the standard weights (Dhaka) and meter scales of the shops in the market are verified in every two years by the department of measurement of Nepal, Why?​

Hen a gfci receptacle device is installed on a 20-ampere branch circuit (12 awg copper), what is the minimum volume allowance (in cubic inches) required for conductor fill for each conductor in the outlet box?

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.