An electrician is trying to decide which kind of material to use to wire a house. carbon steel: conductivity = 1.43 × 10−7, resistance = 1 × 1010

copper: conductivity = 5.96 × 107, resistance = 1.68 × 10-8

gold: conductivity = 4.11 × 107, resistance = 2.44 × 10−8

iron: conductivity = 1 × 107, resistance = 1.0 × 10−7

Based on this information, which material should the electrician use?

(1 point)

copper

iron

gold

carbon steel

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false