An airplane flying at a steady velocity of 80m/s eastwards at height of 1000m drops package of supplies a) find the initial velocities of the package?
B) how long will it take for the package to reach the ground?

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

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?

Abox is sliding on a frictionless surface when it suddenly begins to rain heavily. if the downpour of rainfall falls vertically into the box