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:
1. 60 kg m/s
2. 2.4 kg
3. none they both have same momentum
A gas doesn't have a fixed shape because the amount of space between the molecules in gas can change easily. B. the particles are not compressible
Answer:
a) The total force is 4659.8 N
b) The gauge pressure is 50764 Pa
Explanation:
Given:
Pressure inside = 0
Patm = pressure outside = 1.013x10⁵Pa
Pressure difference = ΔP = 1.013x10⁵ - 0 = 1.013x10⁵Pa
a) The area is equal:
The force is:
b) The gauge pressure at the bottom is equal:
Where:
ρ = density = 1000 kg/m³
h = 17 ft = 5.18 m
Replacing:
