The boiling point of water at lake Tahoe is <u>95.6°C</u>.
The variation of boiling point of water with pressure is determined by using the Clausius- Clapeyron equation.
Here,
P₁ is the pressure at temperature T₁, P₂is the pressure at temperature T₂;ΔHvap is the enthalpy of vaporization of water,and R is the universal gas constant.
rewrite the expression for T₂.
The boiling point of water at atmospheric pressure of 760 torr is 373 K.
Substitute 760 torr for P₁, 649 torr for P₂, 373 K for T₁, 8.314 J/K mol for <em>R </em> and 40660 J/mol for Δ H_vap and simplify.
Express the temperature in Celcius.
Answer:
Explanation:
Torque is given as = r × F
Then,
τ = rF sin θ
Force(F)=60N
r=0.12m
Then,
τ = rF sin θ
If it is applied at the end of the wrench it is applied at 90°
Then,
τ = rF sin θ
τ = 0.12×60×sin90
τ = 7.2Nm
The best answer among the following choices would be the first option A) Coal.
Answer:
d=1.25 m
Explanation:
fd=.5mv2-.5mv1; 10(d)=.5(50)(.5)-0; 10(d)=12.5; d=12.5/10; d=1.25 m
Answer:
Explanation:
angle of incidence i = 45°
angle of refraction r = 36°
refractive index
n = sini/ sinr
n = sin45 / sin36
n = .707 / .5877
= 1.2
refractive index of liquid = 1.2
If critical angle be C
SinC = 1 / n = 1 / 1.2
= .8333
C = 56.5°
Citical angle = 56.5°