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FromTheMoon [43]
3 years ago
11

HELP NOW brainlist I’ll do anything helppoo

Physics
1 answer:
Kazeer [188]3 years ago
4 0

Answer:

b

Explanation:

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How are vectors added and subtracted
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Place the next vector with its tail at the previous vector's head. ... To subtract vectors, proceed as if adding the two vectors, but flip the vector to be subtracted across the axes and then join it tail to head as if adding. Adding or subtracting any number of vectors yields a resultant vector.

Explanation:

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Name two energy transformations that occur as Adeline pedals her bicycle up a steep hill and then coasts down the other side.
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3 years ago
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how much power is needed to lift a box with a force of 780 newtons over a distance of 2 meters in 45 seconds
-BARSIC- [3]

Answer:

<h2>34.67 W</h2>

Explanation:

Power is the rate at which work is done and can be found by using the formula

p =  \frac{w}{t}  \\

p is the power in Watts (W)

w is the workdone in joules

t is time in s

but workdone = force × distance

From the question

force = 780 N

distance = 2 m

workdone = 780 × 2 = 1560 N

Since we now have the value of workdone we can find the power

We have

p =  \frac{1560}{45}  = 34.6666666... \\

We have the final answer as

<h3>34.67 W</h3>

Hope this helps you

3 0
2 years ago
Which energy source has no greenhouse gas emissions or health impacts on humans, but is only
NARA [144]

Answer:

i mean i would think solar engery example solar panels

Explanation:

man i tried for you sorry if i wasnt much help

7 0
2 years ago
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What is the wavelenght and the frequencen of walkie-talkie?
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Nowadays, most of the walkie talkies ... and all R/C models ... operate in the "Family Radio Service" (FRS) band. That's 46-49 MHz. The wavelength is 6.12-6.52 meters.
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