Una barra conductora de L = 0,9 m se mueve sin fricción sobre dos rieles conductores horizontales, Unos extremos de los rieles se conectan a una batería de 15 V y un interruptor. La barra se mueve en una región donde existe un campo magnético uniforme B= −1,5 ˆz T. La barra tiene una masa de 0,5 kg y una resistencia de 8 Ω. a) Encuentre la aceleración de la barra, en t = 0 s, justo cuando se cierra el interruptor. b) Encuentre la aceleración de la barra cuando se mueve hacia la derecha con rapidez 2 m/s.

(science)study the following ocean currents map. an ocean currents map is shown. on the map the locations for san diego, california and savannah, georgia are marked. there is a looping current from the north past san diego and a looping current from the south near savannah which statement is most likely correct about the average temperatures in san diego, california as compared to savannah, georgia? it is higher in savannah because of the cool ocean currents from the south. it is higher in savannah because of the warm ocean currents from the north. it is lower in san diego because of the warm ocean currents from the south. it is lower in san diego because of the cool ocean currents from the north.

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?