How would you solve these questions using Trigonomic Identities? sin^2x = tan^2x/1+tan^2x sinx+cosx/tanx = 1/cosxtanx
if iron weighs 0.25lbs. per cubic inch, an iron bar 8'6" by 4" by 1/2" weighs?
the number sacks necessary for a 4inch sidewalk 6ft wide and 27ft long at 6 sacks of cement per cubic yard of concrete is?
the acid-dissociation constanstant for acetic acid CH3COOH(aq)<->H+(aq)+CH3COO-(aq) is known to be 1.8X10^-5 at 25C Caclulate G0f forCH3COO-(aq). G0f=-396.56KJ/mol for CH3COOH (aq), 0 Kj/mol for H+ explain your answer
one mole of ideal gas is slowly heated at a constant pressure of 2.0 atm from 200 to 300k.Calculate q,w,£GE,and£GH,allinjoules.AssumeCp=5 2 R p =1 atm n =2 Cp =(5/2)R £GT =300-200 = 100 k so Cv =Cp -R = (3/2)R q =nCp£GT= 2(5/2)R*100 = 500R =500*8.314 =4...
According to behavioral treatment approaches, abnormal behavior is learned through: (Points: 5) thoughts based on the perception of events. vicarious experiences. rewards and punishments. conflict experiences in early childhood.
Stress has the ability to cause the immune system to: (Points: 5) be under stimulated. attack rather than support the body. repair itself. increase its resources.
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