a train is moving at 4.0 km/h. It accelerates at 60 km/h/s for 0.75 h. What is its speed by the of the 0.75 h

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

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 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?