Answer:
volume = about 117.81 feet^3
density = 0.763942 lb/ft^3
Step-by-step explanation:
this is if the piece of pine is cylindrical
Answer:
The tension force transmitted through the chains
Step-by-step explanation:
The gravitational force can only pull the block downward, so the first two options are incorrect. Normal force is present only when an object is on a surface, so the last option is also incorrect.
Tension is a force exerted by a string or chain, so the third option is correct.
Power = Current *Voltage
You already have the current, but not the voltage.
But you are given resistance, and you know that
Voltage=Current*Resistance
Therefore
V=I*R=4*12=48V
So you have 48V
Now you can figure out the Power
P=I*V=4*48=192W
Therefore you have 192W.
hope this helps