Answer:
winter viscosity grades
Explanation:
The “W”/winter viscosity grades describe the oil's viscosity under cold temperature engine starting conditions. There's a Low Temperature Cranking Viscosity which sets a viscosity requirement at various low temperatures to ensure that the oil isn't too thick so that the starter motor can't crank the engine over.
Answer:
i) SF:
ii) BM : 
Explanation:
Let's take,
Making y the subject of formula, we have :

For shear force (SF), we have:
This is the area of the diagram.

The shear force equation =
For bending moment (BM):


The bending moment equation =

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
That due to the specific tasks that needs to be accomplished by each program to make an all encompassing program would be inefficient and full of bugs