You drop a ball from a height of 2.0 m, and it bounces back to a height of 1.5 m. a) what fraction of its initial energy is lost? b) what is the ball's speed after the bounce? c) where did the energy go?

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation , where i is the intensity of a given sound and is the threshold of hearing intensity. what is the intensity, in decibels, [i(db)], when ? use a calculator. round to the nearest whole number. 8 9 19 80

In the circuit shown below, with each bulb holding a resistance of 60 ohms, how many amps of current are flowing? express your number as a decimal.

Which transition by an electron will release the greatest amount of energy? oa ob oc od