We know, Q = m.c.Δt
Here, m = 31 g
c= 4.186 J / g C
Δt = 65
Substitute their values,
Q = 31 * 4.186 * 65
Q = 8434.79 J
In short, Your Answer would be 8434.79 Joules
Hope this helps!
A sample size of 80 will be most reliable, because there is a less likely chance for error.
Answer:
Step-by-step explanation:
Number of cows increased=60
Old quality of milk consumed=12.8litres
New Increase in milk consumed=15litres
Therefore the number of cows in the farm if the quality of milk is 1340litres=y
Therefore, 1cow =15litres
y cows= 1340litres
Crossmultiply:
15litres×ycows=1340litres
Make y the subject of formula
y= 1340÷15
y=89.33cows
Therefore,the number of cows on the farm if farmer gets 1340litres of milk would be 89cows.
Answer: 1,350 hats
Step-by-step explanation: First, it's important to understand that 50% is equivalent to the fraction 1/2.
So, the next year that hat store will sell 1/2 more hats.
First, we need to divide 900 by 2 which gives us 450.
Now, we simply add 450 to to the number of hats the store sold the first year.
450 + 900 = 1,350
This means that the hat store will sell 1,350 hats the next year.
Answer:
7 x 5 = 35 or the amount lost
Step-by-step explanation: