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itufizik

Questions (9)

An ice cube at 0°C measures 13.9 cm on a side. It sits on top of a copper block with a square cross section 13.9 cm on a side
1. 1 answer
2. 834 views
An air-cooled motorcycle engine loses a significant amount of heat through thermal radiation according to the Stefan-Boltzmann
1. 0 answers
2. 549 views
A highway of concrete slabs is to be built in the Libyan desert, where the highest air temperature recorded is 57.8 °C. The
1. 0 answers
2. 1,123 views
Steel rails for a train track are laid in a region subject to extremes of temperature. The distance from one juncture to the
1. 1 answer
2. 857 views
Two identical half-open pipes each have a fundamental frequency of 450 Hz. What percentage change in the length of one of the
1. 0 answers
2. 1,014 views
You are traveling in a car toward a hill at a speed of 42.1 mph. The car's horn emits sound waves of frequency 251 Hz, which
1. 0 answers
2. 513 views
You are driving along a highway at 27.7 m/s when you hear a siren. You look in the rear-view mirror and see a police car
1. 1 answer
2. 1,476 views
You are playing a note that has a fundamental frequency of 466.16 Hz on a guitar string of length 59.9 cm. At the same time,
1. 0 answers
2. 1,168 views
Two people are talking at a distance of 2.49 m from where you are, and you measure the sound intensity as 1.47 · 10–7 W/m2.
1. 0 answers
2. 417 views

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