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(1-cos x)(sin x - 1) = 0? Electro chemistry questions, need help asap for 10 points? An rc circuit has a resistancs of 2k ohms and a capacitance of .01592 microfarad. the frequency is 5khz. what is the phase angle? If the force,F, has magnitude 100 and is directed 45◦ North east, then F = ai + bj. Find a and b.? Write the value of stars and smilies ,if 190+78=200+stars=smilies?