Q

QuestionPhysics

Choose suitable examples of materials and their uses in order to provide an illustrated explanation of the properties of the following: conductivity, resistivity, insulators and conductors, ohmic and non-ohmic conductors, capacitors acting as filters in AC circuits and semi-conductors.

"Which statement best describes Gay-Lussac’s Law? Pressure and temperature are directly proportional to one another. Temperature and volume are directly proportional to one another. Temperature and volume are inversely proportional to one another. Pressure and temperature are inversely proportional to one another."

Determine the total resistance of each of the following parallel circuits. Then use Gizmo to check your answer. (You can calculate the total resistance from the current and voltage using Ohm’s law, or use the Ohmmeter to measure the resistance directly.) A parallel circuit with a 20-ohm resistor and a 10-ohm resistor. A parallel circuit with two 20-ohm resistors and a 10-ohm resistor. A parallel circuit with a 15-ohm light bulb and a 20-ohm resistor. A parallel circuit with two 100-ohm resistors and a 20-ohm resistor. A parallel circuit with a 10-ohm, 20-ohm, 100-ohm and 200-ohm resistor

A NASA spacecraft measures the rate, R, at which atmospheric pressure on Mars decreases with altitude as R = 0.0406 kPa km-1. Convert R to mJ m-4.

The speed limit on some interstate highways is roughly 125 km/h. A. What is this in meters per second? B. How many miles per hour is this?

Which equation best describes the law of conservation of momentum? A. p=mv B. F=ma C. Δp=FΔt D. p initial​ =p final ​