An elephant has a weight of 40000N,
and her feet cover a
total area of 0.1m2. A
woman weight 600N
and the
total area of her
shoes in contact with
the ground is
0.0015m2. who exerts
the greater pressure
on the ground?

Ahollow metal sphere has 6 cm and 11 cm inner and outer radii, respectively. the surface charge density on the inside surface is −100nc/m2. the surface charge density on the exterior surface is:

What must be the same for any two resistors that are connected in series ? a. the potntial diffrence across each b. the rate at which charge moves through each c. the rate at which energy is used by each d. the resistance to the flow of charge of each

Why did thomson's results from experimenting with cathode rays cause a big change in specific thought about atoms ?