The specific gravity is the ratio of the density of oil to the density of water. Since the density of water is 1g/ml, the density of a substance is numerically the same as the specific gravity.
However, specific gravity is a dimensionless number, while density has units mass/volume.
So, the density of oil is .901 g/ml, but the specific gravity is just .901
In Imperial units, the density of the oil is 56.2 lb/ft^3, but the specific gravity is still .901
Answer: 
Explanation:
Given
Initial angular speed is 
Final angular speed is 
Time period 
Magnitude of the fan's acceleration is given by
Insert the values
Thus, fan angular acceleration is
Answer:
Explanation:
Given
initial velocity 
At maximum height velocity of ball is zero
using
where v=final velocity
u=initial velocity
a=acceleration
s=displacement
time taken by the ball to reach the maximum height
At 
height of ball is
i.e. ball is moving downward
height at 
For a lever, the mechanical advantage is the ratio of the lever arms. Since the lever arm of the opener is always greater than that of the output arm, the mechanical advantage is greater than 1.
<span>3.9 L I believe
I hope this helps!</span>
