Problem 1 In the two-peg of a dummy level, the following abservation are taken. INSTRUMENT SET UP NEAR A INSTRUMENT SET UP NEAR B Rad Reading on A 0.921 0.367 Rad Reading on B 1430 0.768 a. What is the difference in elevation between A and 8? Answer: b. If the line of sight is not in adjustment, determine the correct rod reading an B with the instrument still set up at A. Answer:

Q: 9.85 Compute I, and I, for the shaded region. 1 m 6 m 1 m 1 y 3 m 6 m -1 m Fig. P9.85

A: Given,

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A: ans 3 :  MILKAN OIL DROP EXPERIMENT : Oil-drop experiment was the first direct and compelling…

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A:

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A:

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A:

Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.