All spiders are very sensitive to vibrations. an orb spider will sit at the center of its large, circular web and monitor radial threads for vibrations created when an insect lands. assume that these threads are made of silk with a linear density of 1.0  105 kg/m under a tension of 0.40 n, both typical numbers. if an insect lands in the web 30 cm from the spider, how long will it take for the spider to find out?

An isolated conducting spherical shell carries a positive charge. part a which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? electric potential inside the shell is constant and outside the shell is changing as 1/r2 both the electric potential and the electric field does change with r inside and outside the spherical shell electric potential inside and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is equal to zero electric field inside and outside the shell is constant (does not change with the position r), but is not equal to zero electric field inside and outside the shell is changing as 1/r (where r is the distance from the center of the sphere) electric field inside is equal to zero and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is changing as 1/r electric field inside and outside the shell is changing as 1/r2 electric field inside is equal to zero and outside the shell is changing as 1/r2 electric field inside and outside the shell is zero electric field inside is constant and outside the shell is changing as 1/r

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

How do cracks affect the rate of weathering?