Answer:
the equilibrium temperature Te = 19.9°C
Explanation:
Given;
specific heat for copper Cc is 390 J/kg⋅°C
for aluminun Ca is 900 J/kg⋅°C,
for water Cw is 4186 J/kg⋅°C
Mass of copper Mc= 265 g = 0.265kg
Temperature of copper Tc = 235°C
Mass of aluminium Ma = 135g = 0.135 kg
Temperature of aluminium Ta = 14.0°C
Mass of water Mw= 865 g = 0.865kg
Temperature of water Tw = 14.0°C
The equilibrium temperature can be derived by;
Te = (MaCaTa + McCcTc + MwCwTw)/(MaCa + McCc+ MwTw)
Substituting the values;
Te = ( 0.135×900×14 + 0.265×390×235 + 0.865×4186×14)/(0.135×900 + 0.265×390 + 0.865×4186)
Te = 19.939°C
Te = 19.9°C
Answer:
32.9166667 m / s^2
Explanation:
s = 4.25km (1000m / 1km)
= 4250m
u = 20m/s
delta T = 20min (60sec / 1min)
= 1200s
Use formula s = ut + (1/2)at^2
4250m = 20m/s * 1200s + (1/2)a*1200s^2
Rearrange it to find a
a = (s-ut) / (1/2 * t^2)
a = (4250m - 20m/s*1200s) / (1/2 * 1200s^2)
a = -32.9166667 m / s^2
The nervous system and the circulatory system
Answer: velocity
Explanation: Hope this helps :)
Answer:
Total strain when the stress was equal to 210 MPa = 0.101
Explanation:
See attached pictures.
