A12-pole, brushless, dc motor has a no-load speed of 5000rpm and a stall torque of 50 in-oz when operating at rated voltage of 60v. testing shows that no-load speed and stall torque vary linearly with applied voltage. also, with a constant applied voltage the speed decreases linearly as delivered torque increases. calculate the following: torque that the motor delivers at 2000 rpm when operated at rated voltage. t a) b) fundamental frequency of the applied voltage waveform at this operating condition ) stall orque and no-load speed when operated at 40v. d) motor speed when operated at 40 volts and delivering 15 in-oz of torque n- e) the voltage that should be applied to the motor to achieve a speed of 2000 rpm when delivering 5 in-oz of torque.

i would like to make dinner for my mom, dad, and sister

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.