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
12345 [234]
3 years ago
7

What is hydrostatic equilibrium in a star? a) The balance between radiation from the surface and the rotation rate b) The expans

ion of the core when it is heated c) The increase in the rate of fusion when the star runs out of hydrogen d) The balance between the force of gravity directed in and thermal pressure directed.
Physics
1 answer:
Dahasolnce [82]3 years ago
6 0

Answer: d) The balance between the force of gravity directed in and thermal pressure directed

Explanation:

Hydrostatic Equilibrium helps to put in perspective star as self- regulating systems . It makes it plain that the energy generated in the star's hot core, is carried outward towards the cooler surface.

You might be interested in
What is the de Broglie wavelength of an object with a mass of 2.50 kg moving at a speed of 2.70 m/s? (Useful constant: h = 6.63×
xxMikexx [17]

Answer:

9.82 × 10^{-35} Hz

Explanation:

De Broglie equation is used to determine the wavelength of a particle (e.g electron) in motion. It is given as:

λ = \frac{h}{mv}

where: λ is the required wavelength of the moving electron, h is the Planck's constant, m is the mass of the particle, v is its speed.

Given that: h = 6.63 ×10^{-34} Js, m = 2.50 kg, v = 2.70 m/s, the wavelength, λ, can be determined as follows;

λ = \frac{h}{mv}

  = \frac{6.63*10^{-34} }{2.5*2.7}

 = \frac{6.63 * 10^{-34} }{6.75}

 = 9.8222 × 10^{-35}

The wavelength of the object is 9.82 × 10^{-35} Hz.

4 0
3 years ago
Any transparent material that allows light of only certain color to pass through is called a filter . true or false
Dahasolnce [82]

it is TRUE hope this helps

7 0
3 years ago
When did galileo discover projectile motion?
Tcecarenko [31]
Between 1589-1592 when he discovered projecctile motion
4 0
2 years ago
A silver tea spoon is placed in a cup filled with hot tea. After some time, the exposed end of the spoon becomes hot even withou
EastWind [94]

Answer:

As atoms in the spoon vibrates about their equilibrium positions and transfer energy form one end to other end. This process is called conduction.

4 0
2 years ago
Which of the following are not units of frequency: Hertz. m/s. waves/s
ra1l [238]

The answer is waves.

8 0
3 years ago
Other questions:
  • Which acceleration does the force of earth’s gravity produce?
    10·1 answer
  • Pitch describes the loudness of a sound. <br> True False?
    5·1 answer
  • On a Vernier Caliper, how do you know which mark to use on the very top scale?
    6·1 answer
  • airground ride spins its occupants inside a flying saucer-shaped container. If the horizontal circular path the riders follow ha
    11·1 answer
  • At 250 °C, the equilibrium constant Kp for the reaction PCl5 (g) PCl3 (g) + Cl2 (g) is 1.80. Sufficient PCl5 is put into a react
    9·1 answer
  • A distance between two consecutive troughs in a wave motion train produced in a string is 5 cm. Find speed of wave , if two comp
    12·1 answer
  • 50 points Two waves combine with constructive interference. What must be true of the
    12·2 answers
  • The place below earth's surface where the earthquake begins.
    10·1 answer
  • Juan compró un carro que dicen que es muy rápido. Cuándo lo probó recorrió una distancia de 4500m en tan solo 5 min. ¿Qué veloci
    11·1 answer
  • A skateboarder is traveling at a velocity of 8 m/s. She slows down and comes to a stop in 4 seconds. Calculate the skater’s acce
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!