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The equation β = (10 dB) log (I/I0), which defines the decibel, is sometimes written in terms of power P (in watts) rather than intensity I (in watts/m2). The form β = (10 dB) log (P/P0) can be used to compare two power levels in terms of decibels. Suppose that stereo amplifier A is rated at P =...

Can anybody help me with these Each one is either true or false 1. Work is done when the form of energy changes. 2. Energy conservation law for a projectile (no friction): Potential energy decrease equals the kinetic energy increase. 3. Without friction or work by an external force, the sum of...