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Hitman42 [59]
3 years ago
10

Help please is for today

Physics
1 answer:
My name is Ann [436]3 years ago
3 0

Answer:

All of the above.

Explanation:

A person is said to be at rest when he or she is not performing any action. The heartbeat stays normal in this condition.

A person is said to perform a moderate activity when his heart beats faster than the normal rest condition. It requires extra effort within the limit. For example, walking and dancing are examples of moderate activity.

A person is said to perform a vigorous activity when his heart beats much than in moderate activity. It requires a lot of effort over the limit. Running is an example of vigorous activity.

In view of the above information, all the options given in the question are true. Hence, the correct answer will be:

<u>All of the above.</u>

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I should be V or E I am not sure what you mean by unit.

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A hollow cylindrical (inner radius = 1.0 mm, outer radius = 3.0 mm) conductor carries a current of 80 A parallel to its axis. Th
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Answer:

The magnetic field is   B =  3 mT

Explanation:

From the question we are told that

     The inner radius is  r_i  = 1.00 mm =1*10^{-3} \ m

      The outer radius is  r_2 =  3.00 \ mm =  3.0 *10^{-3} \ m

       The distance from the axis of the conductor is d  =2.0 \ mm =  2.0 *10^{-3} \ m

      The current carried by the conductor is  I  =  80 A

According to Ampere's circuital law , the magnetic field at a point that is  r_3  from the axis of the conductor

                  B =  \frac{\mu_oI}{2 \pi d } [\frac{d - r_1}{r_2 -r_1} ]

Where \mu_o is the permeability of free space with a value of \mu_o =  4 \pi *10^{-7}  N/A^2

substituting values

                  B =  \frac{(4 \pi *10^{-7})(80)}{2 * 3.142 * 2 *10^{=3} } [\frac{(2^2 - 1 ^2 )*10^{-3}}{(3^2 - 1^2) *10^{-3}} ]

                 B =  3 mT

         

5 0
4 years ago
According to the diagram of the electromagnetic spectrum shown, what would best represent the
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The  best represent the size of visible light will be C. Protozoa

The electromagnetic spectrum, gives the overall distribution of electromagnetic radiation by the  frequency or wavelength. All EM waves travel at the speed of light in a vacuum, but over a wide range of frequencies, wavelengths, and photon energies.

Visible light wavelengths cover the range of approximately 0.4 to 0.7 μm. electromagnetic spectrum that the human eye can see is the Visible light. Visible light is a form of electromagnetic (EM) radiation, along with radio waves, infrared, ultraviolet, X-rays, and microwaves. the wavelengths that are visible to most human eyes is generally known as Visible light

the best represent the size of visible light is Protozoa, According to the diagram of the electromagnetic spectrum shown,

Learn more about electromagnetic spectrum here brainly.com/question/25847009

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