Consider to cars traveling directly towards each other. car a has twice the mass of car b. in order for the cars to completely stop when they collide, which of the following is true? (remember, momentum = mass * velocity) car a should have twice the velocity of car b car b should have twice the velocity of car a car a should have 4x the velocity of car b car b should have 4x the velocity of car a

When does your body conduct current more readily?

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?

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy