A14,92kw , 400 v , 400 r. p.m . dc shunt motor draws a current of 40a when running at full-load. the moment of inertia of the roating system is 7,5kg-m^2. if the starting current is 1.2 times full load current. calculate a) full-load torque. b) the time required for the motor to attain the reted speed against full-load.

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.