A crowbar having the length of 1.75m is used to balance a load of 500 N. if the distance between the fulgrum and the load is 0.5m, calculate i)effort applied

How many neutrons does plutonium -196 with an atomic number of 78.

Certain bacteria (such as aquaspirillum magnetotacticum) tend to swim toward the earth’s geographic north pole because they contain tiny particles, called magnetosomes, that are sensitive to a magnetic field. if a transmission line carrying 100 a is laid underwater, at what range of distances would the magnetic field from this line be great enough to interfere with the migration of these bacteria? (assume that a field less than 5% of the earth’s field would have little effect on the bacteria. take the earth’s field to be 5.0 * 10-5 t, and ignore the effects of the seawater.)

What is the technical name for super glue type adhesives?