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.)

Which levels of government establish and implement educational requirements for minors

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.

James joule carefully measured the difference in temperature of the water at the top and bottom of a waterfall. why did he expect a difference