What will happen if the two plungers are pressed together firmly? Explain your answer.
1 answer:
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Complete Question
The complete question is shown on the first uploaded image
Answer:
A
B
C
The correct option is B
Explanation:
From the question we are told that
The refractive index of water is
The refractive index of ethanol is
Generally the threshold velocity for creating Cherenkov light from a charged particle as it travels through water is mathematically evaluated as
Where c is the speed of light with value
Generally the threshold velocity for creating Cherenkov light from a charged particle as it travels through water is mathematically evaluated as
=>
=>
Answer:
<em>1.01 W/m</em>
Explanation:
diameter of the pipe d = 30 mm = 0.03 m
radius of the pipe r = d/2 = 0.015 m
external air temperature Ta = 20 °C
temperature of pipe wall Tw = 150 °C
convection coefficient at outer tube surface h = 11 W/m^2-K
From the above,<em> we assumed that the pipe wall and the oil are in thermal equilibrium</em>.
area of the pipe per unit length A = =
m^2/m
convectional heat loss Q = Ah(Tw - Ta)
Q = 7.069 x 10^-4 x 11 x (150 - 20)
Q = 7.069 x 10^-4 x 11 x 130 = <em>1.01 W/m</em>