Answer:
The volume air flow rate is
The output of the fan is 0.446 hp
Solution:
As per the question:
Diameter of the round duct, d = 0.30 m
Radius of the duct, R =
Pressure of the opening, P = 2.5 cm of water = 0.025 m of water
P =
Density of air,
Now, the velocity, v can be calculated as:
Now,
Volume rate of air flow is given by:
Now,
1 ft = 3.2808 m
Now, the output of the fan in horsepower (hp):
Power output, P' =
Now,
1 hp = 746 W
P' (in hp) =
Answer:
mainly used to combine two tables based on a specified common field between them. If we talk in terms of Relational algebra, it is the cartesian product of two tables followed by the selection operation. Thus, we can execute the product and selection process on two tables using a single join statement. We can use either 'on' or 'using' clause in MySQL to apply predicates to the join queries.
A Join can be broadly divided into two types:
Inner Join
Outer Join
Inner Join is a join that can be used to return all the values that have matching values in both the tables. Inner Join can be depicted using the below diagram.
The inner join can be further divided into the following types:
Equi Join
Natural Join
Now let us learn about these inner joins one-by-one.
Hello!! The correct answer would be C!! I took the same test!
Explanation:
I won't answer each of these, but will give you an explaination of how to solve for each.
You'll need to use Ohm's Law and Kirchhoff's Voltage Law.
Remember Ohm's Law as .
Kirchoff's Voltage Law says that the sum of voltages for a given circuit "loop" must equal zero. In the circuit shown, this means that the voltage provided by the battery (E_T) equals the voltage drop across each of the three resisters in the loop.
A couple of other helpful notes:
These three resistors are in <em>series</em> which means that the current flowing through them is equal.
So it is easy to see that...
Solve for the voltage across E_2 and E_3. The sum of the three voltages equals the voltage of the battery (E_T).
Explanation:
no noooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooon