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xenn [34]
2 years ago
12

Help me with number 8 please :(

Physics
1 answer:
stiks02 [169]2 years ago
5 0
Is there an answer key? with all words on it,
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A certain metal wire has a cross sectional area of 1 mm2 and is 1 m long. when it is hung from the ceiling and a 10 kg mass is h
kvasek [131]
From the Hooke's law , the extension force of an elastic material is directly proportional to the extension. 
That is, F = k e, where F is the force , k is the constant and e is the extension
 F = 10 × 10 = 100 N
e = 1mm or 0.001 m
Hence, k = F/e
                = 100 N/ 0.001
                = 100000 N/m or 100 N/mm
5 0
3 years ago
Calculate the wavelength of violet light with a frequency of 750×10 to the 12
MaRussiya [10]
Wavelength of any wave = (speed) / (frequency)

Speed of light = 300,000,000 m/sec

Wavelength = 3 x 10 to the 8 / 750 x 10 to the 12 = 4 x 10 to the -7 or 400 nanometers.
3 0
3 years ago
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B c<br>_ - _<br>a b<br>( a=3 b=-5 c=6)​
Pachacha [2.7K]
(-5)/3 - 6/(-5)
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7 0
3 years ago
How far will an object move in 6 seconds if its average speed during that time is 45 m/s
babunello [35]

Answer:

270 Meters

Explanation:

45×6=270

3 0
3 years ago
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Light is an electromagnetic wave and travels at the speed of 3.00 x 10^8 m/s
Over [174]
I think the answer is 2 hope it helps
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