Two objects were lifted by a machine. Object A has a mass of 2 kilograms and was lifted at a speed of 2 m/s. Object B has a mass of 4 kg and was lifted at a rate of 3 m/s. a. Which object had more kinetic energy while it was being lifted?

b. Which object had more potential energy when it was lifted to a distance of 10 meters?

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?

In a series circuit the __ is the same at every point

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false