The average distance between earth and the sun is 2.5 x 10^11m. (a) Calculate the average speed of earth in its orbit ( assume to be circular ) in meters per second. (b) what is this speed in miles per hour?

The average distance between earth and the sun is 2.5 x 10^11m. (a) Calculate the average speed of earth in its orbit ( assume to be circular ) in meters per second. (b) what is this speed in miles per hour?

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter8: Time And Time-related Variables In Engineering

Section: Chapter Questions

Problem 15P

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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.

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