Answer:
The mass of the second student is 20.180 Kg
Explanation:
When the mass is added on one piston, it causes a change in pressure on other piston.
The change in mass is calculated using the formula,
Δm=ρhA/g
The calculated radius of piston is 0.46 m.
Given h=35 cm= 0.35 m.
Assume ρ=850 kg/m^3
So Δm=850*0.35*π*(0.46)^2/9.8
Δm= 20.180 Kg
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Answer:
2.866 x 10^8 J
Explanation:
Thermal conductivity, K = 0.040 W/m^2 k
Area of the wall, A = 470 m^2
Thickness, d = 17 cm = 0.17 m
difference in temperature, ΔT = 30° C
The rate of heat flow is H.
Time, t = 1 day = 1 x 24 x 60 x 60 second = 86400 second
By use of formula of heat flow


H = 2.866 x 10^8 J
Carbon: C, 12.011, 6, 12
Oxygen: O, 8, 8, 8, 16
Boron: B, 10.811, 5, 5, 11
Answer:

Explanation:
We know the mass of the hole, so we define as,
kg
For which centripetal force is equal to gravitational force

Angular velocity is equal to v/r,

As r=1 and w=1, we clear to d,
m
