Answer
According to newton law of cooling

and

now At Ta = 100
T₀ = 10 °C
T₁ = 12° C

10 = C + 100
C = -90
now,



at time equal to t
T(t) = 70



t = 48.88 s
hence, after 48.88 s the temperature of the body will be 70°C
b) time taken to reach 98°C



t = 390 s
hence, after 390 s the temperature of the body will be 98°C
Answer:
Step-by-step explanation:
Answer: The answer would be 0.6
Step-by-step explanation:
The equivalent form of 3/5 is 0.6, decimal form. The reason for this is because five goes into three only 0.6 times, so you divide the denominator by the numerator to get the equivalent, or decimal, form.