##25C## is ##25+273=298 K## so ##DeltaT=100-298=-198 K## You can also see that ##100 K=100-273=-173 C## and ##DeltaT=-173-25=-198 C## The interesting thing is that the two scales […]
As below Let us consider two unit vectors in X-Y plane as follows : ##hata=cosAhati+sinAhatj## ##hatb=cos(90+B)hati+sin(90+B)## ##=-sinBhati+cosBhatj## Now ## hata xx hatb=(cosAhati+sinAhatj)xx(-sinBhati+cosBhatj)## ##=>|hata||hatb|sinthetahatk=cosAcosB(hatixxhatj)-sinAsinB(hatjxxhati)## Applying Properties of […]
were obtained from direct observation of planetary motion but can be derived from Newton’s universal law. You might want to look at:http://www.physicsclassroom.com/class/circles/Lesson-4/Kepler-s-Three-Laws A quick example is […]
##The SI unit of electric field is (N/C) or (V/m).## ##N/C(Newtons per Coulomb)## ##V/m(Volts per meter)## ##The SI unit of electric field is (N/C) or (V/m).## […]
##g=3.7N##/##kg## The weight(##w##) of an object with mass (##m##) in a gravitational field with strength(##g##) are related by the formula: ##w=mg## ##=>g=w/m## In our case: ##=>g=(370N)/(100kg)## […]