what is the velocity of a car on I-80 starting the trip at 2.3 miles and ending at 77 miles starting 5 minutes getting on the expressway, ending at 45 minutes?

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 3.00 ms . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

The diagram shows an example of convection. which label belongs on the arrow? a) warmer water sinks b) warmer water rises c) cooler water sinks d) cooler water rises