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Lesechka [4]
3 years ago
13

HELP PLEASE HERE IS THE IMAGE

Physics
2 answers:
kari74 [83]3 years ago
3 0

Answer:

I am pretty sure it's E because it splits through every layer

Brums [2.3K]3 years ago
3 0
The answer is e good luck
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The process by which green plants convert light energy from the sun into chemical energy and food for use is known as - blank-
Basile [38]

Answer:

Photosynthesis

Explanation:

This process occurs in presence of sunlight, water, minerals, chlorophyll in autotrophs

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3 years ago
A child has an ear canal that is 1.3 cm long. At what sound frequencies in the audible range will the child have increased heari
ElenaW [278]

Answer:

The answer to this is

6600 Hz to 19,800 Hz

Explanation:

The shape of the human ear is analogous to a closed ended pipe hence

we have λ = 4L or wavelength = 4 * length of the child ear

The frequency  c/λ  where c = speed of sound = 343 m/s

hence the child's audible range is multiples of 343/(4*0.13) =6600Hz

or 13200 Hz or 19,800 Hz

The generally quoted range of human hearing is 20 Hz to 20 kHz

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3 years ago
Which of the following is an example of a main sequence star
Westkost [7]

The star is the main sequence

3 0
4 years ago
Read 2 more answers
When he reaches the bottom, 4.2 m below his starting point, his speed is 2.2 m/s . By how much has thermal energy increased duri
Advocard [28]

Complete question:

A fireman of mass 80 kg slides down a pole. When he reaches the bottom, 4.2 m below his starting point, his speed is 2.2 m/s. By how much has thermal energy increased during his slide?

Answer:

The thermal energy increased by 3,099.2 J

Explanation:

Given;

mass of the fireman, m = 80 kg

initial position of the fireman, hi = 4.2 m

final speed, v = 2.2 m/s

The change in the thermal energy is calculated as;

ΔE +  (K.Ef - K.Ei) + (Uf - Ui) = 0

where;

ΔE is the change in the thermal energy

K.Ef is the final kinetic energy

K.Ei is the initial kinetic energy

Uf is the final potential energy

Ui is the initial potential energy

\Delta  E_{th} +  (\frac{1}{2} mv_f^2 - \frac{1}{2} mv_i^2) + (mgh_f - mgh_i)=0\\\\initial \ velocity, \ v_i = 0\\final \ height , \ h_f = o\\\\\Delta  E_{th} + (\frac{1}{2} mv_f^2) + ( - mgh_i)=0\\\\\Delta  E_{th} +  \frac{1}{2} mv_f^2 - mgh_i = 0\\\\\Delta  E_{th} =mgh_i  - \frac{1}{2} mv_f^2\\\\\Delta  E_{th} =  80 \times 9.8 \times 4.2  \ \ - \ \ \frac{1}{2} \times 80 \times (2.2)^2  \\\\\Delta  E_{th} = 3292.8 \ J \ - \ 193.6 \ J\\\\\Delta  E_{th} = 3,099.2 \ J

3 0
3 years ago
Which of these is true about a magnetic field?
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The answer is <span>It points in the same direction as it would make a compass point.  In a magnetic field, t</span>he direction of the magnetic field at any location is described as the direction in which the north pole of a compass needle points at that location.
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4 years ago
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