A thin beam of light of wavelength 625 nm goes through a thin slit and falls on a screen 3.00 m past the slit
You observe that the first completely dark fringes occur on the screen at distances of ±8.24 mm from the central bright fringe, and that the central bright fringe has an intensity of 2.00 W/m2 at its center.
(a) How wide is the slit?
(b) What is the intensity of light at a point on the screen that is one-quarter of the way from the central bright fringe to the first dark fringe?
(a) 0.228 mm (b) 1.62 W/m2
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Pressure in a Liquid: A cubical box 25.0 cm on each side is immersed in a fluid. The pressure at the top surface of the box is 109.40 kPa and the pressure on the bottom surface is 112.00 kPa. What is the density of the fluid?
A. 1000 kg/m3 B. 1030 kg/m3 C. 1060 kg/m3 D. 1090 kg/m3 E. 1120 kg/m3
As measured from the Earth, a spacecraft is moving at speed 0.80c toward a second spacecraft moving at speed 0.60c back toward the first spacecraft. What is the speed of the first spacecraft as viewed from the second spacecraft?
a. 0.81c b. 0.95c c. 0.38c d. 0.20c
____________________ is the resistance of a gas to the flow of radiation
Fill in the blank(s) with correct word
All life on Earth is based on carbon chemistry
Indicate whether the statement is true or false