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expeople1 [14]
2 years ago
6

Which term refers to how often a person works out?

Physics
1 answer:
Dafna11 [192]2 years ago
6 0

Answer: Frequency

Explanation: Frequency is term which best describes how often a person exercises.

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In a lightning bolt, a large amount of charge flows during a time of 1.2 x 10-3 s. Assume that the bolt can be represented as a
ohaa [14]

Answer: 10.58 C has flowed during the lightning bolt

Explanation:

Given that;

Time of flow t = 1.2 × 10⁻³

perpendicular distance r = 21 m

Magnetic field B = 8.4 x 10⁻⁵ T

Now lets consider the expression for magnetic field;

B = u₀I / 2πr

the current flow is;

I = ( B × 2πr ) / u₀

so we substitute

I = ( (8.4 x 10⁻⁵) × 2 × 3.14 × 21 ) / 4π ×10⁻⁷

=  0.01107792 / 0.000001256

= 8820 A

Hence the charge flows during lightning bolt  will be;

q = It

so we substitute

q = 8820 × 1.2 × 10⁻³

q = 10.58 C

therefore 10.58 C has flowed during the lightning bolt

6 0
3 years ago
5. Dry ice is an example of _________, which is the process of a solid turning directly into a gas. (1 point) precipitation melt
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sublimation


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7. Which of the following is the boiling point of water? (1 point)
 
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6 0
3 years ago
A metal object with a mass of 19g is heated to 96c, then transferred to a calorimeter containg 75g of water at 18c. the water an
avanturin [10]

Let us say that Cp is the specific heat of the metal object. Then we do a heat balance (heat lost by metal = heat gained by water):

- 19g * Cp * (22degC – 96degC) = 75g * 4.184J/g degC * (22degC – 18degC)

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6 0
3 years ago
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Which level of the energy pyramid contains the most energy​
Anestetic [448]

Answer:

lowest level contains more energy

Explanation:

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Why does the Moon appear red during a lunar eclipse?
dem82 [27]

Answer:

Image result for Why does the Moon appear red during a lunar eclipse?

A lunar eclipse takes place when the sun, Earth and moon line up in space. The moon passes through Earth's shadow. ... Bottom line: The moon can look red during a total lunar eclipse because of sunlight that's filtered and refracted by Earth's atmosphere

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2 years ago
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