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Zina [86]
2 years ago
9

14.

Physics
1 answer:
larisa [96]2 years ago
7 0

Answer:

The answer is C, air resistance!

Explanation:

A frictional force in the air is air resistance because it is in the air.

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Current passes through a solution of sodium chloride. In 1.00 second, 2.68×1016Na+ ions arrive at the negative electrode and 3.9
miskamm [114]

Answer:

a) 10.56mA the current passing between the electrodes

b) away from the negative charge

Explanation:

The detailed step by step calculation is as shown in the atached file.

By Application of faradays first law of electrolysis. i.e Q = it

7 0
2 years ago
Which describes who will record their measurements in joules?
Aleksandr [31]

Answer: Lily, Astrid, Henry, and Bob

Explanation:

By a small online search i've found the image related to this question, and you can see it below.

Joules is a unit of energy, such that:

Joule = kg*m^2/s^2

In other hand, Watt is a unit of power, such that:

1 W = 1 J/s

Then if we measure power, we are measuring watts, which is equivalent to measuring the total amount of energy in joules in a given period of time, and then dividing that by the time. And if we measure energy, we are directly measuring joules.

Then if we measure power or energy, at some point our measures will be in joules (unless we have an specific device to measure power, but these usually exist for electronic systems, not for mechanical/dinamic systems like the ones in the image), this means that all of them will record their measurements in joules, so the correct option is Lily, Astrid, Henry, and Bob

3 0
3 years ago
Read 2 more answers
A solid yellow line on your side of the center stripe means pass with care.<br> A. True<br> B. False
oee [108]

Answer:

B

Explanation:

a straight yellow is a no pass zone

7 0
3 years ago
What is the speed of sound in solid? <br>​
sasho [114]
The speed of sound in a solid would be 6000 metres per second
7 0
2 years ago
Read 2 more answers
Find the fundamental frequency and the next three frequencies that could cause standing-wave patterns on a string that is 30.0 m
maksim [4K]

Answer:

0.786 Hz, 1.572 Hz, 2.358 Hz, 3.144 Hz

Explanation:

The fundamental frequency of a standing wave on a string is given by

f=\frac{1}{2L}\sqrt{\frac{T}{\mu}}

where

L is the length of the string

T is the tension in the string

\mu is the mass per unit length

For the string in the problem,

L = 30.0 m

\mu=9.00\cdot 10^{-3} kg/m

T = 20.0 N

Substituting into the equation, we find the fundamental frequency:

f=\frac{1}{2(30.0)}\sqrt{\frac{20.0}{(9.00\cdot 10^{-3}}}=0.786 Hz

The next frequencies (harmonics) are given by

f_n = nf

with n being an integer number and f being the fundamental frequency.

So we get:

f_2 = 2 (0.786 Hz)=1.572 Hz

f_3 = 3 (0.786 Hz)=2.358 Hz

f_4 = 4 (0.786 Hz)=3.144 Hz

6 0
3 years ago
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