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2 years ago

I have two of these so if you think this is easy then another free ten points in my profile!

Physics

2 answers:

Agata [3.3K]2 years ago

7 0

Answer:

Explanation:

x repersents a new moon and the others repersent quarter moons

(x is a new moon because new moons are often the phase when the moon is close to earths sun)

Katen [24]2 years ago

6 0

Z because it at a full moon the sun and moon are at opposite sides of the earth when there is a full moon

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A circuit can only light up a lightbulb if there is a ______ path for electricity to travel from one end of the energy source to

Dmitry_Shevchenko [17]

Answer:

Continuous

Explanation:

A circuit can only light up a lightbulb if there is a continuous path for electricity to travel from one end of the energy source to the other end.

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2 years ago

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You push on a box with 100 N of force, causing it to accelerate at 5 m/s?.

Xelga [282]

<h3><u>Given</u><u>:</u><u>-</u></h3>

Force,F = 100 N

Acceleration,a = 5 m/s²

<h3><u>To</u><u> </u><u>be</u><u> </u><u>calculated:-</u><u> </u></h3>

Calculate the mass of the box .

<h3><u>Formula</u><u> </u><u>used:-</u><u> </u></h3>

$\bf \: Force = Mass \times Acceleration$

<h3><u>Solution:-</u><u> </u></h3>

$\sf \: Force = Mass × Acceleration$

★ Substituting the values in the above formula,we get:

$\sf \implies \: 100 = Mass \times 5$

$\sf \implies \: Mass = \cancel\dfrac{100}{5}$

$\sf \implies \: Mass = 20 \: kg$

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2 years ago

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What is your pancreas and what does it do

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Your pancreas is an organ that is apart of the digestive system. It produces insulin and other enzymes that helps break down the food you eat.

It is found across the back of the abdomen, that is behind the stomach.

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3 years ago

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Which formula describes newton’s second law of motion?

Ksenya-84 [330]

F=ma
Force= mass × acceleration

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2 years ago

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If the energy of 1.00 mole of photons is 441 kj, what is the wavelength of the light?

Umnica [9.8K]

1 mol of photons contained a number of photons equal to Avogadro number:
$N=N_A = 6.022 \cdot 10^{23}$
The total energy of the mole of photons is $E=441 kJ=4.41 \cdot 10^5 J$ , so the energy of a single photon is the total energy divided by the number of photons:
$E_1 = \frac{E}{N} = \frac{4.41 \cdot 10^5 J}{6.022 \cdot 10^{23}} =7.32 \cdot 10^{-19}J$

The energy of a single photon is related to its frequency f:
$E_1 = hf$
where h is the Planck constant. From this formula, we find the frequency of the photons in the problem:
$f= \frac{E_1}{h}= \frac{7.32 \cdot 10^{-9} J}{6.6 \cdot 10^{-34}Js} =1.1 \cdot 10^{15} Hz$

And from the frequency we can finally calculate the wavelength $\lambda$ , using the relationship between wavelength, frequency and speed of light (c) for photons:
$\lambda= \frac{c}{f}= \frac{3 \cdot 10^8 m/s}{1.1 \cdot 10^{15} Hz} =2.73 \cdot 10^{-7} m = 273 nm$

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3 years ago