I read it’s a unit of energy
Answer:
Explanation:
These tectonic plates rest upon the convecting mantle, which causes them to move. The movements of these plates can account for noticeable geologic events such as earthquakes, volcanic eruptions, and more subtle yet sublime events, like the building of mountains.
Answer:
low sound waves like bass pass through walls better
Explanation:
Answer:
m = 30, g = 9.8, coefficient = 0.2, so force due to friction = 30 x 9.8 x 0.2 = 58.8 N, so work done by friction = 58.8 x 1.2 = 70.56 J
Explanation:
Answer: .2) The final temperature will be exactly midway between the initial temperatures of substances A and B.
Explanation:
As we know that,
![m_A\times c_A\times (T_{final}-T_A)=-[m_B\times c_B\times (T_{final}-T_2)]](https://tex.z-dn.net/?f=m_A%5Ctimes%20c_A%5Ctimes%20%28T_%7Bfinal%7D-T_A%29%3D-%5Bm_B%5Ctimes%20c_B%5Ctimes%20%28T_%7Bfinal%7D-T_2%29%5D)
.................(1)
where,
q = heat absorbed or released
= mass of A = 2x
= mass of B = x
= final temperature = z
= temperature of A
= temperature of B
= specific heat capacity of A = y
= specific heat capacity of B = 2y
Now put all the given values in equation (1), we get
![2x\times y\times (z-T_A)=-[x\times 2y\times (z-T_B)]](https://tex.z-dn.net/?f=2x%5Ctimes%20y%5Ctimes%20%28z-T_A%29%3D-%5Bx%5Ctimes%202y%5Ctimes%20%28z-T_B%29%5D)
Therefore, the final temperature of the mixture will be exactly midway between the initial temperatures of substances A and B.
