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Marianna [84]
3 years ago
9

Which statement is true about white dwarf?

Physics
2 answers:
kramer3 years ago
8 0

C is the correct answer

galben [10]3 years ago
6 0

White dwarf are very dense and small in size is a true statement.

Answer: Option C

<u>Explanation:</u>

A white dwarf also known as degenerate dwarf.  The white dwarf "mass is comparable to the Sun" and its "volume is comparable to Earth".

The white dwarf is a stellar whose size is near to the size of the earth. It had a gravitational collapse. The diameter of the white dwarf is just one percent of the Sun. It is extremely dense where there is no free space between the atoms.

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A 34-m length of wire is stretched horizontally between two vertical posts. The wire carries a current of 68 A and experiences a
il63 [147K]

Answer:

7.28×10⁻⁵ T

Explanation:

Applying,

F = BILsin∅............. Equation 1

Where F = magnetic force, B = earth's magnetic field, I = current flowing through the wire, L = Length of the wire, ∅ = angle between the field and the wire.

make B the subject of the equation

B = F/ILsin∅.................. Equation 2

From the question,

Given: F = 0.16 N, I = 68 A, L = 34 m, ∅ = 72°

Substitute these values into equation 2

B = 0.16/(68×34×sin72°)

B = 0.16/(68×34×0.95)

B = 0.16/2196.4

B = 7.28×10⁻⁵ T

7 0
3 years ago
A student investigated how the mass of water in an electric kettle affected the time taken for the water to reach boiling point.
Sedbober [7]

Answer:

1.because of the heat produced by the socat

2. they should have control how they placed the heater

3. because the water is to much

4.because is different from the question

5. because that is how the question is

4 0
3 years ago
As temperature increases, what happens to the density of ocean water? A. changes unpredictably B. decreases C. does not change D
Lelu [443]
As the temperature of water increases, the density of water will decrease.
4 0
3 years ago
Consider two celestial objects with masses m1 and m2 with a separation distance between their centers r. If the first mass m1 we
Scilla [17]

The new magnitude of the force of attraction will be 6 times the original force of attraction

<h3>How to determine the initial force </h3>
  • Mass 1 = m₁
  • Mass 2 = m₂
  • Gravitational constant = G
  • Distance apart = r
  • Initial force (F₁) = ?

F = Gm₁m₂ / r²

F₁ = Gm₁m₂ / r²

<h3>How to determine the new force </h3>
  • Mass 1 = 2m₁
  • Mass 2 = 3m₂
  • Gravitational constant = G
  • Distance apart (r) = r
  • New force (F₂) =?

F = Gm₁m₂ / r²

F₂ = G × 2m₁ × 3m₂ / r²

F₂ = 6Gm₁m₂ / r²

But

F₁ = Gm₁m₂ / r²

Therefore

F₂ = 6Gm₁m₂ / r²

F₂ = 6F₁

Thus, the new magnitude of the force of attraction will be 6 times the original force of attraction

Learn more about gravitational force:

brainly.com/question/21500344

#SPJ1

6 0
2 years ago
Please need help ASAP. Would really appreciate it.
a_sh-v [17]

if i renember correctly its b

3 0
3 years ago
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