Aplane comes out of a power dive, turning upward in a curve whose center of curvature is 1300 m above the plane. the plane's speed is 260 m/s.

a. calculate the upward force of the seat cushion on the 100 kg pilot of the plane.

b. calculate the upward force on a 90.0 g sample of blood in the pilot's head.

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

Your science teacher brings in a speaker to talk to your class about climate change. during the session, students ask a few questions. which questions are related to the current evidence on climate change