A hockey player is wearing ice skates and pushes against the wall propelling her backward on the law of motion, which of the following best compares the forces acting between the wall and the hockey player? A The forces are equal and applied against gravity
B The forces are equal and applied in the opposite direction
C
The forces are different sizes and applied in the opposite direction
D. The forces are equal and applied in the same direction

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

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