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
il63 [147K]
3 years ago
6

What is the approximate surface temperature of the 'White Dwarfs'?.

Physics
1 answer:
HACTEHA [7]3 years ago
6 0

Answer:

5,000-10,000 K

Explanation:

make me your brainlist pls

You might be interested in
Solve the last question
shusha [124]

The equation of the last question which is 3CO2 + 4H2O has a total of 21 atoms with the following number of atoms of each element:

C= 3

C= 3H = 8

C= 3H = 8O = 10.

<h3>What is a chemical formula?</h3>

A chemical formula is defined as the expression that is used to show the chemical symbol of and element in a chemical compound and the number of atoms of those elements.

There are three main type of formula that include the following:

  • Empirical formula : This is the type of chemical formula that shows the simplest whole-number ratio of atoms in a compound.

  • Molecular formula: This is the type of chemical formula that shows the number of each type of atom in a molecule.

  • Structural formula: This is the type of chemical formula that shows how this atoms of each element are bonded together.

The given chemical formula above is a molecular formula that contains the following number of atoms per elements:

C= 3

C= 3H = 8

C= 3H = 8O = 10. Which is a total of 21 ( green)

Learn more about chemical formula here:

brainly.com/question/26388921

#SPJ1

6 0
1 year ago
If you go to the beach on a hot summer day, the temperature of the sand is much higher than the temperature of the water. If we
guapka [62]
Water has a higher specific heat so it requires more energy to heat than sand.
7 0
3 years ago
Read 2 more answers
What is the net force acting on a falling object when it reaches terminal velocity? a force equal to gravity 9.8 m/s2 two times
Leno4ka [110]

Answer:

The net force is zero

Explanation:

When an object is falling, there are two forces acting on it:

- The force of gravity, which is equal to the weight of the object, which pushes the object downwards

- The air resistance, which acts against the motion of the object, so it pulls upward

While the magnitude of the force of gravity is constant, the magnitude of the air resistance increases as the velocity of the falling object increases: at some point of the motion, the air resistance becomes equal in magnitude to the force of gravity. At this point, the net force on the object becomes zero, and according to Newton's second law, the acceleration of the object becomes also zero:

F=ma

But zero acceleration means that the velocity of the object is now constant: this is known as terminal velocity.

5 0
3 years ago
A tin can has a volume of 1100 cm³ and a mass of 80 g. Approximately how many grams of lead shot can it carry without sinking in
Kruka [31]

Answer:

1020g

Explanation:

Volume of can=1100cm^3=1100\times 10^{-6}m^3

1cm^3=10^{-6}m^3

Mass of can=80g=\frac{80}{1000}=0.08kg

1Kg=1000g

Density of lead=11.4g/cm^3=11.4\times 10^{3}=11400kg/m^3

By using 1g/cm^3=10^3kg/m^3

We have to find the mass of lead which shot can it carry without sinking in water.

Before sinking the can  and lead inside it they are floating in the water.

Buoyancy force =F_b=Weight of can+weight of lead

\rho_wV_cg=m_cg+m_lg

Where \rho_w=10^3kg/m^3=Density of water

m_c=Mass of can

m_l=Mass of lead

V_c=Volume of can

Substitute the values then we get

1000\times 1100\times 10^{-6}=0.08+m_l

1.1-0.08=m_l

m_l=1.02 kg=1.02\times 1000=1020g

1 kg=1000g

Hence, 1020 grams of lead shot can it carry without sinking water.

4 0
4 years ago
A 0.45 kg soccer ball changes its velocity by 20.0 m/s due to a force applied to it in 0.10 seconds. What force was necessary fo
frutty [35]

Answer:

90 N

Explanation:

The force applied to the ball is given by:

F=\frac{\Delta p}{\Delta t}

where

\Delta p is the change in momentum of the ball

\Delta t is the time taken

The change on momentum of the ball is:

\Delta p=m\Delta v=(0.45 kg)(20 m/s)=9 kg m/s

So, the force applied is

F=\frac{9 kg m/s}{0.10 s}=90 N

6 0
3 years ago
Read 2 more answers
Other questions:
  • A turbine blade rotates with angular velocity ω(t) = 2.00 rad/s- 2.1.00 rad/s3 t2. What is the angular acceleration of the blade
    10·1 answer
  • Which causes an object to have inertia
    5·1 answer
  • All of the following are very helpful when identifying evidence of past living plants except
    15·1 answer
  • Earth’s surface is subjected to unusually high rates of weathering. The Moon and some of the inner planets of our solar system a
    12·1 answer
  • When air is heated it expands and ________. when air is heated it expands and ________. contracts burns lowers its pressure sink
    6·1 answer
  • Guys how do we study for physics
    7·1 answer
  • Explain a situation in which a lighter object would take more work to move than a heavier object
    5·1 answer
  • Give two<br> ways the skaters may be<br> accelerating
    12·1 answer
  • 6. 498.82 mg comverted to kg​
    10·2 answers
  • Which statement accurately describes a relationship between two parts of the universe?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!