Asolid cylinder of mass m and radius r is kept in equilibrium on a horizontal rough surface. three unstretched springs of spring constants k, 2k, 3k are attached to cylinder as shown in the figure. find the period of small oscillations. (given that surface is rough enough to prevent slipping of cylinder.)

What would the difference of spectral lines emitted by hydrogen gas in distant galaxies which is normally found at a wavelength of 21 cm on earth, be observed at 21.1 centimeters?

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.