COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 6, Problem 27QAP
To determine
The energy required to lift a suitcase into the trunk of a car
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Ex 12 : Calculate the work done in blowing a
soap bubble of radius 0.5 cm. Surface tension
of soap solution is 2.5 x 10-³ N/m.
A soap bubble of radius 12 cm is blown.
Surface tension of soap solution is 30 dyne/cm.
calculate the work done is blowing the soap
bubble.
A bucket begins holding 15 kgs of sand. The bucket is to be lifted to the top of a 20 meter tall building by a
rope with density 0.1 kg/m. However, the bucket has a hole in it, and leaks 0.1 kgs of sand each meter it is
lifted.
Find the work done lifting the bucket and rope to the top of the building. Use 9.8 m/s- for gravity.
Chapter 6 Solutions
COLLEGE PHYSICS
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- The human heart is a powerful organ. If your heart can take in and discharge about 6773.2 liters of blood per day, what is your heart’s daily output in watts? Assume that the work done by your heart is the work needed to lift all blood to 1.7meters. The density of blood is 1.06 kg/L. (round off into 4 decimal places, use 9.81m/s squared for accelerationarrow_forwardFive equal books weighing 0.85 kg and 2.50 cm thick each lie on a table. Calculate the potential energy gain of the system, if they are placed one on top of the other.arrow_forwardA trough is 2 meters long, 2 meters wide, and 4 meters deep. The vertical cross-section of the trough parallel to an end is shaped like an isoceles triangle (with height 4 meters, and base, on top, of length 2 kg meters). The trough is full of water (density 1000- ). Find the amount of work in joules required to m³ m 9.8- as the acceleration due to 8² empty the trough by pumping the water over the top. (Note: Use g = gravity.) Joulesarrow_forward
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Mechanical work done (GCSE Physics); Author: Dr de Bruin's Classroom;https://www.youtube.com/watch?v=OapgRhYDMvw;License: Standard YouTube License, CC-BY