Write down the equation which links speed, distance and time
speed = distance/time
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All answers ▸a )John heats up 2kg of water from 20 degrees c to 80 degrees c. How much energy input did this require? b )When John weighs the water at the end, he has less than he started with. Why might this be? c) What hazards are in this experiment?
Explain, in terms of pressure, how straws draw water into your mouth.
How is a PET scanner able to locate a tumour in the patient's body?
Sophia (mass 47Kg) is travelling to the right with a velocity of 7.2m/s and Neesha (mass 68Kg) is travelling to the left with a velocity 4.8m/s. When they meet, they hold hands and travel off together. Give their final velocity and direction