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Elis [28]
3 years ago
11

Protons and neutrons in an atom are held together by _____.

Physics
1 answer:
marysya [2.9K]3 years ago
7 0
Protons and neutrons in an atom are held together by a nuclear energy also called the strong force.
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A typical flying insect applies an average force equal to twice its weight during each downward stroke while hovering. Take the
Lelu [443]

Answer:

Average power output of insect is 2.42W

Explanation:

Workdone by constant force during displacement is given by:

W= F× d cos theta

Where theta is angle between F and d.

Power output due to the force over the interval time is given by:

P= Workdone/change in time

Ginen:

Mass of insect,m= 7.0g= 7/1000 = 0.07kg

Downward force applied by insect,F= 2mg

Distance moved by the wing each stroke=1.5cm=1.5/100= 0.015m

W= F× d cos theta

Where theta=0° since force is in the same direction as the displacement.

W= 2mg×d

W= 2× 0.07 × 9.8 × 0.015

W= 0.02058J

Power output = W/ change in time

Since wings make 117strokes each second time interval is 1/117 = 8.5×10^-3seconds

Power= 0.02058/(8.5×10^-3)

Power= 2.42W

6 0
2 years ago
What is the difference between deviation and incidence
yKpoI14uk [10]

Explanation:

<u><em>Deviation</em><em> </em><em>:</em><em> </em></u><em> </em>

It means the difference between a expected value of a measurement or an observation vs the actual value.

<em><u>Incidence</u></em><em><u> </u></em><em><u>:</u></em>

A straight line, ray of light, etc.., hits a surface at a point.

3 0
2 years ago
Read 2 more answers
1. Which of the following is an accurate statement? A. Step-down voltage transformers have a different number of turns in the pr
Snowcat [4.5K]
'C' is the only true statement on the list.

Step-up voltage transformers have a lower number of turns
in the primary than in the secondary winding.

4 0
3 years ago
A spring with a spring constant of 350 N/m pulls a door closed. How much work is done as the spring pulls the door at a constant
german

The work done to stretch the spring will be 112 J.

<h3>What is spring force?</h3>

The force required to extend or compress a spring by some distance scales linearly with respect to that distance is known as the spring force. Its formula is

F = kx

The given data in the problem is;

F is the spring force =?

K is the spring constant= 8.5 N/m

x is the length by which spring got stretched = 1.2m

The work is done to stretch the spring is;

\rm W= \frac{1}{2} kx^2 \\\\ W=\frac{1}{2} \times 350 \times (0.850-0.050)^2 \\\\ W=0.5 \times 350 \times (0.80)^2 \\\\W=112 \ J

To learn more about the spring force refer to the link;

brainly.com/question/4291098

#SPJ1

3 0
2 years ago
24- Which of the fallowing devices make use a lens
mezya [45]

Answer:

d.

Explanation:

all because the projector is a lens and the magnifying also the microscope

6 0
2 years ago
Read 2 more answers
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