Answer: Option B.) they travel from south to north
Inside the magnet, the field lines travel from South to North.
Explanation:
A magnet has two poles: North and South. The magnetic field lines originate from North and end at south pole. Maximum field lines are at the poles. Inside the magnet, the field lines travel from South pole to North pole. Overall, the field lines form a loop.
Answer:
1.1775 x 10^-3 m^3 /s
Explanation:
viscosity, η = 0.250 Ns/m^2
radius, r = 5 mm = 5 x 10^-3 m
length, l = 25 cm = 0.25 m
Pressure, P = 300 kPa = 300000 Pa
According to the Poisuellie's formula
Volume flow per unit time is
V = 1.1775 x 10^-3 m^3 /s
Thus, the volume of oil flowing per second is 1.1775 x 10^-3 m^3 /s.
Answer:
10^6 Pa
Explanation:
Radius of the opening, r = 0.491 mm = 0.491 x 10^-3 m
Force, F = 0.763 N
Pressure is defined as the thrust acting per unit area. Its SI unit is Pascal.
Pressure = force / Area
Area, A = πr² = 3.14 x 0.491 x 10^-3 x 0.491 x 10^-3 = 7.57 x 10^-7 m^2
Pressure
P = 1 x 10^6 Pascal
Thus, the pressure inside the pot is 10^6 Pa.