Sound source A has a deciBel rating of 80 dB. Sound source
B is 100 times more intense. What is the deciBel rating of B?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

He viscosities of several liquids are being compared. all the liquids are poured down a slope with equal path lengths. the liquid with the highest viscosity will