A round rotor 60 Hz synchronous generator has Eg = 2.0 per unit and Xs = 1.5 per unit. a. (5 points) In steady state the generator delivers 0.8 per unit real power (P) to an infinite bus with V = 1.0 per unit. Find the steady state value of the rotor angle, o. b. (5 points) If the answer to part (a) is 0.6 radians (it’s not), find the value of the stiffness coefficient o.

Aspecial electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. the sensor measures the magnitude of the normal force that the seat exerts on a rider. the loop-the-loop ride is in the vertical plane and its radius is 23 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 740 n. at the top of the loop, the rider is upside down and moving, and the sensor reads 370 n. what is the speed of the rider at the top of the loop?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)

Relative to the ground below, how many joules of potential energy does a 1000-kg boulder have at the top of a 5-m ledge?