ORGANS. Tissues are grouped together in the body to form organs. These include the brain, heart, lungs, kidneys, and liver. Each body organ has a specific shape and is made up of different types of tissue that work together.
Since no external torques are acting on the skater, his angular momentum must be conserved in the two different situations (arms and legs in - arms out and one leg out). The angular momentum is given by
where I is the moment of inertia and
the angular speed.
Labeling with "1" the situation where the skater has arms and legs in, and with "2" the situation where the skater has arms out and one leg out, the conservation of the angular momentum becomes
or
We know the moment of inertia and the angular speed of the skater when he has arms and legs in:
and also the moment of inertia of the skater when he has arms and one leg out:
so we can find his angular speed when he opens the arms and one leg:
Answer:
The mass flow rate of air is 0.732 kg/s.
The velocity at the exit is 5.927 m/s.
Explanation:
Given that,
Diameter = 28 cm
Enter pressure= 200 kPa
Enter temperature = 20°C
Velocity = 5 m/s
Exit pressure = 180 kPa
Exit temperature = 40°C
We need to calculate the mass flow rate of air
Using formula of mass flow rate
Put the value into the formula
We need to calculate the volume flow rate
Using formula of volume flow rate
We need to calculate the velocity at the exit
Using formula of velocity
Put the value into the formula
Hence, The mass flow rate of air is 0.732 kg/s.
The velocity at the exit is 5.927 m/s.