3 years ago

Which vector is the sum of the vectors shown below?

Physics

1 answer:

qaws [65]3 years ago

4 0

Where is the picture??

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Sirius A has a luminosity of 26 LSun and a surface temperature of about 9400 K.What is its radius?

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Answer

Given,

Sirius A surface temperature,T = 9400 K

Sirius A luminosity,L = 26 L₀

L₀ is the luminosity of sun.

Radius of sun = 695700000 m

Temperature on sun surface = 5780 K

Luminous intensity is given by:-

$L=4 \pi R^{2} \sigma T^{4}$

Now

$\frac{L}{L_{0}}=\frac{4 \pi R^{2} \sigma T^{4}}{4 \pi R_{0}^{2} \sigma T_{0}^{4}}=26$

$\Rightarrow \frac{R^{2} T^{4}}{R_{0}^{2} T_{0}^{4}}=26$

$\Rightarrow R^{2}=26 \times \frac{R^{2} T_{0}^{4}}{T^{4}}=26 \times \frac{695700000^{2} \times 5780^{4}}{9400^{4}}$

$R=1341246640\ m=1.34 \times 10^{9}$

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A piece having a length of 4.0 cm was cut from a much longer, uniform rod. The piece has a volume of 3.0 cm3 and a mass of 24 g.

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Explanation:

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3 years ago

A refrigerator has a mass of 88 kg. What is the weight of the refrigerator?

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2 years ago

What might be the result if cytokinesis occurred before mitosis

ira [324]

One of the two daughter cells wouldn't have a nucleus, which would result in the death of that cell, if not both. Hope this helps! ❤️

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3 years ago

If mass 1 is 2.0 m to the right of the fulcrum and weighs 4.0 kg, and mass 2 weighs 6.0 kg, what distance will mass 2 need to be

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C 1.33 m to the left

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