A because it’s basic kinetic example
Bad, it's bring more hatred to the world
Answer:
the angle made by this ray with normal will be 45°
Explanation:
given,
refractive index of crown glass = 1.52
refractive index of the water = 1.33
ray of light in water strikes glass at 45°
angle subtended by the light when it reenter water = ?
When light enter in the glass from the water it get bend toward normal because refractive index of glass is more than water.
And when ray comes out of the glass it is parallel to the initial light ray.
hence, the angle made by this ray with normal will be 45°
The correct answer is "3. Both increase"
In fact, the frequency of a vibrating string is given by
where L is the length of hte string, T the tension and
the linear mass density.
We can see that string is made shorter, L decreases, so the frequency f increases. And since the pitch has the same behaviour of the frequency, it increases as well.
Answer:
988.39 N/C
Explanation:
First, we start by finding the magnitude of the electric dipole moment, as it's going to be needed
p = 4.40*10^-9 * 3.10*10^-3
p = 1.364*10^-11 Cm
The charges are in a uniform electric field E whose direction makes an angle of 36.4° with the line connecting the charges.
Magnitude of torque exerted on the dipole,
t = 8.0×10−9 N.m
pEsinO = t, making E subject of formula
E = t / psinO
E = 8.0*10^-9/1.364*10^-11 (sin36.4)
E = 8.0*10^-9/1.364*10^-11 * (0.5934)
E = 8.0*10^-9 / 8.094*10^-12
E = 988.39 N/C
the magnitude of this field is E = 988.39 N/C