Describe five things that you do to make yourself feel warmer or cooler.
1 answer:
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Answer : The significant digit is 6
Explanation :
Multiply by
Now, on multiplying
Now, the significant digit is 6.
Hence, this is the required solution.
Answer:
the final temperature of the tea is 7.39⁰C.
Explanation:
Given;
mass of the tea, m = 375 g
specific heat capacity of the tea, C = 4.184 JJ/g°C
initial temperature of the tea, t₁ = 95°C
the final temperature of the tea, t₂ = ?
Energy lost by the refrigerator, Q = 137,460 J
The energy lost by the refrigerator is given by the following formula;
-Q = mc(t₂ - t₁)
-137,460 =375 x 4.184(t₂ - 95°C)
-137,460 = 1569(t₂ - 95°C)
Therefore, the final temperature of the tea is 7.39⁰C.
Answer:
Explanation:
q = Charge in the potassium ion =
e = Charge of electron =
= Change in potential =
Change in electric potential is given by
The energy is