A polythene rod may be charged by rubbing it with a cloth while being held in the hand but a metal rod cannot be charged in a similar way. Explain why

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

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?

Which class of lever is a baseball bat? what are the parts of a baseball bat's lever class? describe each one. enter your answer in the space provided.(this question you write your own answer.)i couldn't find the right category, so sorry if this doesn't match.