Answer:
A
Explanation:
All of the other answers don't make much sense
The answer is Density !, Do you also need an example ?
Rate this the brainliest answer , Thank youuu !
Answer:
9ms^2
Explanation:
since ,Force=mass*acceleration
then, acceleration=force/mass
and, Force=90N
Mass=10pound
therefore, acceleration=90/10
=9ms^2
Answer:
![T = 40.501\,^{\textdegree}C](https://tex.z-dn.net/?f=T%20%3D%2040.501%5C%2C%5E%7B%5Ctextdegree%7DC)
Explanation:
The interaction of the piece of copper and water means that the first one need to transfer heat in order to reach a thermal equilibrium with water. Then:
![-Q_{out,Cu} = Q_{in,H_{2}O}](https://tex.z-dn.net/?f=-Q_%7Bout%2CCu%7D%20%3D%20Q_%7Bin%2CH_%7B2%7DO%7D)
After a quick substitution, the expanded expression is:
![-(43.9\,g)\cdot (0.385\,\frac{J}{g\cdot ^{\textdegree}C} )\cdot (T-135^{\textdegree}C) = (254\,g)\cdot (4.187\,\frac{J}{g\cdot ^{\textdegree}C} )\cdot (T-39\,^{\textdegree}C)](https://tex.z-dn.net/?f=-%2843.9%5C%2Cg%29%5Ccdot%20%280.385%5C%2C%5Cfrac%7BJ%7D%7Bg%5Ccdot%20%5E%7B%5Ctextdegree%7DC%7D%20%29%5Ccdot%20%28T-135%5E%7B%5Ctextdegree%7DC%29%20%3D%20%28254%5C%2Cg%29%5Ccdot%20%284.187%5C%2C%5Cfrac%7BJ%7D%7Bg%5Ccdot%20%5E%7B%5Ctextdegree%7DC%7D%20%29%5Ccdot%20%28T-39%5C%2C%5E%7B%5Ctextdegree%7DC%29)
![-16.902\,\frac{J}{^{\textdegree}C}\cdot (T-135^{\textdegree}C) = 1063.498\,\frac{J}{^{\textdegree}C} \cdot (T-39^{\textdegree}C)](https://tex.z-dn.net/?f=-16.902%5C%2C%5Cfrac%7BJ%7D%7B%5E%7B%5Ctextdegree%7DC%7D%5Ccdot%20%28T-135%5E%7B%5Ctextdegree%7DC%29%20%3D%201063.498%5C%2C%5Cfrac%7BJ%7D%7B%5E%7B%5Ctextdegree%7DC%7D%20%5Ccdot%20%20%28T-39%5E%7B%5Ctextdegree%7DC%29)
![43758,192\,J = 1080.4\,\frac{J}{^{\textdegree}C}\cdot T](https://tex.z-dn.net/?f=43758%2C192%5C%2CJ%20%3D%201080.4%5C%2C%5Cfrac%7BJ%7D%7B%5E%7B%5Ctextdegree%7DC%7D%5Ccdot%20T)
The final temperature of the system is:
![T = 40.501\,^{\textdegree}C](https://tex.z-dn.net/?f=T%20%3D%2040.501%5C%2C%5E%7B%5Ctextdegree%7DC)