A large passenger ship weighs 75,000 tonnes and has a cruising speed of 45 km/h. The engines burn diesel fuel (approximately the same energy content as crude oil) with an efficiency of 20%. The drive system has an average efficiency of 55% for converting mechanical energy into propulsion for the ship. Calculate the volume of fuel, in litres, needed to accelerate the ship from rest to cruising speed.

The density of a substance is 4.0 g/cm3. if a sample of the substance has a volume of 25 cm3 then what is the mass

Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?