Which two events are independent?
А
B
с
Total
Х
15
5
30
50
Y
5
8
15
28
Z
10
7
5
22
Total
30
20
50
100
O A and X
O A and Y
O Band X
OB and Y
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Ответ:
The heat absorbed is calculated with the help of the formula,
Q = mCΔT
Q is heat absorbed, m is mass given as 56 gms, C is the specific heat of iron, that is, 0.449 J/g°C, and delta T is the change in temperature, which is 28 - 7 = 21°C
Thus, Q = 56 × 0.449 × 21 = 528 J