PL HELP A cable is attached to a 5.0 kg box and used to pull the box upwards. What tension force is required to accelerate the box upwards at a rate of 4.0 m/s2?

520 N
480 N
500 N
20 N

Aplane takes off from an airport and flies to town a, located d1 = 215 km from the airport in the direction 20.0° north of east. the plane then flies to town b, located d2 = 230 km at 30.0° west of north from town a. use graphical methods to determine the distance and direction from town b to the airport. (enter the distance in km and the direction in degrees south of west.)

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.