Physics question, require assistance.
determine the type of energy transfer when the motor of a fan is turned on.
a electrical energy in converted to mechanical energy
b electrical energy is converted to potential energy
c electrical energy is converted to heat and mechanical energy
d electrical energy is converted to wind energy
what evidence for the transformation of energy does the running fan produce? select all that apply.
a the blades of the fan are spinning.
b light is produced.
c an air flow is felt.
d sparks can be seen.
e the fan warms up.
what is true of the efficiency of this motor?
a it is more than 100% efficient.
b it is 100% efficient.
c it is less than 100% efficient.
d none of the above

Industrial processes often require the damping of vibrations. consider a workbench that uses four large ideal springs in place of traditional legs, with each spring supporting one corner of the workbench and exhibiting a force constant of 47500 n/m. this workbench is used when creating products that involve highly unstable chemicals. according to specifications, the acceleration of the manufacturing equipment must be held to less than 22.3 m/s2 for the manufacturing process to proceed safely. the amplitude of vibrations are expected to remain under 0.622 mm throughout. given that the workbench and maufacturing equipment combine to 6.05 kg, find the maximum acceleration expected of the equipment and workbench. (ignore the mass of the springs.)