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bekas [8.4K]
3 years ago
10

Human impact on the environment

Physics
1 answer:
Sergeeva-Olga [200]3 years ago
8 0

Answer:

we have caused global warming, we have caused the enhanced green house effect

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A 1.7 kg book is lying on a 0.77 m -high table. You pick it up and place it on a bookshelf 2.0 m above the floor. how much work
luda_lava [24]
You are given the mass of the book with an initial height of 0.77m. You are also given the final height of the book, 2m above the floor. The problem requires you to find the work done on the book. It is said that work is equal to force times distance. And that force is equal to mass times acceleration due to gravity.
W=Fd
W=mgd=mgh
W=(1.7kg)(9.8m/s^2)(2m-0.77m)
W=20.49J
<span>The work is equal to 20.49J.</span>
4 0
3 years ago
What type of organism is most likely to be oxidase positive?
Sveta_85 [38]

Answer:

C

Explanation:

Gram negative is most likely to be oxidase positive.

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3 years ago
Equation need answers not quite sure
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6 molecules of carbon dioxide
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made up of more than one cell.

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Two long, straight parallel wires are placed 38 cm apart, one above the other. The top and bottom wires are carrying currents 4.
ElenaW [278]

Answer:

The force per unit length (N/m) on the top wire is 16.842 N/m

Explanation:

Given;

distance between the two parallel wire, d = 38 cm = 0.38 m

current in the first wire, I₁ = 4.0 kA

current in the second wire, I₂ = 8.0 kA

Force per unit length, between two parallel wires is given as;

\frac{F}{L} = \frac{\mu_oI_1I_2 }{2\pi d }

where;

μ₀ is constant = 4π x 10⁻⁷ T.m/A

Substitute the given values in the above equation and calculate the force per unit length

\frac{F}{L} = \frac{\mu_oI_1I_2 }{2\pi d } = \frac{4\pi *10^{-7}*4000*8000 }{2\pi *0.38} = 16.842 \ N/m

Therefore, the force per unit length (N/m) on the top wire is 16.842 N/m

4 0
3 years ago
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