Answer:
Doppler Effect works on both light and sound objects.
Explanation:
Like when a sound object moves towards you, the frequency of the sound waves increases, leading to a higher pitch.
if it moves away from you, the frequency of the sound waves decreases and the pitch comes down.
Answer:
1) The angle of deflection will be less than 45° ( C )
2) The angle of deflection will be greater than 45° but less than 90° ( E )
Explanation:
1) Assuming that the force applied has a direction which is perpendicular to the Earth's magnetic field
∴ Fearth > Fapplied hence the angle of deflection will be < 45°
2) when the Fearth < Fapplied
the angle of deflection will be : > 45° but < 90°
Answer:
Charge on the sphere will be equal to
Explanation:
We have given radius of the sphere a = 13 cm
And electric filed 21 cm from the center is
So distance from the center r = 21 cm
We have to find the charge on the sphere
As
So according to Gauss law electric field is equal to
So
So charge on the sphere will be equal to
Answer:
C. No charges
Explanation:
The nucleus of an atom contains protons and neutrons.