Top answers

What is the number of protons in an atom also called?

The atomic number.
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Answered by Grace M. • Chemistry tutor
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List 3 halogen elements?

Chlorine, bromine and iodine.
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Answered by Grace M. • Chemistry tutor
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What is peristalsis?

Peristalsis describes the movement of food throughout the digestive system. Muscles in within the gut wall contract therefore pushing the bolous of food through the digestive system.
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Answered by Grace M. • Biology tutor
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What is diffusion?

The movement of a substance from an area of high concentration to an area of lower concentration. One of the ways a substance can move in and out of a cell across the cell membrane.
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Answered by Grace M. • Biology tutor
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How deep is the water if it takes a pulse of ultrasound 0.8s to be received back at the boat. the speed of ultrasound is 1600m/s in water

firstly we know how fast the wave is travelling and we know for how long so using our speed equals distance over time equation we can rearange for distance (D= VT). we can the plug in our speed(V) and our ti...
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Answered by Ross C. • Physics tutor
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