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
oksian1 [2.3K]
3 years ago
11

Before a star is born, the matter that will become the star exists as a

Physics
2 answers:
vazorg [7]3 years ago
6 0

Answer:

The answer is D

Explanation:

I'm too lz to explain everything.

sorry.

zloy xaker [14]3 years ago
3 0

Answer:

The answer is D) cool, dark nebula

Explanation:

You might be interested in
Who invented the first telescope​
mylen [45]

Answer:

Hans Lipperhey

....................................

5 0
2 years ago
Read 2 more answers
What is the current
Art [367]

Answer:

2.5mA

Explanation:

In the picture.

I think it's a clear.

8 0
2 years ago
A force of 30.0 N is applied to a 3.00 kg object for 3.00 seconds. Calculate the velocity experienced by the object.
olganol [36]

Answer:

Explanation:

F = ma and

a=\frac{v}{t}

We have F, we have m, but in order to solve for v, we need a.

30.0 = 3.00a so

a = 10.0 m/s/s. Plug that in for a in the second equation and solve for v:

10.0=\frac{v}{3.00} so

v = 10.0(3.00) so

v = 30.0 m/s

6 0
2 years ago
Explain why a black and white aeronautical map would be difficult to use
Aneli [31]

Aeronautical maps are usually meant to be used by pilots and air aviation professionals in other to navigate or traverse though the sky. With various elements such as vegetation, hills, valleys being depicted by color coded keys or legend. Hence, the absence of color on an aeronautical map make the <em>representation of elements very difficult</em>.

Visual map interpretation is usually aided by the use of legends. The legend hold the key to the elements which are represented on the map. Usually, a combination of colors and shapes makes up the legend and makes map interpretation easy.

Therefore, the absence of various color palletes for representation on a black and white aeronautical map will make it difficult to use.

Learn more : brainly.com/question/25323763

5 0
2 years ago
A 20.0-N weight slides down a rough inclined plane which makes an angle of 30 degree with the horizontal. The weight starts from
Ulleksa [173]

Answer:

1270.64\ \text{J}

Explanation:

m = Mass of object = \dfrac{mg}{g}

mg = Weight of object = 20 N

g = Acceleration due to gravity = 9.81\ \text{m/s}^2

v = Final velocity = 15 m/s

u = Initial velocity = 0

d = Distance moved by the object = 150 m

\theta = Angle of slope = 30^{\circ}

f = Force of friction

fd = Work done against friction

The force balance of the system is

\dfrac{1}{2}m(v^2-u^2)=(mg\sin\theta-f)d\\\Rightarrow \dfrac{1}{2}mv^2=mg\sin\theta d-fd\\\Rightarrow fd=mg\sin\theta d-\dfrac{1}{2}mv^2\\\Rightarrow fd=20\times \sin 30^{\circ}\times 150-\dfrac{1}{2}\times \dfrac{20}{9.81}\times 15^2\\\Rightarrow fd=1270.64\ \text{J}

The work done against friction is 1270.64\ \text{J}.

8 0
3 years ago
Other questions:
  • What is the kinetic energy of an object that has a mass of 50.0kg and a velocity of 18 m/s?
    6·1 answer
  • Balanced forces act on a ball that is being held above the ground in someone's hand. explain why these forces on the ball are ba
    11·1 answer
  • Einstein and lorentz, being avid tennis players, play a fast-paced game on a court where they stand 19.0 m from each other. bein
    7·1 answer
  • The temperature of a sample of silver increased by 24.0 °C when 269 J of heat was applied. What is the mass of the sample?
    11·1 answer
  • The electromagnetic wave that CT scans are based on is called
    9·2 answers
  • What force is necessary to accelerate a 1050 kg car at a rate of 10 m/s2?
    5·1 answer
  • Help me ultra sound vs infrasound
    6·1 answer
  • Can two objects exert a force on each other without touching? example
    5·1 answer
  • What is the magnitude of the displacement?
    11·1 answer
  • Q3, A ball of mass 5.0 kg moving with a Velocity of 10.0 ms collides
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!