2. Ideal single-phase step-down transformer U1 / U2 = 2400/120V. The machine is connected to the grid electricity with a voltage of 2.6 kV. From the sine shape at this time the steel core is  = 0.09sin314tWb.
Determine the number of loops of the primary and secondary wires

Athermometer is removed from a room where the temperature is 70° f and is taken outside, where the air temperature is 10° f. after one-half minute the thermometer reads 60° f. what is the reading of the thermometer at t = 1 min? (round your answer to two decimal places.) ° f how long will it take for the thermometer to reach 30° f? (round your answer to two decimal places.)

What must be the same for any two resistors that are connected in series ? a. the potntial diffrence across each b. the rate at which charge moves through each c. the rate at which energy is used by each d. the resistance to the flow of charge of each

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.