A resistance is added in parallel to a 470 Ω resistance to give an effective resistance of 330 Ω. What is the approximate value of the added resistance? A) 140 Ω
B) 680 Ω
C) 1.1 kΩ
D) 1.8 kΩ

Anton created a chart listing different types of materials.which best complete the chart? (a)x: copper y: glass(b)x: rubber y: copper(c)x: paper y: silicon(d)x: silicon y: glass

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

If a balloon is taken outside on a very cold day, what will occur?