Answer:
So heat required to raise the temperature of water is given as Q = 33472 J
Explanation:
As we know that the temperature of water is increased by 2 Degree C
So here we have heat gain by the water is given by the equation
Now we know that
m = 1000 g
s = 4.184 J/g C
Now plug in all data in above equation
Answer:
Power P=246.78 KW
Explanation:
Mass of Elevator=4710 Kg
Can carry load =1910 Kg
Total Mass m to be lifted =4710 kg + 1910 Kg =6620 kg
speed = 3.80 m/s ⇒ per second distance traveled (height h) = 3.80 m and time t = 1 s
Using formula of Power P =
P =
P= 6620kg × 9.81 m/s² × 3.80 m / 1s
P= 246780.36 W
P=246.78 KW
There should be a reinstatement of the National Maximum Speed Limit for the safety of road users because the minimum braking distance is 2,25m.
<h3>Calculations and Parameters</h3>Hence, we can see that the minimum braking distance for the car would be:
d'/d= (v'1/v1)^2 = (1.5/1)^2
= 2.25m
The speed limit ensures that drivers do not exceed a set speed limit in order to reduce road accidents and keep road users safe and also the pedestrians would be able to navigate easier.
Read more about speed limits here:
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To solve this problem it is necessary to apply the Stefan-Boltzmann equations. This equation describes the power radiated from a black body in terms of its temperature. Mathematically this can be expressed as,
Where,
e= Emissivity
= Stefan Boltzmann constant
A = Surface Area
= Temperature at each state
Replacing our values we have,
Therefore the neat heat flow rate from the radiator is 431.3W