A is the only logical answer
Answer:
a) three times greater
Explanation:
Remember the heat capacity is the necessary heat to increase the temperature 1 ºC to an specific mass of the substance, in this case since the water and the metal have the same mass, is easier to compare just the neccesary heat.
Since water increases 20 ºC and the metal 60 ºC, it was neccesary 3 times of the quantity of heat to the same amount of mass of the two different susbtances.
Hope it was useful
It depends on mass and distance.
Answer:
224236.76 W
Explanation:
Power: This can be defined as the rate of change of energy. The S.I unit of power is Watt(W).
From the question,
P = E/t ......................... Equation 1
Where P = power, E = Energy or work, t = time.
But,
E = Wt×d.................. Equation 2
Where Wt = Total weight of the passengers, d = distance.
Substitute equation 2 into equation 1
P = (Wt×d)/t.............. Equation 3
Given: Wt = 590×150 =88500 N, d = 244 m, t = 96.3 s.
Substitute into equation 3
P = (88500×244)/96.3
P = 224236.76 W
