When you see an object that is not a light source, you are seeing light waves ___ by the object
1 answer:
You might be interested in
Answer:
L = 1.545 m
Explanation:
Let the total length of the rod is L
now the torque must applied on the other end of the rod so that it will balance the torque due to weight of rock on other side of fulcrum
so we will have
so we have
F = 663 N