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Zielflug [23.3K]
3 years ago
12

Write the following Quantitiesin scientific notation.

Physics
1 answer:
stealth61 [152]3 years ago
3 0

Answer: a. 1.01\times 10^{4}Pa

b.  9.8\times 10^{2}ms^{-2}

c.  1.256\times 10^{-6}A

Explanation:

Scientific notation is defined as the representation of expressing the numbers that are too big or too small and are represented in the decimal form with one digit before the decimal point times 10 raise to the power.

For example : 5000 is written as 5.0\times 10^3

a. 10130 Pa to 2 decimal place is written as 1.01\times 10^{4}Pa

b. 978.15ms^{-2} to 1 decimal place is written as 9.8\times 10^{2}ms^{-2}

c.  0.000001256A to 3 decimal places is written as 1.256\times 10^{-6}A

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the ocean floor is, on average, 4267 m below sea level. What is the pressure in the atmosphere at this depth?
hichkok12 [17]
The pressure at the depth h in the ocean is given by (Stevin's law)
p= p_0 + \rho g h
where
p_0 = 1.0 \cdot 10^5 Pa is the atmospheric pressure
and \rho g h is the pressure exerted by the column of water of height h=4267 m, with \rho = 1000 kg/m^3 being the water density and g=9.81 m/s^2.
Substituting, we find
p=1.0 \cdot 10^5 Pa + (1000 kg/m^3)(9.81 m/s^2)(4267 m)=4.20 \cdot 10^7 Pa
We want to convert this into atmospheres: we know that 1 atm corresponds to the atmospheric pressure at sea level, so 1 atm=1.0\cdot 10^5 Pa, therefore we just need to divide by this number:
p= \frac{4.20 \cdot 10^7 Pa}{1.0 \cdot 10^5 Pa/atm} =420 atm
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En un balde de 25 cm de altura se hace un orificio a 15 cm del suelo.calcula la velocidad de salida del agua​
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