O bara din cupru poate colisa pe doua mine orizontale ad si ce ale caror capete C si D sunt legate la bornele unui generator cu t. e.m. (E = 10 v) si rezistenta interioara (r=0,5) se neglijeaza rezisteanta sinelor si a barei din cupru. a)Ce intensitate are curentul electric ce se stabileste prin circuitb? b)Se aseaza un magnet in forma de u ca in figura alaturata. laturile sale au o latime de 10 cm. Inductia magnetifca a campului magnetic dintre poli este B =0,05 ce se observa daca bara se lasa libera?

Frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen. t or f

Aregular polygon has angkes of size 150° each. how many side has the polygon

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.