Solution :
Given data :
Mass of ice, m = 200 g
Mass of water, M = 500 g
Temperature of ice = 0°C
Temperature of water = 20°C
We known ;
The latent heat of fusion of water is
The specific heat of water, C = 4.18 kJ/kg K
a). Heat required to change the ice into water is :
J
Heat required to cool the warm water is :
From above result,
This means that total ice could not melt.
So, the temperature must be T = 0°C
b). Q' = mL
m = 0.1253 kg
m = 125.3 g
m = 125 g
Therefore, 125 g of ice had melted.
Answer:
941.2 (rounded from 941.17647) kilometers per hour.
Explanation:
To find the average speed of something all you have to do is divide the distance by the time, so 8,000 divided by 8.5. (You can divide the answer by 60 if you need to have the average speed per minute.)
Answer:
The maximum change in flux is
The average induced emf
Explanation:
From the question we are told that
The speed of the technician is
The distance from the scanner is
The initial magnetic field is
The final magnetic field is
The diameter of the loop is
The area of the loop is mathematically represented as
At maximum the change in magnetic field is mathematically represented as
=>
The average induced emf is mathematically represented as
We will have the following:
First, we remember that velocity is the change of position with respect to time and this can be seen as the derivative of the position; and that the acceleration is the change of velocity with respect to time and this can be seen as the derivative of the velocity or the second derivative of the position; so:
Then velocity will be:
And finally the acceleration will be:
And thus, when we examine the problem at t = 250s we will have that the acceleration will be 8 units of distance / s^2; this due to the fact that the second derivative is a constant.
Answer:
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