A pilot 'banks' the wings of his aircraft so as to travel at a speed of 390 km h in a horizontal circular path of radius 4.8 km. At what angle should he bank his aircraft in order to do this?

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.)

Ajoint produces movement when its angle decreases. which type of movement is it?

Based on the image below what would an observer on the nighttime side of earth observe?