Why can a person get an electric shock when they walk across a room on a rug and touch a doorknob? a) electrons are transferred between their body and the carpet, so they have an electric charge. the shock happens when electrons jump between their body and the doorknob. b) electrons are transferred between your body and the carpet, so they have an electric charge. the shock happens when electrons jump between their body and the carpet. c) the shock happens when electrons jump directly between the carpet and the doorknob. d) electrons are made within their body, so they have an electric charge. the shock happens when electrons jump between their body and the doorknob.

Which statement correctly describes the relationship between frequency and wavelength?

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?