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Damm [24]
3 years ago
14

If C is the vector sum of A and B, C = A + B, What must be true if C = A + B?. What must be true if C = 0?.

Physics
1 answer:
dybincka [34]3 years ago
7 0
A and B are equal vectors
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The thinnest layer of the earth is the:
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crust

Explanation:

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Endorphins are generated in the body during exercise, which leads to better emotional health true or false
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When 224-nm light falls on a metal, the current through a photoelectric circuit is brought to zero at a stopping voltage of 1.84
OLga [1]

Answer:

3.71 eV

Explanation:

λ = Wavelength of light = 224 nm = 224 x 10⁻⁹ m

c = speed of electromagnetic wave = 3 x 10⁸ m/s

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Using the equation

\frac{hc}{\lambda } = eV_{o} + W_{o}

\frac{(6.63\times 10^{-34})(3\times 10^{8})}{224\times 10^{-9} } = (1.6\times 10^{-19})(1.84) + W_{o}

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7 0
3 years ago
Which of the following most<br> directly limits the number of<br> organisms in a community?
astraxan [27]

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A physics teacher performing an outdoor demonstration suddenly falls from rest off a high cliff and simultaneously shouts help.
GrogVix [38]

Answer:

H = 532 m

Explanation:

When teacher falls into the cliff then she shout for Help at the same time

so here we know that sound will go down and reflect back up

so here in 3 s distance traveled by the sound

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d = 340 \times 3

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now in the same time the distance that teacher will fall down is given as

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d_{total} = d + d_1

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this total distance must be equal to twice the height of the cliff

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3 years ago
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