Una bobina cuadrada y plana de 25 cm2 de superfi cie construida con cinco espiras está en el plano xy. a. Calcula la fem inducida si se aplica un campo magnético en la dirección del eje z que varía de 0,5 T a 0,2 T en 0,1 s.

b. Calcula la fem inducida si el campo permanece constante de 0,5 T y la bobina gira hasta colocarse en el plano xz en 0,1 s.

If two metal balls each have a charge of -10^-6 c and the repulsive force between them is 1 n, how far apart are they? (coulomb's constant is k = 9.0x 10^9 n-m^2/c^2? 9.5 m 9.0 mm 9.5 cm 0.9 m .

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?