3 years ago

Will give brainliest

Physics

2 answers:

grigory [225]3 years ago

8 0

Answer:

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:

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

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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.

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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

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4 years ago

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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.

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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

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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

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3 years ago

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