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Gre4nikov [31]
4 years ago
11

What type of energy I’d converted into machanical energy when a person walks

Physics
1 answer:
Ainat [17]4 years ago
5 0

Which type of energy is converted into mechanical energy when a person walks?

A. Electromagnetic  

B. Electrical

C. Nuclear  

D. Chemical

That is Chemical, This is because the energy comes from the food we eat and our fat stores and thus it comes from a chemical form.


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When must batteries in an emergency locator transmitter (ELT) be replaced or recharged, if re-chargeable?
tatiyna

Answer:

After one half of the battery's useful life.

Explanation:

Batteries of the emergency locator transmitter (ELT) must be replaced or recharged after one half of the battery's useful life because if it is exposed to the high temperature for a long period of time such as the air plane parked in the sun will result in the deterioration of battery which may makes the transmitter out of order before the expiry  date of the battery. So it will be safe to do that after the use of one half of the battery's life.

6 0
3 years ago
पुस्तक विक्रेता ने वीपीपी द्वारा आपको पुस्तक भेजी है?? धन्यवाद देते हुए पत्र लिखिए।
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3 0
3 years ago
Is moment a scalar or vector quantity ? Explain please.
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3 years ago
How much energy is stored by the electric field between two square plates, 6.1 cm on a side, separated by a 3.5 mm air gap? The
Serggg [28]

Answer:

7.6\times 10^{-6} J

Explanation:

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E = \frac{\sigma}{2\epsilon}

Where sigma is the superficial charge density and epsilon is the permittivity of air (is about the same as vaccum)

\sigma = \frac{Q}{Area}= \frac{530 \times 10^{-6} C}{(0.061m)^2} = 0.14C/m^2

Using the formula to determine the electric field.

E = \frac{0.14C/m^2}{2\times 8.84 \times 10^{-12}C^2N^{-1}m^{-2}}\\E = 8.06 \times 10^9 N/C

The energy inside the plates is given by the energy density due to electric Field times the volume:

Energy = \rho_{E} \times V = \frac{1}{2}\epsilon E V\\

The volume is equal to the area of the plates times the distance between them:

Energy = \frac{1}{2}8.82\times 10^{-12}C^2 N^{-1}m^{-2} \times 8.06 \times 10^9 N/C \times (0.061m)^2\times 0.0035m\\Energy = 7.6 \times 10^{-6} J

5 0
3 years ago
Calculate the change in time for each quarter of the
snow_tiger [21]

Answer:

The change in time for the first quarter is  seconds.  = 2.07

The change in time for the second quarter is  seconds.

=1.09

The change in time for the third quarter is  seconds.

=0.95

The change in time for the fourth quarter is  seconds.=0.81

Explanation:

Hope this helped.

6 0
2 years ago
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