Her savings is the 25% amount... well, if we take 65 to be the 100%, how much is 25% of that?
solve for "x", that's her savings
the cost of the jeans is 65 - x
solve for "x", that's her savings
the cost of the jeans is 65 - x
I just need to know if I did these two problems right or not because I just learned this in class today.
1 answer:
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Answer:
The required specific heat is 196.94 joule per kg per °C
Step-by-step explanation:
Given as :
The heat generated = Q = 85.87 J
Mass of substance (m)= 34.8 gram = 0.0348 kg
Change in temperature = T2 - T1 = 34.29°C - 21.76°C = 12.53°C
Let the specific heat = S
Now we know that
Heat = Mass × specific heat × change in temperature
Or, Q = msΔt
Or, 85.87 = (0.0348 kg ) × S × 12.53°C
Or , 85.87 = 0.4360 × S
Or, S =
∴ S = 196.94 joule per kg per °C
Hence the required specific heat is 196.94 joule per kg per °C Answer