Which phrase is evidence of the limits of what science can study? Group of answer choices

only a phenomenon that a scientist can observe with instruments

only a phenomenon that a scientist can observe without instruments

only a phenomenon that a scientist will be able to explain with certainty

any phenomenon that a scientist can observe or model

What kind of simple machine is a catapult?

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_

Patricia is trying to compare the average rainfall of new york to that of arizona. a comparison between these two states for the months of july through september would best be measured in