1. The following are ordinary physics problems. Place the answer in scientific notation when appropriate and simplify the units (Scientific notation is used when it takes less time to write than the ordinary number does. As an example 200 is easier to write than 2.00x10', but 2.00x10" is easier to write than 200,000,000). Do your best to cancel units, and attempt to show the simplified units in the final answer. a. I, = 21 45 x10 kg 120 x10 kg/s' b. K = -(6.6x 10' kg)(2.1 1 x10' m/s) = C. F = 9.0x109 N. m (3.2x10*C)(9.6x10"C) (0.32m) d. Rp = R. 45x10 0 94 x10'0 (17 x 10'J)-(3.3 x 103 5) e . e = (1.7 x10'J) f. (133)sin25.0" = (150) sine 0 = g. Klar = (6.63 x10-34 J .5) (7.09 x1014s )-2.17x10-19J = h. 2.25 x 10* m/s 3.00 x 10' m/s 2. Often problems in physics are done with variables only. Solve for the variable indicated. Don't let the different letters confuse you. Manipulate them algebraically as though they were numbers. a. v = v. +2a(5-s.) ,0= g. B=Hal 2x r b. K = -kx 2 h. X = mAL d = d C. T =2x g= i. PV = nRT .T = j. sin 0 = - .8 = d. F =Gum, e. mgh =_ k. qV = -my . V= 2 f. x=x, tul+-ar 1. f