Given:
Temperature of water, = =273 +(-6) =267 K
Temperature surrounding refrigerator, = =273 + 21 =294 K
Specific heat given for water, = 4.19 KJ/kg/K
Specific heat given for ice, = 2.1 KJ/kg/K
Latent heat of fusion, = 335KJ/kg
Solution:
Coefficient of Performance (COP) for refrigerator is given by:
Max =
= = 9.89
Coefficient of Performance (COP) for heat pump is given by:
Max = = 10.89
Answer:
It means that a feature is dimensioned more than once.
For example, suppose you have a drawing of a rectangle, and the width is dimensioned twice. That's an example of over-dimensioning.
Of course, that's a rather obvious example. Sometimes it's more subtle. Suppose the rectangle has the width and height dimensioned, but also the diagonal. This is also an example of over-dimensioning. If the width and height are dimensioned, then you don't need to dimension the diagonal; that's already fixed by Pythagorean theorem.
Answer:
t ≤ 0.31s
Explanation:
Given
Frequency = 0.1Hz
Dynamic Error:
σ = 1 - M(σ)
From the question
σ= 1 - M(σ) ≤ 2%
1 - M(σ) ≤ 0.02
The above corresponds to
M(σ) = 1/(1 + (wt))² ≥ 100% - 0.02
M(σ) = 1/(1 + (wt))² ≥ 1 - 0.02
M(σ) = 1/(1 + (wt))² ≥ 0.98
Since frequency = 0.1Hz
w = 2πf =
w = 0.628571428571428
w = 0.628rads
So, M(0.628) = 1/(1 + (0.628t)²) ≥ 0.98
Solving 1/(1 + (0.628t)²) ≥ 0.98 we get that
t ≤ 0.31s
Answer:
Check the explanation
Explanation:
Kindly check the attached image below for the full step by step explanation to your question.
Answer:
The factors that affect your energy of motion are speed and weight. The energy of motion increases proportionally with the increase in weight, and the energy increases proportionally with the square of the increase in speed. Traction enables your tires to grip to the road and control your vehicle.
Explanation: