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Allushta [10]
3 years ago
10

1. Only about

Physics
2 answers:
Tanya [424]3 years ago
8 0

Answer:

Hey mate.....

Explanation:

This is ur answer....

<h3>a. Less than 1% </h3>

<em>3% of the earth's water is fresh. 2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost. 0.5% of the earth's water is available</em><em> fresh water</em><em>.</em><em>.</em><em>.</em><em>.</em>

Hope it helps you,

Mark me brainliest plz....

Follow me! :D

lana [24]3 years ago
3 0

Question:

1. Only about % of water on Earth is fresh water that is readily available for human consumption.

a. less than 1

b. 5

c. more than 50

d. All water on Earth is fresh water and is easily accessible

Answer:

a. less than 1

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Nine steps for developing scientific principles are
xxTIMURxx [149]

Answer:

1)Observe a phenomenon

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3)Form a hypothesis

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6)Compare results

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Which of the following will increase if the voltage in a circuit is increased?A.The diameter of the wire.B.Resistance.C.Power.D.
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Which waves require a material medium for transmission? a.) light waves b.) radio waves c.) sound waves d.) microwaves
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mechanical waves require a medium

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3 years ago
A punter wants to kick a football so that the football has a total flight time of 4.70s and lands 56.0m away (measured along the
Sindrei [870]

Answer:

Explanation:

How long does the football need to rise?

4.70/3 = 2.35 s

What height will the football reach?

h = ½(9.81)2.35² = 27.1 m

With what speed does the punter need to kick the football?

vy = g•t = 9.81(2.35) = 23.1 m/s

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At what angle (θ), with the horizontal, does the punter need to kick the football?

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3 0
3 years ago
An auditorium measures 40.0 m 3 20.0 m 3 12.0 m. The density of air is 1.20 kg/m3. What are (a) the volume of the room in cubic
Burka [1]

We use the formula,

m = V\rho

Here, m is the mass, V is the volume and  \rho density

Also

V = l w h

Here l is length, w is width and h is height.

(a) The volume of the room,

V=40.0 \ m \times 3 20.0 \ m \times 3 12.0\ m = 3.99 \times 10^{6} m^3

The volume of the room in cubic feet,

V = 3.99 \times 10^{6} m^3 \times(\frac{3.281 \ ft}{m} )^3 = 4.3 \times 10^7 \ ft^3

(b) Now the mass of the air in room,

m= (3.99 \times 10^{6} \ m^3) (1.20 \ kg/m^3) = 4.8 \times 10^6 kg.

Therefore, the weight of the air in room,

W = mg= 4.8 \times 10^6 kg \times 9.8 m/s^2 = 46.9 \times 10^6 \ N \\\\ W = 4.69 \times 10^7 \ N.

The weight of air in the room in pounds,

W = 4.69 \times 10^7 \ N ( \frac{1 \ lb}{4.448 \ N} ) = 1.1 \times 10^7 \ lb


3 0
3 years ago
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