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Ksju [112]
3 years ago
11

Rank the vector combinations on the basis of their magnitude.

Physics
1 answer:
melomori [17]3 years ago
6 0

I think this is about the 5th or 6th time I've seen this question
submitted to Brainly.  So far, nobody has yet given us any of
the rest of the question ... the part that tells us something about
the vectors, so that we have some way to know their magnitudes.
So far, nada.

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Estimate the total number of bacteria and other prokaryotes in the biosphere of the earth. (assume the bacteria are found to a d
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Since the Earth is almost spherical in shape, we are actually to find first the volume of the spherical segment at a depth of 1,000 m. The radius of the Earth is 6,371,000 meters. The volume of a spherical segment is:

V = 1/3*πh²(3r - h)
Substituting the values and making sure the units is in mm,
V = 1/3*π(1000 m * 1000 mm/1 m)²[3(6,371,000 m * 1000 mm/1 m) - (1000 m * 1000 mm/1 m)]
V = 2×10²² mm³

Thus, the total amount of bacteria is:

2×10²² mm³ * 100 bacteria/1 mm³ = 2×10²⁴ bacteria
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4 years ago
Some scientists look at the boundary between two biological communities and see a sharp dividing line. Others looking at the sam
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Cassie pulled the boat onto the ice and adjusted its sails. Once she got started she would be able to steer, change direction an
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Wind Energy is the kind of energy will Cassie uses to power the boat.

What is wind energy?

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8 0
2 years ago
Place these waves in order from shortest wavelength to longest.
dsp73

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Ocean waves, sound waves, and light waves.

Explanation:

5 0
3 years ago
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Americium-241 is used in smoke detectors. It undergoes alpha decay with a half life of 432 years. The alpha particles ionize som
babymother [125]

Answer:

860.6 years.

Explanation:

The parameters given are;

Initial detector activity = 370000 alpha decays per second

Final detector activity = 93000 alpha decays per second

Formula for time to change in activity is given by the following relation;

t_{93000} = \dfrac{-ln\dfrac{A}{A_0} }{\lambda} =  \dfrac{-ln\dfrac{93000}{370000} }{5.08 \times 10^{-11}} = 2.72 \times 10^{10} \, seconds

t₉₃₀₀₀ = 2.72 × 10¹⁰ seconds = 860.6 years.

3 0
3 years ago
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