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4 years ago

True or false air contains 78 percent hydrogen, 21 percent oxygen, and 0.03 percent carbon dioxide

Physics

1 answer:

LiRa [457]4 years ago

3 0

The answer you are looking for is false

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Jane has a mass of 55 kg and his body covers 700 nails with a surface area of 1.00 mm,

Oksana_A [137]

We have,

Jane mass is 55 kg
His body covered with 700 nails all of them having a surface area of 1.00 mm² each = 700 × 1 = 700 mm² = 700/1000000 = 7/10000

We know that,

Pressure = Force/Area

Let's calculate force as we already have area;

F = ma
F = 55 × 9.8 { Acceleration due to gravity }
F = 539 N

Now, if should she would be on 700 nails then pressure will be;

P = F/A
P = 539/7 × 10000
P = 5390000/7
P = 770,000 Pascal

And if should would be on a 1 nail only,

P = F/A
P = 539/1 × 1000000
P = 539000000 Pascal

As, you can notice yourself that the pressure will be so high with only 1 nail and because of this, nail will pass through jane's body.

6 0

3 years ago

A student is given a red and a blue liquid. The two samples of liquids are

topjm [15]

<h3>Option D) The red liquid has a smaller specific heat</h3>

When a substance has smaller specific heat it needs less heat to shows changes in it hence making the option D correct.

3 0

3 years ago

Read 2 more answers

HOW MANY PIES DOSE IT TAKE TO GET TO THE MOON

Schach [20]

i do not have an answer because it depends on the size and the distance lol

8 0

3 years ago

Which of these ideas was part of the earliest model of the atom?

babymother [125]

I think the answer is D

4 0

3 years ago

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What's the minimum Out PUT WORK required to raise 14,0m3 of water 26.0m?

BartSMP [9]

Answer:

3.57 MJ

Explanation:

ASSUMING it's fresh water with density of 1000 kg/m³

W = ΔPE = mgΔh = 14.0(1000)(9.81)(26.0) = 3,570,840 J

Salt water would require more.

3 0

3 years ago