Velocity range 0-200 m/s 200-400 m/s 400-600 m/s 600-800 m/s 800-1000 m/s 1000-1200 m/s #of balls at 500 m/s of balls at 700 m/s of ball at 900m/s 4 0 1 3 1 3 1 3 5 4 1 3 5 0 1 2 1200-1400 m/s 0 0 1 over 1400 m/s 0 0 mass of one ball initial k. e. of the system 4.34556e-26 4.35e-26 4.34556e-26 2.64e-19 8.15e-20 1.60e-19 minimum k. e. after 60 sec. k. e. % error maximum k. e. after 60 sec k. e. % error initial and max 1.99e-19 5.12776e-20 6.60526e-20 3706.67% 5863.95% 2460.91% 1.25152e-19 2.81592e-19 8.25874e-20 136.00% 2163.27% 666.67% average k. e. max and min 9.56e-20 6.69325e-20 2.40e-19

Water at room temperature of 20.0°c is poured into an aluminum cylinder which has graduation markings etched on the inside. the reading in the graduations is 300.0 cc. the cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°c. what is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? the volume coefficient of expansion of water is 2.07 x 10^-4 k-1, and the linear coefficient of expansion of aluminum is 23.0 x 10^-6 k-1. a) 305.0 cc b) 304.0 cc c) 303.5 cc d) 303.3 cc e) 304.5 cc

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?