All of these are examples of electrochemical cells used in our daily lives. Which involve voltaic electrochemical cells? Check all that apply. a cell that powers a flashlight a cell used to make gold-plated jewelry a cell that charges your cell phone battery a cell used to electrically split aluminum oxide into aluminum metal a cell that powers a TV remote control

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

Aparticle travels in a circular orbit of radius 21 m. its speed is changing at a rate of 23.1 m/s2 at an instant when its speed is 37.2 m/s. what is the magnitude of the acceleration (in m/s? ) of the particle?

A-of 75 cm by cm by 17.5 cm up. of is 2 kg a , in ,if it is in , kg/?