Answer:
Electromagnetic waves consist of both electric and magnetic field waves. These waves oscillate in perpendicular planes with respect to each other, and are in phase. The creation of all electromagnetic waves begins with an oscillating charged particle, which creates oscillating electric and magnetic fields.
Explanation:
Answer:
When a body is placed on a table top, it exerts a force equal to its weight downwards on the table top but does not move or fall. (i) Name the force exerted ...
The positive charge is strongest in the middle, because that is were the charges are going off from.
Answer:43.33 cm mark
Explanation:
Given
mass 1 is located at the 10 cm mark with weight of 15 kg
mass 2 is located at 60 cm mark with weight of 30 kg
string should be attached between them to balance the system
so the distance between the the two masses is 50 cm
For system to be balance torque of both the weight must nullify each other
Let us suppose string is at a distance of x cm from 15 kg mass so 30 kg mass is at a distance of 50-x cm
Balancing torque
![15\times x-30\times (50-x)](https://tex.z-dn.net/?f=15%5Ctimes%20x-30%5Ctimes%20%2850-x%29)
![x=\frac{100}{3}=33.33](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B100%7D%7B3%7D%3D33.33)
so string should be at a mark of 10+33.33=43.33 cm