7. A dynamo coil rotates 4200 rotation per minute in a magnetic flux of flux density 0.05 Tesla. If the number of turns of the coil is 100 turns and the area of each of them is 25
cm?. Calculate:
A. The maximum value of the e. m.f.
B. Its effective value
C. The instantaneous value of the e. m.f. when the coil rotates 1/12 rotation from the
perpendicular plane

Can anyOne solve No. C ?

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j

What is the increase in density of a medium due to wave travel?