Which waves are used in sonography?
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Explain what is time?
Explain the Compound microscope ?
When we go higher up, for how much distance does the temperature roughly decrease by 1oF
Explain the Flying Machines ?
What is the longest lasting synthetic periodic element?
What is frequncy?
Explain how spectral lines show discrete energy levels in an atom. : quantum physics
A man asks his friend to meet him at the airport at 3.00pm,to drive him to an appointment.he catches an earlier plane,and arrives at the airport at 2.00pm.he decides to start walking and is picked up en route by his friend.he arrives twenty minutes early for his appointment.how long did he walk?
What is the velocity of light ?
Explain about Sanitation
When a water pump falls to draw water, a bucket of water poured into it sets it working. Why ?
Explain what is the rectilinear propagation of light?