The Rate of Change of the Total Number, in Thousand

question 2

Multiple Choice

The rate of change of the total number, in thousand of articles, of research articles in the prominent journal Physics Review written by researchers in Europe is shown in the graph, where t is time in years represents the start of 1987) . Use both left and right Riemann sums with 7 subdivisions to estimate the total number of articles in Physics Review written by researchers in Europe in the 14-year period beginning 1987. (Estimate each value of to the nearest 0.5) . Use the sums to obtain an estimate of .

• A)60,000 articles
• B)52,000 articles
• C)8,000 articles
• D)56,000 articles
• E)4,000 articles

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Definitions:

Interference Fit

A method of fitting two parts together using a dimension in which the size of the hole is smaller than the size of the shaft to be inserted, creating a high-pressure seal.

Locational Fits

Types of fits defined by standard tolerances that determine how tightly or loosely two parts will connect, particularly regarding their location accuracy.

Mating Parts

Mating parts refer to components designed to fit together within an assembly, requiring precise manufacturing to ensure correct fit and function.

Clearance

The intentional gap or space between two parts or components to ensure they do not interfere with each other, allowing for free movement or assembly.