Two ice-hockey players simultaneously strike a puck with their sticks. the stick of one player exerts an eastward force on the puck of 12 n. the other player’s stick exerts a northward force of 15 n on the puck. assuming that there is no frictional force between the puck and the ice, what is the magnitude of the net horizontal force on the puck?

Fn= 19.21 N

Explanation:

Forces acting on the puck

F₁ = 12 N  eastward : Force exerted by the first player's stick

F₁ = 15 N  northward :  Force exerted by the second player's stick

Magnitude of the net horizontal force on the puck (Fn)

We apply the formula to calculate resulting forces in rectangular or perpendicular coordinates :

Fn= 19.21 N

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

its c i just checked it