Answer:
a) 
b) 
Explanation:
From the question we are told that:
Pressure 
Diameter 
Generally at sea level
Generally the Power series equation for Mach number is mathematically given by
Therefore
Mass flow rate
Generally the equation for Velocity at throat is mathematically given by
)
Where
Therefore
Generally the equation for Mass flow rate is mathematically given by
Business cycle and its growth followed by economic contraction the amount of time it takes a business to produce products in the following way.
Explanation:
The business cycle is the periodic but irregular up-and-down movement in economic activity, measured by fluctuations in real gross domestic product (GDP) and other macroeconomic variables.
A business cycle is typically characterized by four phases—recession, recovery, growth, and decline—that repeat themselves over time.
Economists note, however, that complete business cycles vary in length. The duration of business cycles can be anywhere from about two to twelve years, with most cycles averaging six years in length.
FACTORS THAT SHAPE BUSINESS CYCLES
Volatility of Investment Spending
- Variations in investment spending is one of the important factors in business cycles. Investment spending is considered the most volatile component of the aggregate or total demand (it varies much more from year to year than the largest component of the aggregate demand, the consumption spending), and empirical studies by economists have revealed that the volatility of the investment component is an important factor in explaining business cycles in the United States.
Momentum
Technological Innovations
Variations in Inventories
Fluctuations in Government Spending
Politically Generated Business Cycles
Monetary Policies
Fluctuations in Exports and Imports
Answer:
A. Manufacturers rating capacity ↔ 3. Must be marked on all jacks; must not be exceeded
B. Block Used to lift and hold heavy loads, allow them for travel ↔ 1. Place the jack head against this
C. Level surface ↔ 4. Place this under the base of the jack when it's necessary to provide a firm foundation
D. Jack ↔ 2. Used to lift and hold heavy loads, allow them for travel
Explanation:
The manufacturers rating for a jack is labelled on all jacks and should be referenced to compare with the load to be lifted so as to ensure a safe and successful lifting.
In order to lift a load, such as a car, it is required to place the jack on a level surface to provide balance during the lifting task
The head of the jack is placed against the block for lifting heavy objects for proper performance
Answer
For isotropic material plastic yielding depends upon magnitude of the principle stress not on the direction.
Tresca and Von Mises yield criteria are the yield model which is widely used.
The Tresca yield criterion stated that yielding will occur in a material only when the greatest maximum shear stress reaches a critical value.
max{|σ₁ - σ₂|,|σ₂ - σ₃|,|σ₃ - σ₁|} = σ_f
under plane stress condition
|σ₁ - σ₂| = σ_f
The Von mises yielding criteria stated that the yielding will occur when elastic energy of distortion reaches critical value.
σ₁² - σ₁ σ₂ + σ₂² = σ²_f
