It had to start off negative. Odd powers of negative numbers remain negative, even powers will always be positive no matter what. Every time you add one to the power, you multiply by another negative, changing the sign.
12-9y because i looked it up lolz
Answer:
3
Step-by-step explanation: divid e 3000 by 1000
( you can ignor e zeros in this case so 3 divide by 1
Answer:
0.89 J/g/°C
Step-by-step explanation:
The Heat gained by an object is given in terms of specific heat capacity as:
H = mc(T2 - T1)
where m = mass of the object
c = specific heat capacity
T2 = final temperature
T1 = initial temperature
50 g of an unknown metal takes 1112.5 J of energy to change its temperature from 20°C to 45°C.
This implies that:
1112.5 = 50 * c * (45 - 20)
1112.5 = 50 * c * 25
1112.5 = 1250 * c
=> c = 1112.5 / 1250
c = 0.89 J/g/°C
The specific heat capacity of the metal is 0.89 J/g/°C
