E=mc2 E = equivalent energy m = mass in kg c≅3×108m/s According to Einstein in Quantum fields which carry a certain amount of energy. In an empty space, the amount of energy gets larger as the fields get large. Hence energy and mass are equivalent.

# Tag: Basic Physics

## Power Factor Formula For Single Phase

PowerFactor=TruePower/ApparentPower cosϕ=R/Z PowerFactor=119.365W/169.256VA PowerFactor=0.705 Cos45.152degrees=0.705 Here, it is noted that single phase power factor is less than 1. Note: For a purely resistive circuit, the power factor is 1.

## Hubble’s Law Formula

Hubble’s Law Formula is given by v=H0r Where, H0=Hubble′sConstant km/s/Mpc v = Recessional Velocity km/s r = distance of a galaxy in Mpc