DOK 3 (504 may, for time sake omit this section) 9. A 22,000 kg jet aircraft is launched off an aircraft carrier on a
catapult having a distance of 90 meters. The launch over that
distance occurs in 4 seconds time and ends up with a final velocity off
the carrier deck of 70 m/s. What was the force required by the catapult
to launch the Jet?

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)

You can melt ice by applying pressure because the solid/liquid line has a slope.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?