12) An airplane is flying at 180 m/s horizontally at a height of 1200 m, at which point, it releases a package. a) Determine the time it takes the package to hit the floor.
b) Determine the range of the package as it hits the ground.
c) Determine the final vertical velocity as the object hits the ground.

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

What causes the formation of ocean currents?