The light-collecting area of the 10-meter Keck telescope is <u>4 times greater </u>than the light-collecting area of the 5-meter Hale telescope.
Why?
We can calculate the light-collecting area of a telescope by using its diameter/radius. To do that, we can use the following formula:
Now, to know how much greater is the collecting area of the 10-meter keck telescope compared to the collecting area of the 5-meter hale telescope, we need to calculate their light-collecting areas and compare them.
For the 10-meter keck telescope, we have:
For the 5-meter hale telescope, we have:
Now, comparing the areas, we have:
Hence, we have that the light-collecting area of the 10-meter keck telescope is 4 times greater than the light-collecting area of the 5-meter hale telescope.
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Answer:
Сила тока 0.994 А
Explanation:
Параметры приведены ниже;
Время = 4 часа = 14 400 с
Масса выпущенного серебра = 16 г
Электрохимический эквивалент серебра = 1,118 мг / с
Формула для количества электричества Q дается следующим образом;
Q = I × t
Куда;
I = ток (A)
t = время в секундах, с
Масса m, образующаяся при электролизе, определяется соотношением;
Куда;
= Электрохимический эквивалент серебра = 1,118 мг / с
м = 16 г
Подставляя значения, мы имеем;
Который дает;
Следовательно, сила тока = 0,994 А.
Power = work / time --> time = work / power = 3600 J / 275 watts = 13.1 seconds.
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Answer:
D) kg*m/s^2
Explanation:
One newton is the force needed to accelerate one kilogram of mass at the rate of one metre per second squared in the direction of the applied force.
Answer:
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