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Chapter 1: Problem 42
You step on your brand-new digital bathroom scale, and it reads 125.4 pounds. What is your mass in kilograms?
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A position vector has a length of \(40.0 \mathrm{~m}\) and is at an angle of \(57.0^{\circ}\) above the \(x\) -axis. Find the vector's components.
If the radius of a planet is larger than that of Earth by a factor of 5.8 , how much bigger is the volume of the planet than Earth's?
1.6 A hockey puck, whose diameter is approximately 3 inches, is to be used to determine the value of \(\pi\) to three significant figures by carefully measuring its diameter and its circumference. For this calculation to be done properly, the measurements must be made to the nearest _____________. a) hundredth of a \(\mathrm{mm}\) c) \(\mathrm{mm}\) e) in b) tenth of a \(\mathrm{mm}\) d) \(\mathrm{cm}\)
The distance a freely falling object drops, starting from rest, is proportional to the square of the time it has been falling. By what factor will the distance fallen change if the time of falling is three times as long?
If you draw a vector on a sheet of paper, how many components are required to describe it? How many components does a vector in real space have? How many components would a vector have in a four-dimensional world?
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