Answer:5.21 N
Explanation:
Given
B=5.210 T
I=2 A
L=0.5 m
Given Wire is perpendicular to Magnetic field
F=5.210 N
as 1 Tesla =1 N/A/m
Media 1 and 2 are air and liquid. By Snell's law;
n1/n2 = Sin ∅2/Sin ∅1
Then,
n2 = (n1* Sin Ф1)/Sin ∅2 = (1*Sin 31.7)/Sin 21.3 = 1.4466.
When the light travels in the opposite direction and at critical angle, media 1 and 2 are liquid and air respectively while ∅2 = 90°
Therefore,
n1/n2 = Sin 90 / Sin ∅c => ∅c = Sin ^-1[n2*Sin 90]/n1 = Sin ^-1[1*Sin 90]/1.4466 = 43.73°
The critical angle (∅c) is 43.73°.
It causes the greenhouse effect
Answer:
The person inside the train would see the ball moving straight vertical upward and then vertically downwards also because for a person inside the train, there is only one velocity that could act on the ball and this velocity is downwards.
On the other hand, the person outside the train would see the ball appear to move along the parabolic path because the ball to this person would have two velocities acting on it: the vertical and horizontal components of velocity.
Explanation:
Answer: v= 330m/s
Explanation: the length (l) of an open closed pipe is related to the wavelength (λ) as shown in the formulae below
l = λ/4
where l = 0.55m, hence we have that
0.55 = λ/4
λ = 0.55*4
λ = 2.2m
from the question, it can be seen that the fundamental frequency is 150Hz.
Recall that we have v=fλ, where v = speed of wave, f= frequency, λ= wavelength
v =2.2 * 150
v = 330 m/s
