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Aleksandr [31]
3 years ago
15

Urbanization is the cause of "urban heat island" a condition that could be described as global warming caused by pollutants of a

city increase of temperature in a city due to heat absorption of buildings and roads warming of water that is next to a city warming of a city near mountains due to lava under the ground
Physics
1 answer:
Lena [83]3 years ago
4 0

Urbanization is the cause of "urban heat island" a condition that could be described as an increase of temperature in a city due to heat absorption of buildings and roads. The temperature alteration usually is higher at night than during the day and is most specious when winds are feeble. UHI is most obvious during the summer and winter<span>. The main reason for the urban heat island effect is from the alteration of land surfaces. </span>

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The flow rate over Niagara falls is 84,760 cfs (cubic feet per second), and the drop from top to bottom is 167 feet. If this flo
jekas [21]

To develop this problem we will calculate the volume from the given flow (volume per unit of time). This process will be accompanied by transforming the units given in the International system.

Through the density-volume-mass ratio, we will calculate the mass. Finally we will proceed to calculate the total power generated.

1 feet = 0.3048 m

\dot{V} = 84760ft^3/s

\dot{V} = 84760ft^3/s (\frac{(0.3058m)^3}{(1ft)^3})

\dot{V} = 2400m^3/s \text{and the Volume each second is } V= 2400m^3

Now the mass of water falling down each second would be

\rho = \frac{m}{V} \rightarrow m = \rho V

m = (1000kg/m^3)(2400m^3)

m = 2.4*10^6kg

Now Height in meters is

h = 167 ft (\frac{(0.3058m)}{(1ft)})

h= 50.9 m

The power produced is equivalent to the work done by gravity over a certain time. At this case that can be expressed as,

P = \frac{W}{t}\\P = \frac{F*h}{t}\\P = \frac{mgh}{t}\\P = \frac{2.4*10^6*9.8*50.9}{1}\\P = 1.197*10^9 Watts

The power of Niagara Falls then would be 1.197GW while the power generated by the Three Gorges Dam is  22,500 MW. This indicates that the Niagara Falls, if it were a dam that covered 100% of the fluid it carries, would exceed the production of the dam in China by thousands.

8 0
4 years ago
Select all that apply.
sattari [20]

Answer: The temperature and the number of molecules must remain constant for the law to apply.

Explanation:

6 0
3 years ago
A paintball is fired horizontally from a tower 45 m above the ground. If the paintball gun fires at 90 m/s… How long does it tak
ankoles [38]

Answer:

The time taken for the paint ball to hit the ground is t =  2.143 \ s

The distance of the landing point from the tower is d = 192.86 \  m

Explanation:

From the question we are told that

   The height of the tower is h =  45 \ m

    The speed of the paintball in the horizontal direction is  v_x =  90 \  m/s

Generally from kinematic equation we have that

      h =  ut + \frac{1}{2} at^2

Here u is the initial  velocity of the paintball in the vertical direction and the value is 0 m/s , this because the ball was fired horizontally

         a is equivalent to g  = 9.8\ m/s^2

        t is the time taken for the paintball to hit the ground

   So    

       45  =  0* t + \frac{1}{2} 9.8 * t^2

=>    t =  2.143 \ s

Generally the distance of its landing position from the tower is

         d = v  *  t

=>      d = 90 *  2.143

=>    d = 192.86 \  m

     

3 0
3 years ago
thr koppean climate map of arizona and three different pictures of cities in arizona describe how ari pressure, temperature and
Sonbull [250]

Answer:

the tempature and the map and climate

Explanation

3 0
4 years ago
What type of plate boundry is located at the mid ocean ridges
jekas [21]
Is an underwater mountain range
5 0
3 years ago
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