A 393-kg block of iron is lowered into a tank of water by a cable attached to a crane. a) What is the tension in the cable when the block is half submerged? b) What is the tension in the cable when the block is fully submerged?

Airplane flight best illustrates 

An arch is a stable architectural form because adjacent building pieces undergo

How many electrons are in a positive ion of Helium (He has two protons)

A block of styrofoam floats on water while a same size block of lead lies submerged in the water. The buoyant force is 

Gas in a cylinder can be compressed by a piston at one end. If the gas occupies 0.16 m3 when it is at atmospheric pressure (P0), what applied pressure would result in it occupying 0.040 m3 ?  

The density of a substance depends upon

The wavelength used by an electron microscope to view atoms is about:

We are able to drink water through a straw mainly because of

The wavelength used by an electron microscope to view atoms is about: