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11Alexandr11 [23.1K]
3 years ago
10

Will give brainliest

Physics
2 answers:
grigory [225]3 years ago
8 0

Answer:

C

Explanation:

Because the combination of energetic atoms and molecules create heat so you can cook your food

77julia77 [94]3 years ago
7 0

Answer:

D.

a heat force generated by the flames

Explanation:

Im not sure if that is right. the answer also maybe C.

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A sun-like star is barely visible to naked-eye observers on earth when it is a distance of 7.0 light years, or 6.6 * 1016 m, awa
igomit [66]

Answer:

At a distance of 1376.49 candle emits 0.2 watt power

Explanation:

Distance between Sun and earth 6.6\times 10^{16}m

Sun emits a power of P=3.8\times 10^{26}watt

Power emitted by candle = 0.20 watt

We know that brightness is given by

B=\frac{P}{4\pi d^2}

So \frac{3.8\times 10^{26}}{4\pi (6\times 10^{16})^2}=\frac{0.20}{4\pi d^2}

3.8\times 10^{26}d^2=7.2\times 10^{32}

d^2=1.89\times 10^6

d=1376.49m

So at a distance of 1376.49 candle emits 0.2 watt power

3 0
3 years ago
7. The Voyager 1 space probe was launched in the 1970's and is now the furthest
NikAS [45]

Answer:

v = 16.98 km/s

Explanation:

Given that,

Distance, d = 4500 km

Time, t = 265 s

We need to find its average speed. The total distance covered divided by total time taken is called average speed of an object. So,

v=\dfrac{4500\ km}{265\ s}\\\\=16.98\ km/s

So, the average speed is 16.98 km/s.

6 0
3 years ago
Gravity is affected by the ______
Alla [95]

C is the right answer :)

C. mass of the objects and the distance between two objects

4 0
4 years ago
Read 2 more answers
What instrument did navigators use to calculate the positions of the sun and the stars?
Taya2010 [7]
Navigators used astrolabes to calculate positions of the sun and stars.
8 0
4 years ago
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The equation T squared = A cubed shows the relationship between a planet’s orbital period, T, and the planets mean distance from
Nataly [62]

Answer:

orbital period increased by a factor of 2.83 unit

Explanation:

Given.

planet’s orbital period, T, and the planets mean distance from the sun, A, in astronomical units, AU

T²= A³

If A is increased by a factor of 2 , .

Then T will be increase with the factor of √2³ = 2.83

3 0
3 years ago
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