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3 years ago

PLzzzzzzzzzzzz helppppppppp I NEEDSSSS HELPPP!!!!!!!!!!!

Physics

1 answer:

Marta_Voda [28]3 years ago

7 0

Answer:

B. Planets orbit a star, while moons orbit a planet

Explanation:

Every planet must orbit a star, like how the Earth orbits the Sun (the star of our solar system). Our moon orbits Earth. On other planets, there can be dozens of moons orbiting it.

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Ohm's Law for electrical circuits is stated VequalsRI, where V is a constant voltage, R is the resistance in ohms and I is the

Annette [7]

Answer:

The resistance interval is $R = 1.8 \pm 0.037$

Explanation:

From the question we are told that

The voltage is V = 9 V

The current is $I = 5 \pm 0.1$

The maximum current would be

$I_{max} = 5 + 0.1 = 5.1 \ A$

The minimum current would be

$I_{min} = 5 - 0.1 = 4.9 \ A$

The maximum resistance is

$R_max = \frac{V}{I_{min}}$

$R_max = \frac{9}{4.9}$

$R_max = 1.837 \Omega$

The minimum resistance is

$R_{min} = \frac{V}{I_{max}}$

$R_{min} = \frac{9}{5.1}$

$R_{min} = 1.765 \Omega$

and $R = \frac{9}{5} = 1.8 \Omega$

The interval R lies is

$R = 1.8 \pm 0.037$

4 0

3 years ago

the total mass of the sun is about 2×1030 kg, of which about 76 % was hydrogen when the sun formed. however, only about 14 % of

likoan [24]

The total amount of mass in the Sun is 2.0 x 10^30 kg, 5% of whig is hydrogen, and 13% of which becomes available for fusion. Thus, the total mass of hydrogen available for fusion over the Sun's lifetime is simply 13% of 75% of the total mass of the Sun or:

2.0 x 10^30 kg x .75 x .13

=<u> 1.95 x 10^29 kg</u>

<u />

Nuclear fusion occurs only in the core of the sun where temperature pressure and density are highest. The photosphere can be seen with visible light telescopes, the chromosphere with ultraviolet telescopes, and the corona most easily with X-ray telescopes.

The Sun is a typical star and also the closest star to the Earth. It is composed of 73% hydrogen, 25% helium, and 2% other elements. Since the gravitational pull of the sun on the earth is the centripetal force that causes the earth to move in a circular motion around the sun, we can use Newton's law of universal gravitation to find the mass of the sun without visiting it.

Learn more about The temperature here:- brainly.com/question/24746268

#SPJ4

3 0

1 year ago

5 Trajectoire d'un astéroïde

Allisa [31]

Answer:

black

Explanation:

looks like a ballsack

8 0

3 years ago