Physics, 01.09.2019 21:30 gorbyalexis
Dolphins communicate using compression waves (longitudinal waves). some of the sounds dolphins make are outside the range of human hearing. upon spotting a hungry shark, dolphin a sends a message to dolphin b. to send this message as effectively as possible, dolphin a would question 1 options: send the message above the water when it jumps because air is more dense than water, and the sound would be louder above the water. make a higher pitched signal because a higher pitch is a louder sound. send the message underwater because a more dense medium would make the sound travel faster. make a softer sound because the shark will not hear the softer signal.
Answers: 2
Physics, 22.06.2019 18:30, zoelynn9104
Examples of states of consciousness include a. daydreaming b. dreaming during sleep c. hypnosis d. all of the above
Answers: 2
Physics, 23.06.2019 00:30, cici65360
Asmall electric heater, immersed in 80g of water in a calorimeter of 40j/k raises the temperature from 10.5 degree celsius to 25 degree celsius in 12 minutes. using the same apparatus with 50g of oil instead of water, it is found that the temperature of oil rises from 7 degree celsius to 27 degree celsius in 10 minutes. find specific heat capacity of the oil.
Answers: 2
Dolphins communicate using compression waves (longitudinal waves). some of the sounds dolphins make...
Mathematics, 27.05.2021 18:40
Mathematics, 27.05.2021 18:40
History, 27.05.2021 18:40
Mathematics, 27.05.2021 18:40
Arts, 27.05.2021 18:40
English, 27.05.2021 18:40