If a certain silver wire has a resistance of 9.00 ω at 30.0°c, what resistance will it have at 44.0°c?

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:

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?