Answer:
v₂ = 306.12 m/s
Explanation:
We know that the volume flow rate of the water or any in-compressible liquid remains constant throughout motion. Therefore, from continuity equation, we know that:
A₁v₁ = A₂v₂
where,
A₁ = Area of entrance pipe = πd₁²/4 = π(0.016 m)²/4 = 0.0002 m²
v₁ = entrance velocity = 3 m/s
A₂ = Area of nozzle = πd₂²/4 = π(0.005 m)²/4 = 0.0000196 m²
v₂ = exit velocity = ?
Therefore,
(0.0002 m²)(3 m/s) = (0.0000196 m²)v₂
v₂ = (0.006 m³/s)/(0.0000196 m²)
<u>v₂ = 306.12 m/s</u>
Answer:
1 true, 2 true, 3 false, 4 false and 5 true
Explanation:
The magnetic field lines are used to graphically represent the magnetic field,
1 true. Because the field line is a graphic representation of the magnetic field
2 true leave one pole and reach another, there are no magnetic monopoles
3 false. The density of the lines gives an idea of the strength of the field, they are dense where the field is greater
4 false. The magnetic force is perpendicular to the field and therefore to the field lines
5 true. With the same experimental conditions, each field gives a unique force, if the lines cross different fields they would give the same force.
Answer :
Explanation:
a =vf -vi/t
a = 9.5m/s -om/s/41 s
a = 0. 23 m/s²
Number of protons = atomic number (12)
Mass Number = 0.25
mass number = number of protons + number of neutrons
Number of neutrons = mass number - number of protons
Number of neutrons = 0.25 - 12
number of neutrons = - 11.75