=25-0.5*9.81*t^{2}

t=2.26\: s

2)

The equation of the motion in the x-direction is:

v_{ix}=\frac{S}{t}

15=\frac{S}{2.26}

S=33.9\: m

3)

The velocity in the y-direction of the stone will be:

v_{fy}=v_{iy}-gt

v_{fy}=0-(9.81*2.26)

v_{fy}=-22.17\: m/s

Now, the velocity in the x-direction is 15 m/s then the velocity will be:

v=\sqrt{v_{x}^{2}+v_{fy}^{2}}=\sqrt{15^{2}+(-22.17)^{2}}

v=26.77\: m/s

4)

The angle of this velocity is:

tan(\alpha)=\frac{22.17}{15}

\alpha=tan^{-1}(\frac{22.17}{15})

\alpha=55.92

Then α=55.92° negative from the x-direction.

I hope it helps you!

6 0
3 years ago
Hydrogen bonds are too weak to bind atoms together to form molecules, but they do hold different parts of a single large molecul
pogonyaev

Hydrogen bonds are too weak to bind atoms together to form molecules, but they do hold different parts of a single large molecule in a specific three-dimensional shape. The given statement is true.

<h3>What are hydrogen bonds?</h3>

A hydrogen bond is an electrostatic force of attraction among a hydrogen atom tightly attached to a more electronegative "donor" atom or group and another electronegative atom bearing a lone pair of electrons, known as the hydrogen bond acceptor.

Hydrogen bonds are too flimsy to connect atoms to form molecules, but they do hold various portions of a single large molecule together in a specific three-dimensional shape.

Thus, the given statement is true.

For more details regarding hydrogen bonding, visit:

brainly.com/question/10904296

#SPJ1

5 0
1 year ago
Other questions:
  • Help ASAP!!!!
    10·1 answer
  • What is the evaluation?
    11·1 answer
  • Acceleration can be found by computing the slope of a ________vs time graph
    9·1 answer
  • What is the change all living things undergo as the grow
    9·1 answer
  • If the change in position Dx is related to velocity v (with units of m/s) in the equation Dx=Av, the constant A has which dimens
    6·1 answer
  • What are different type of plastids explain them?​
    10·1 answer
  • Write the formulas of three important acids and three important bases. Describe their uses.
    14·1 answer
  • What is the increase in pressure required to decrease volume of mercury by 0.001%
    10·1 answer
  • Tim and Rick both can run at speed vr and walk at speed vw, with vr&gt;vw. They set off together on a journey of distance D. Ric
    10·1 answer
  • Give me an example of theory
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!