Currently you sell a resistor that has a length of 9 cm, a cross-sectional area of 3 cm2 and uses Metal A with an electrical resistivity of 2 ohm-cm. Unfortunately the melting point of the resistive metal is too low and these resistors keep failing due to melting in operation. You are asked to design a new resistor with the same resistance using Metal B which has a higher melting temperature. Metal B has an electrical resistivity of 6 ohm-cm. What would you recommend for its design

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.