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vampirchik [111]
3 years ago
15

Divide 0.0081 by 300 seconds and express the answer in scientific notation.

Physics
1 answer:
Colt1911 [192]3 years ago
3 0

Answer:

4×10⁴ seconds

Explanation:

Assuming you have a calculator on hand, inputting 300 ÷ .0081 give should give you 37037.0370...

In scientific notation, that number would be 3.70370370...×10⁴ and when taking into account the rounding rules for significant figures, the answer is 4×10⁴ seconds.

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4 years ago
Two sources of light of wavelength 710 nm are 9 m away from a pinhole of diameter 1 mm. How far apart must the sources be for th
Zepler [3.9K]

Answer:

7.8 mm

Explanation:

Wavelength = λ = 710 nm = 710×10⁻⁹ m

Distance between light sources =  L = 9 m

Diameter of pinhole = d = 1 mm = 1×10⁻³ m

Rayleigh Criterion

D=1.22\frac{L\lambda}{d}\\\Rightarrow D=1.22\frac{9\times 710\times 10^{-9}}{1\times 10^{-3}}\\\Rightarrow D=0.0077\ m=7.8\ mm

Distance between difraction pattern is 7.8 mm.

4 0
4 years ago
A rope has a mass of 10.43 pounds per meter. Express this in milligrams per centimeter.
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Answer:

47347.1936 milligrams per centimeter

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3 0
4 years ago
10 points
SOVA2 [1]

Explanation:

u=0 m/s

v=9.6 m/s

s= 40.5 m

a=?

V^2=u^2 +2as

9.6^2=0+2×a×40.5

92.16=81a

a=92.16/81

a=1.14m/s^2

3 0
3 years ago
How did researchers go about investigating trans-sonic flight
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<span>A wind tunnel is a traditional tool used for trans-sonic flight research. But, during those days, it’s not exact and consistent to use for aircraft flow conditions. The reason is that wind tunnel models will be visible to airflow that produces shock waves. So the U.S and Britain develop an instrument to get data and record flow conditions for a specified speed, these are the specialized research airplanes.</span>

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3 years ago
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