book Maths Puzzle Numerical Ability

A certain noise produces 3.49x10^-5 watts/mt of power. What is the decibel?

Read Solution (Total 0)

book Other Question

I need to multiply this, cant seem to work it out. Please help me

(5√[2] + 3)(√[2] - 2√[3]) A top spins 200 revolutions/minute. Find the angular velocity in radians/second.