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3 years ago

The sun will probably end up as a white dwarf. How will it be different then from what it is today

Physics

1 answer:

just olya [345]3 years ago

6 0

Answer:

The differences that will be observed are;

1) The Sun will become faint and will no longer be yellow but rather appear white and will no longer be visible (become invisible) by unassisted vision as we can see the Sun today

2) The size of the Sun will shrink to a size comparable to the size of the Earth

3) The Sun will cool down and will no longer radiate as much heat

4) The nuclear reactions that generate energy on the Sun's will seize and the and the heat from the Sun will be from residual thermal energy

5) The core, which is the hottest part of the Sun will no longer be hydrogen but carbon and oxygen

Explanation:

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What is the equilibrium constant of pure water at 25C

Tcecarenko [31]

Answer:

1.0 x 10-14.

Explanation:

We then replace the term on the right side of this equation with a constant known as the water dissociation equilibrium constant, Kw. In pure water, at 25C, the [H3O+] and [OH-] ion concentrations are 1.0 x 10-7 M. The value of Kw at 25C is therefore

6 0

4 years ago

The function s(t) represents the position of an object at time t moving along a line. Suppose s (2 )equals 146and s (6 )equals

sineoko [7]

Answer:

v(t) = 27 units

Explanation:

The function s(t) represents the position of an object at time t moving along a line such that,

$s(2)=146$

and

$s(6)=254$

We need to find the average velocity of the object over the interval of time [2,6]. The velocity of the object is equal to the total distance divided by time. It is given by :

$v(t)=\dfrac{s(6)-s(2)}{6-2}$

$v(t)=\dfrac{254-146}{6-2}$

v(t) = 27 units

So, the average velocity of the object is 27 units. Hence, this is the required solution.

5 0

3 years ago

what is the period of a sound wave whose wavelength is 20.0m? use values from the book and show all of your work

Lera25 [3.4K]

The wavelength of a sound wave is related to its frequency by the relationship:
$f= \frac{v}{\lambda}$
where
f is the frequency
v is the speed of the wave
$\lambda$ is the wavelength

The wave in our problem has wavelength of $\lambda=20.0 m$ and speed of $v=343 m/s$ (this is the speed of sound in air), therefore its frequency is
$f= \frac{343 m/s}{20.0 m}=17.15 Hz$

And the period of the wave is equal to the reciprocal of its frequency:
$T= \frac{1}{f}= \frac{1}{17.15 Hz}=0.058 s$

5 0

4 years ago

A cylindrical fishing reel has a mass of 0.7 kg and a radius of 5.24 cm. A friction clutch in the reel exerts a restraining torq

Korolek [52]

Answer:

Explanation:

moment of inertia of reel = 1/2 mr² , m is mass and r is radius of the reel

= .5 x .7 x .0524²

= 96.1 x 10⁻⁵

If force required be F

F x .0524 - 1.88 is net torque acting on the reel

F x .0524 - 1.88 = moment of inertia x angular acceleration.

F x .0524 - 1.88 = 96.1 x 10⁻⁵ x 65.7

F x .0524 - 1.88 = .063

F x .0524 = .063 + 1.88

F = 37.08 N

7 0

3 years ago

PtichkaEL [24]

<h3>Option A can be correct because when the meat is kept the rump settles down and the meat is prevented from being messy everywhere.</h3>

4 0

3 years ago