1. A ship is sailing in dense fog and it could be close to dangerous cliffs. The captain switches on the fog horn. The horn sounds and the echo is heard 4 s later. The speed of sound in air is 340 m/s.
a. Calculate the distance between the ship and the cliff.
b. Next time the fog horn sounds it takes 3.5 s for the echo to be heard. State whether the ship is further from, nearer to or at the same distance from the cliff.
Answers: 3
SAT, 23.06.2019 18:30
Match the scsi standard to the definition that best describes it. 1. also called ultra scsi; has a transfer rate up to 30 mbps and 8-bit bus 2. transfer rate of 5 mbps and 8-bit bus 3. also called firewire; has a transfer rate up to 100 mbps and can connect up to 63 devices 4. consists of two protocols; fast scsi with speeds up to 10 mbps using an 8-bit bus and wide scsi, which uses 16- or 32-bit buses serial scsi scsi-2 scsi-3 scsi-1
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SAT, 26.06.2019 09:00
Which object has the least amount of kinetic energy? a. a car driving down a road b. a soccer ball rolling down a hill c. a bicycle locked to a bike rack d. a satellite orbiting earth
Answers: 2
1. A ship is sailing in dense fog and it could be close to dangerous cliffs. The captain switches on...
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