Chapter 11: Q9P (page 292)
What, approximately, is the percent uncertainty for a measurement given as\({\bf{1}}{\bf{.57 }}{{\bf{m}}^{\bf{2}}}\)?
Short Answer
The correct answer of percent uncertainty is 0.6%.
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Chapter 11: Q9P (page 292)
What, approximately, is the percent uncertainty for a measurement given as\({\bf{1}}{\bf{.57 }}{{\bf{m}}^{\bf{2}}}\)?
The correct answer of percent uncertainty is 0.6%.
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(a) How many seconds are there in 1.00 year? (b) How many nanoseconds are there in 1.00 year? (c) How many years are there in 1.00 second?
Tall buildings are designed to sway in the wind. In a \({\bf{100}}\;{\bf{km/h}}\) wind, suppose the top of a 110-story building oscillates horizontally with an amplitude of \({\bf{15}}\;{\bf{cm}}\) at its natural frequency, which corresponds to a period of \({\bf{7}}{\bf{.0}}\;{\bf{s}}\). Assuming SHM, find the maximum horizontal velocity and acceleration experienced by an employee as she sits working at her desk located on the top floor. Compare the maximum acceleration (as a percentage) with the acceleration due to gravity.
Multiply \({\bf{3}}{\bf{.079 \times 1}}{{\bf{0}}^{\bf{2}}}{\bf{ m}}\) by \({\bf{0}}{\bf{.068 \times 1}}{{\bf{0}}^{{\bf{ - 1}}}}{\bf{ m}}\),taking into account significant figures.
A bungee jumper with mass 65.0 kg jumps from a high bridge. After arriving at his lowest point, he oscillates up and down, reaching a low point seven more times in 43.0 s. He finally comes to rest 25.0 m below the level of the bridge. Estimate the spring stiffness constant and the unstretched length of the bungee cord assuming SHM.
A sound wave is traveling in warm air when it hits a layer of cold, dense air. If the sound wave hits the cold air interface at an angle of\(25^\circ \), what is the angle of refraction? Assume that the cold air temperature is\( - 15^\circ {\rm{C}}\)and the warm air temperature is\( + 15^\circ {\rm{C}}\). The speed of sound as a function of temperature can be approximated by\(v = \left( {331 + 0.60T} \right)\;{\rm{m/s}}\)where\(T\)is in\(^\circ {\rm{C}}\).
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