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Yanka [14]
3 years ago
15

Identify which type of scientist would use spectroscopy for each purpose. Identification of the composition of the sun and stars

:
Determination of chemical bonds:
Prediction of the efficiency of possible laser materials:
Identification of harmful bacteria in food and environmental samples:
Physics
2 answers:
adelina 88 [10]3 years ago
7 0

Answer:

Identification of the composition of the sun and stars:  An astronomer

Determination of chemical bonds:  A chemist

Prediction of the efficiency of possible laser materials:  A physicist

Identification of harmful bacteria in food and environmental samples: A biologist

Explanation:

Alina [70]3 years ago
5 0

Answer:

1. Astronomer

2. A chemist

3. a physcist

4. a Biologist

Answers on edg

Explanation:

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The vector product of vectors A⃗ and B⃗ has magnitude 12.0 m2 and is in the +z-direction.Vector A⃗ has magnitude 4.0 m and is in
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Answer:

θ=180°

Explanation:

The problem says that the vector product of A and B is in the +z-direction, and that the vector A is in the -x-direction. Since vector B has no x-component, and is perpendicular to the z-axis (as A and B are both perpendicular to their vector product), vector B has to be in the y-axis.

Using the right hand rule for vector product, we can test the two possible cases:

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  • If vector B is in the -y-axis, the product AxB should be in the +z-axis. This is the correct option.

Now, the problem says that the angle θ is measured from the +y-direction to the +z-direction. This means that the -y-direction has an angle of 180° (half turn).

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Answer:

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Explanation:

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Answer:

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