4. The primary coil of a transformer has 225 turns and secondary coil has 1800 turns. The potential difference in the primary coil is 250 V and the power input is 3 600 W.
a) Is this a step-up or step-down transformer?
b) What is the current in the primary coil?
c) What is the power in the secondary coil?
d) What is the potential difference in the secondary coil? e) What is the current in the secondary coil?

SHOW STEPS!

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.