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Vikentia [17]
3 years ago
5

Which of the following is an advantage of sexual reproduction is that

Physics
1 answer:
Ann [662]3 years ago
3 0
A) produces offspring with variations
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From the food they take in
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For what angle of incidence at the first mirror will this ray strike the midpoint of the second mirror (which is s=29.0cm long)
Lesechka [4]

The question is missing a diagram of the ray reflection. I attached a diagram which comes from a similar question in the answer section. The full question should be as follows:

Two plane mirrors intersect at right angles. A laser beam strikes the first of them at a point d = 10.0cmfrom their point of intersection, as shown in the figure. For what angle of incidence at the first mirror will this ray strike the midpoint of the second mirror (which is s=29.0cm long) after reflecting from the first mirror?

Answer:

34.6°

Explanation:

To strike the midpoint of the second mirror, the ray light will have to travel half of the distance vertically

i.e. 29/2 = 14.5

We can solve this through trigonometry.

Let the angle between the ray and the vertical plane mirror is known as α

tan α = 10/14.5

α = tan^{-1} (10/14.5) = 34.6°

The angle of incidence is the angle between the ray and the normal line of the mirror.

Let angle of incidence of first mirror be β

β = α = 34.6

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3 years ago
Which of the following best describes what went wrong with the scientists’ study? an improper experimental procedure the lack of
Rasek [7]
B- lack of control.

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If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fil
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round the corners of the magnet that where it is stronger

hope this helps :)

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What is the speed of an object at rest
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The speed of an object is measured by calculating the distance it travels per unit time.
The formula in Physics for calculating speed is = distance/ time.

Since an object at rest is not covering any distance, the speed is always assumed to be 0 m/s.
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3 years ago
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