Which provides evidence of universe expansion that supports the Big Bang Theory? Select the three correct answers. (2 points)
1 answer:
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Answer:
m = 2.2 x 10⁻⁴ kg = 0.22 g
Explanation:
The surface tension of water is 0.072 N/m. So in order for the bug to avoid sinking, its weight per unit length of contact must be no more than the surface tension of water. Therefore,
where,
m = mass of bug = ?
g = acceleration due to gravity = 9.81 m/s²
L = Contact length = (contact length of each leg)(No. of Legs) = (5 mm)(6)
L = 30 mm = 0.03 m
Therefore,
<u>m = 2.2 x 10⁻⁴ kg = 0.22 g</u>
Answer:
So then we see that the final luminosity decrease by a factor of 625 so then the correct answer for this case would be:
B. Decreases by a factor of 625
Explanation:
For this case we can use the formula of luminosity in terms of the radius and the temperature given by:
Where L_i = initial luminosity, r= radius and T = temperature.
We know that we decrease the radius by a factor of 100 and the temperature increases by a factor of 2 so then the new luminosity would be:
So then we see that the final luminosity decrease by a factor of 625 so then the correct answer for this case would be:
B. Decreases by a factor of 625