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Makovka662 [10]
3 years ago
14

In developed nations, the water delivered to homes by pipe is generally potable. Please select the best answer from the choices

provided T F
Physics
2 answers:
andrey2020 [161]3 years ago
8 0

Answer: The given statement is true.

Explanation:

In developed nations, water delivered to homes is purified and passes through different stages to purification so that people will get clean and safe water.

This also prevents any type of diseases cause by drinking dirty or non-purified water. For example, cholera, typhoid, dysentery etc are caused by drinking dirty water.

Thus, we can conclude that the statement in developed nations, the water delivered to homes by pipe is generally potable, is true.

stiv31 [10]3 years ago
6 0

True is ur answer sorry if i am too late

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Which statement describes a surface wave?
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Suppose that a comet has a very eccentric orbit that brings it quite close to the Sun at closest approach (perihelion) and beyon
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Answer:

16.63min

Explanation:

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To find the period you can use one of the Kepler's law:

T^2=\frac{4\pi}{GM}r^3

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M: mass of the sun = 1.99*10^30 kg

By replacing you obtain:

T=\sqrt{\frac{4\pi}{GM}r^3}=\sqrt{\frac{4\pi^2}{(6.67*10^{-11}Nm^2/kg^2)(1.99*10^{30}kg)}(1.496*10^8m)^3}\\\\T=997.9s\approx16.63min

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8 0
3 years ago
A particle is moving with (SHM) of period 8.0s and amplitude5.0m
nadezda [96]

Answer:

velocity(x)=15\,\frac{\pi}{4}\,cos(\frac{\pi}{4}x)

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Explanation:

Given the description of period and amplitude, the SHM could be described by:

f(x)=5\,sin(\frac{\pi}{4}x)

and its angular velocity can be calculated doing the derivative:

f(x)=5\, \,sin(\frac{\pi}{4}x)\\f'(x)=5\,\frac{\pi}{4}\,cos(\frac{\pi}{4}x)

And therefore, the tangential velocity is calculated by multiplying this expression times the radius of the movement (3 m):

velocity(x)=15\,\frac{\pi}{4}\,cos(\frac{\pi}{4}x)  and is given in m/s.

Then the maximum speed is obtained when the cosine function becomes "1", and that gives:

Max speed = \frac{15\, \pi}{4} \,\, \frac{m}{s}

The acceleration is found from the derivative of the velocity expression, and therefore given by:

acceleraton(x)=-15\,\frac{\pi^2}{16}\,sin(\frac{\pi}{4}x)

and the maximum of the function will be obtained when the sine expression becomes "-1", which will render:

Max acceleration = \frac{15\,\pi^2}{16} \,\,\frac{m}{s^2}

6 0
3 years ago
All of the following are true statements regarding line-voltage thermostats and control wiring except a. An electrician's licens
n200080 [17]

Answer:

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