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kykrilka [37]
4 years ago
14

An inlet pipe on a swimming pool can be used to fill the pool in 1818 hours. the drain pipe can be used to empty the pool in 363

6 hours. if the pool is 2323 filled and then the inlet pipe and drain pipe are opened, how long from that time will it take to fill the pool
Physics
1 answer:
Karo-lina-s [1.5K]4 years ago
7 0
The rate of the inlet pipe is 1/18 of the pool volume per hour while the drain pipe is 1/36 volume per hour.
The net rate meaning if the two pipes work simultaneously is 1/18 – 1/36 = 1/36 of the pool volume per hour.The equation to know the t for filling 1/3 of the remaining volume of the pool is 1/36 * t = 1/3Solving for t is through cross multiplication. Thus it gives us t = 12.
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Is kirchoff's law applicable for ac circuits?
SIZIF [17.4K]
<span>Kirchhoff's laws apply to AC circuits to either two cases: instantaneousneous values of currents and voltages or to complex values of currents and voltages. However, this never applies to: rms values of currents and voltages. Kirchoff's law relates to the current, voltage and resistance to multiple nodes</span>
4 0
4 years ago
A basketball has a coefficient of restitution of 0.821 in collisions with the wood floor of a basketball court. The ball is drop
Tanya [424]

Answer: The height of its fourth bounce = 0.43m

Explanation:

The coefficient of restitution denoted by (e), is the ratio that shows the  final velocity to initial relative velocity between two objects after collision

IT is given by the formula in terms of height as

Coefficient of Restitution, e  = √(2gh))/√(2gH) = √(h/H)

Where

Coefficient of Restitution, e= 0.821

H = 2.07 m

At fourth bounce ,   we have that

Coefficient of Restitution, e⁴  =√(h₄/H)  

Putting the given values and solving , we have,

e⁴  =√(h₄/H)  

= 0.821⁴ = √(h₄/2.07)

 (0.821⁴ )² =h₄/2.07

0.2064 x 2.07 = 0.427 = 0.43

At  fourth bounce,  h₄ height = 0.43m

7 0
3 years ago
The flow of electrons from one atom to another is called
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Electron Cloud and nuclei


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4 years ago
Kalea throws a baseball directly upward at time t = 0 at an initial speed of 13.7 m/s. How high h does the ball rise above its r
Trava [24]

Answer:

h = 9.57 seconds

Explanation:

It is given that,

Initial speed of Kalea, u = 13.7 m/s

At maximum height, v = 0

Let t is the time taken by the ball to reach its maximum point. It cane be calculated as :

v=u-gt

u=gt

t=\dfrac{u}{g}

t=\dfrac{13.7}{9.8}

t = 1.39 s

Let h is the height reached by the ball above its release point. It can be calculated using second equation of motion as :

h=ut+\dfrac{1}{2}at^2

Here, a = -g

h=ut-\dfrac{1}{2}gt^2

h=13.7\times 1.39-\dfrac{1}{2}\times 9.8\times (1.39)^2

h = 9.57 meters

So, the height attained by the ball above its release point is 9.57 meters. Hence, this is the required solution.

7 0
4 years ago
Which best explains why the receiver of a signal must understand the code or language being used
Oksi-84 [34.3K]

The receiver of a signal must understand the code or language being used to avoid confusion and losses.

<h3>What is a Signal?</h3>

This is usually in the form of a sound or body movement and is involved in conveying messages to people.

The receiver must understand the code or language in order to prevent confusion or loss of lives and properties.

Read more about Signal here brainly.com/question/15304191

#SPJ1

4 0
3 years ago
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