Find the area of the CD. (I used P for pi, too lazy @
[email protected])
A=Pr² - Pr²
radius of the small hole in the middle, 0.75cm
radius of the CD, 6cm
A=3.14*6²-3.14*0.75²
A=111.27375cm²
The Approximate area of the CD is 111.27cm²
Okay. So let’s convert the 1/10 to something easier to work with. 1/10 is equivalent to 10/100. 10/100 + 8/100 = 18/100. But we can simplify that fraction by dividing by 2. When we divide the numerator and denominator by 2, the simplified fraction is 9/50. The sum is 9/50.
Not sure what you’re asking but 64 inches
Answer:
True,c,b,a
Step-by-step explanation:
Hopes this helped:)
The first question asks to find a change in temperature. To find this, we subtract the first temperature from the last. The final temperature here is 35.65 C, while the initial is 24.85 C. Finding the change, we end up with
To find the m and c for 3, we know that m stands for mass (represented in grams here - make sure that you know whether to do it in kilograms or grams! If it says that the specific heat of water is 4,184 , it's kilograms. If it's 4.184, it means grams), and we know that there are 1000 grams of water. Thus, our mass is 1,000. The c, or specific heat, is 4.184 J/(g*C) for water. Therefore, we have
as the heat absorbed by the water.
Similarly for the calorimeter, we multiply the heat capacity of the calorimeter by the change in temperature, or
as the heat absorbed by the calorimeter.
Feel free to ask further questions!