Suppose that e = 66.0 v , r = 230 ω and l = 0.170 h . with switch s2 open, switch s1 is left closed until a constant current is established. then s2 is closed and s1 opened, taking the battery out of the circuit. a: what is the initial current in the resistor, just after s2 is closed and s1 is opened? b: what is the current in the resistor at t = 4.50×10−4 s ? c: what is the potential difference between points b and c at t = 4.50×10−4 s ? d: which point is at a higher potential? e: how long does it take the current to decrease to half its initial value? university physics with moderen physics 14th edition

Which expression allows you to determine the mechanical advantage of an inclined plane? a. height of plane / input force b. length of plane / input force c. length of plane / height of plane d. height of plane / length of plane

During spring semester at mit, residents of the parallel buildings of the east campus dorms battle one another with large catapults that are made with surgical hose mounted on a window frame. a balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. assume that the stretching of the hose obeys hooke's law with a spring constant of 89.0 n/m. if the hose is stretched by 5.80 m and then released, how much work does the force from the hose do on the balloon in the pouch by the time the hose reaches its relaxed length? unitst 3 number-1497 the tolerance is +/-5% open show work click if you would like to show work for this question:

Energy can be transformed from one form to another. the diagram shows one such process. which energy transformation is represented in the diagram? nuclear to thermal and radiant nuclear to electrical and chemical chemical to nuclear and radiant chemical to electrical and nuclear