A piece of black tape is now placed over the upper half of the lens. Which of the follow is true. a. Only the lower half of the object (i. e., the arrow tail) will show on the screen. b. Only the upper half of the object (i. e., the arrow head) will show on the screen. c. The whole object will still show on the screen.

What should the power status of a circuit be when measuring resistance with an ohmmeter?

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?

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.