The wire vibrates back and forth between the poles of the magnet.
The frequency of the vibration is the frequency of the AC supply.
Which of what? Apologies please list the following so I can help.
Answer:
b. 5.6 mA
Explanation:
As the voltmeter is connected to the resistor in parallel. The new resistance of the systems is
R = 1/0.0214 = 46.78 Ω
The voltage is
So the new current now of the system is
So about 1.2056 - 1.2 = 0.0056 A or 5.6mA is drawn away.
Answer:
1. it is laminar flow
2. it is not fully developed
3.Re=63.156
4. entrance length is the entrance diameter which is 4.1-mm-
Explanation:
A soft drink with the properties of 10 oC water is sucked through a 4.1-mm-diameter, 0.25-m-long straw at a rate of 4.1 cm3/s.
(a) Is the flow at the outlet of the straw laminar?
(b) Is it fully developed? To explain calculate
(c) the Reynolds number and
(d) the entrance length
note te following
For&pipe&flow:&
Re&<&2100 laminar&flow&
Re&>&4000 turbulent&flow&
kinematic viscosity of water at 10 oCis 1.267E-6m^2/S
Re=vl/k.viscosity
v=q/A
q=4.1 cm3/s=4.1*10^-6m3/s
A=3.142*0.0041/4
A=0.00322m2
v=0.000318m/s
l= 0.25-m
RE=0.000318m/s*0.25/( 1.267E-6m^2/S)
Re=63.156
since re<2100 , it is laminar flow
2. it is not fully developed
3.Re=63.156
4. entrance length is the entrance diameter wic is 4.1-mm-
