Answer:

Explanation:
given,
mass of the weight = 8 Kg
distance = 0.55 m
angle below horizontal = 30°
torque about shoulder




torque about his shoulder join is equal to 
Try this solution, answers are marked with red colour.
Answer:
D-it's never acceptable to ignore rules and etiquette
Explanation:
An electric motor is an electrical machine that converts electrical energy into mechanical energy.
Electric motors work on the principal of the interaction between magnetic field electr-magnetism. A loop which is carrying the current is placed in a magnetic field. The loop will experience a torque. The torque starts rotating the coil and the propellers start to rotate when the current passes through the loop.
Water boiling, no cheamical bonds have been altered.