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dolphi86 [110]
3 years ago
5

Eliza went for a swim. When she came out of the water, she felt cold. At the moment, a strong wind blew, and she felt even colde

r. Explain why did she felt even colder when a string wind blew.
Physics
1 answer:
yaroslaw [1]3 years ago
4 0
She did because when you are in water for a long period of time it might feel warm but when you come out it is going to feel cold again just like how you felt going in the water
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dimulka [17.4K]

Work done by force is given by formula

W = F.d

now here work done against friction is given so force of friction here is

F_f = 848 N

It moved by three corridors with each measures

d = 14.33 m

so total distance will be

s = 14.33 \times 3 = 43 m

now from above formula of work done we will say

W = 848 \times 43

W = 36464 J

so above is the work done to move three corridors

3 0
3 years ago
The mechanical advantage of a lever is 4 . what does it mean?​
boyakko [2]

Answer:

It means...

Explanation:

The mechanical advantage of a machine is 4. Mechanical advantage MA is the ratio of output (generated by the machine) force to input (applied to the machine) force. So MA = 4 means that for example if you apply 100 N then your machine will multiply that force and generate 400 N.

3 0
3 years ago
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Phases of the moon. Help!???????
Veseljchak [2.6K]

Answer:

The Lunar Month.

New Moon.

Waxing Crescent Moon.

First Quarter Moon.

Waxing Gibbous Moon.

Full Moon.

Waning Gibbous Moon.

Third Quarter Moon.

Explanation:

6 0
2 years ago
The least count of stopwatch is 0.2s.The time of 20 oscillations of a pendulum was measured to be 25s.Find the percentage error
Svet_ta [14]

Answer:

0.8%

Explanation:

We are given;

Number of oscillations; n = 20

Time taken; t = 25 s

Formula for period of oscillation;

T = t/n = 25/20 = 1.25 s

We are told that the least count is 0.2 s. Thus, error is; ΔT = 0.2 s

percentage error in the measurement of time is given by;

(0.2/(20 × 1.25)) × 100% = 0.8%

4 0
2 years ago
An alternating current is supplied to an electronic component with a rating that the voltage across it can never, even for an in
Vsevolod [243]

Answer:

A) V_{rms}=8\sqrt{2} V

Explanation:

Maximum voltage =V_{max}=16 V

Maximum voltage and rms voltage are related to each other by

V_{max}=V_{rms} \times \sqrt{2} \\V_{rms}=\frac{V_{max}}{ \sqrt{2}}\\V_{rms}=\frac{16}{\sqrt{2}} \\V_{rms}=8\sqrt{2} V

7 0
3 years ago
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