What is the mechanical advantage of the wheel and axle shown below?

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

Which of the following compounds would be primarily ionic? methane, ch4, ammonia nh3, calcium chloride, cacl2, or carbon dioxide, co2

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge