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Llana [10]
2 years ago
10

Why are white dwarf supernovae more useful than massive star supernovae for measuring cosmic distances?

Physics
1 answer:
Ann [662]2 years ago
3 0

Answer: White dwarf supernovae all have roughly the same true peak luminosity

Explanation:

did it last year

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The blank approach emphasizes the scientific study of observable actions and/or responses and their environmental determinants
lakkis [162]

Answer:

"behavioral" is the right answer.

Explanation:

  • The behavioral approach would be founded on the principle of generating information thru all the extrapolation as well as the believing which our ecosystem might be what tends to create us to differ greatly as well as experience severe sickness.
  • Throughout several other phrases, it is indeed an analysis of the relationship among both our thoughts as well as our attitudes or actions.
8 0
3 years ago
Ions are unequally distributed across the plasma membrane of all cells. This ion distribution creates an electrical potential di
nekit [7.7K]

Answer: Resting Membrane Potential

Explanation:

The <u>resting membrane potential</u> refers to the difference in voltage between the inside and outside of the cell membrane when the cell is at physiological rest. It should be noted that <u>the cell membrane is a selective semipermeable barrier, which only allows the transit through it of certain molecules and prevents the transit of others. </u>

This selectivity causes an uneven distribution of charged particles (ions), as the membrane only accepts some types of ions.

Now, in the case of neurons, which are electrically excitable nerve cells; the transport of electrical signals is due to these changes in the permeability and asymmetric distribution of ions (mainly sodium and potassium) when the neuron is not excited (at rest).

4 0
3 years ago
Newton measured the centripetal acceleration of the moon in its orbit around Earth by comparing the force Earth exerts on the mo
telo118 [61]

Answer:

G = 6.64*10^{-11} Nm^2/kg^2

Explanation:

According to Newton 2nd law of motion: F = ma where m is the mass of the moon and a is the centripetal acceleration of the gravitational force.

Also Gravitational force formula

F_g = G\frac{m*ME}{S^2} where G is the gravitational force, ME is the mass of Earth and S is the mean distance between Earth and Moon.

As the moon is at constant circular motion around Earth, there forces balance out:

F = F_g

ma = G\frac{m*ME}{S^2}

G = \frac{S^2*a}{ME}

We can now substitute S = RME = 3.86*10^8 m and a = ac = 2.66*10^{-3} m/s^2 and ME = 5.97 * 10^{24} kg

G = \frac{(3.86*10^8)^2*2.66*10^{-3}}{5.97 * 10^{24}}

G = 6.64*10^{-11} Nm^2/kg^2

3 0
3 years ago
A cat stalks an unsuspecting mouse. The movement of the cat is shown in the following graph of the horizontal position, x, again
stellarik [79]

Answer:

0.25 m/s

Explanation:

Average velocity = change in displacement / change in time

v = (1.5 m − 2.5 m) / (6 s − 2 s)

v = -0.25 m/s

The average speed is 0.25 m/s.

3 0
3 years ago
What type of force is needed for motion to occur?
Molodets [167]

Answer:

Forces include gravity, friction, and applied force. Force causes changes in the speed or direction of motion. These changes are called acceleration

Explanation:

6 0
3 years ago
Read 2 more answers
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