Cho 3 hộp đen X ,Y, Z có 3 linh kiện khác nhau là điện trở thuần, cuộn cảm thuần hoặc tụ điện. biết khi đặt vào 2 đầu đoạn mạnh MN diện áp U=100√2cos100πt(v) thì cường độ dòng diện chạy trong mạch i=√2cos100πt(v) và điện áp giữa 2 đầu đoạn mạch AB và AN là U =100√2cos100πt (v) và U =200cos(100πt-π/4)(v) .xác định từng loại linh kiện của hộp đen và xác định giá trị của chúng

(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.

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount