It defines that if two thermodynamic systems are each in equilibrium with a third system, then they are in equilibrium with each other.
Answer: 25Hz
Explanation:
Given that:
Wavelength (λ) = 0.4m (the distance between the peaks of a wave is known as wavelength)
Frequency F = ?
Speed of wave V = 10 m/s
The wave frequency is the number of cycles which the wave complete in one second. It is measured in hertz, and represented by the symbol F
So, apply the formula V = F λ
10m/s = F x 0.4m
F = 10m/s / 0.4m
F = 25Hz
Thus, the frequency of the wave is 25 Hertz.
Answer:
While conduction is the transfer of heat energy by direct contact, convection is the movement of heat by actual motion of matter
Explanation:
Chemical bonds are broken or formed when a chemical reaction occurs.
hope this helps
Answer:
(i) The velocity in the pipe is 0.71 m/s
(ii) A pipe diameter of 0.0029 m (0.29 cm) should be used
Explanation:
(i) Velocity (V) = Reynolds number × viscosity/density × diameter of pipe
Reynolds number = 1300
Viscosity = 0.21 Pa.s
Density = 855 kg/m^3
Diameter of pipe = 45 cm = 45/100 = 0.45 m
V = 1300×0.21/855×0.45 = 0.71m/s
(ii) Pipe diameter (D) = Reynolds number × viscosity/density×velocity
Reynolds number = 1300
Viscosity = 0.0015 Pa.s
Density = 955 kg/m^3
Velocity = 0.71 m/s
D = 1300×0.0015/955×0.71 = 0.0029 m (0.0029×100 = 0.29 cm)
