An 34-kg person puts on a life jacket, jumps into the water, and floats. The jacket has a volume of 2.7 10-2 m3 and is completely submerged under the water. The volume of the person's body that is under water is 6.3 10-2 m3. What is the density of the life jacket

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.