The ship above is using sonar to locate an object on the seafloor by sending sound waves down from the ship. The waves travel through the water and reflect off the object back to the ship. The speed of sound in the ocean is 1,500. meters/ second. How far below the surface is the object if the signal arrives back at the ship 2.72 seconds after it is sent? Round your answer to three significant figures. A 1,110 meters

B 551 meters

C 2, 040 meters

D 4,080 meters

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

It is really hard for me right know

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)