A long tube, fitted with a tap, is filled with water. A tuning fork is sounded above the top of the tube as the water is allowed to run out of the tube, as shown in figure 4 below tuning fork 512Hz 32.4 cm Figure 4 Figure 5 A loud sound is first heard when the water level is as shown in figure 4, and then again when the water level is as shown in figure 5 Figure 4 illustrates the standing wave produced in the tube. a) On figure 5, i. sketch the form of the standing wave produced in the tube, i. mark, with the letter N, the positions of any nodes of the standing wave b) The frequency of the tuning fork is 512 Hz and the difference in the height of the water level for the two positions where a loud sound is heard is 32.4 cm Calculate the speed of sound in the tube 13)

Abird flies at a speed of 75 metres per second for 15 seconds, how far does the bird fly

Major river of southeast asia flowing through laos thailand vietnam and cambodia

Several climate feedback loops to increase temperatures from the last glacial 20,000 years ago to interglacial conditions today. which of the below is a negative feedback loop rather than a positive feedback loop? a. warming temperatures and more rainfall globally at the end of the last glacial period caused increased growth of vegetation which would act to decrease atmospheric carbon dioxide levels. b. warming of the oceans at the end of the last glacial period releases carbon dioxide to the atmosphere (because less carbon dioxide can dissolve in warmer water). c. warming temperatures at the end of the last glacial period resulted in thawing of permafrost over large areas which released carbon dioxide to the atmosphere. d. warming temperatures at the end of the last glacial period caused a reduction in ice covered areas (sea ice, ice sheets and snow) which decreased the earth's albedo.