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LA 10 kW drilling machine is used to drill a bore in a small aluminium block of mass S0 kg Assuming 50% of power is used up in heating the machine itself or lost to de surroundings Specific heat of auminum = 0.91 J g1°C-1 %3D al Energy obtained from machine in 2.5 minutes is 15 x 10 J H Energy transferred to the aluminium block si 7.5 x 10 J a The rises in temperature of the block in 2.5 minutes is 103. 2°C a The rises in temperature of the block in 2.5 minutes is 93.2°C lumes in the same

LA 10 kW drilling machine is used to drill a bore in a small aluminium block of mass S0 kg Assuming 50% of power is used up in heating the machine itself or lost to de surroundings Specific heat of auminum = 0.91 J g1°C-1 %3D al Energy obtained from machine in 2.5 minutes is 15 x 10 J H Energy transferred to the aluminium block si 7.5 x 10 J a The rises in temperature of the block in 2.5 minutes is 103. 2°C a The rises in temperature of the block in 2.5 minutes is 93.2°C lumes in the same

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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LA 10 KW drilling machine is used to drill a bore in a small aluminium block of mass vlti Correct Choice Type Questions 80 ke Assuming 50% of power is used up in heating the machine itself or lost to de surroundings Specific heat of aluminum - 0.91 Jg1°C-1 a) Energy obtained from machine in 2.5 minutes is 15 x 10 J H Energy transferred to the aluminium block si 7.5 x 10° J a The rises in temperature of the block in 2.5 minutes is 103. 2°C a The rises in temperature of the block in 2.5 minutes is 93.2°C 53. Two substances A and B have their densities specific heats and volumes in the same ratio of 2:3. Find the ratio of their thermal capacities 8. c): 27 d) 20 27 18 b) ) 18 20 Choice Type: 2)
Transcribed Image Text:LA 10 KW drilling machine is used to drill a bore in a small aluminium block of mass vlti Correct Choice Type Questions 80 ke Assuming 50% of power is used up in heating the machine itself or lost to de surroundings Specific heat of aluminum - 0.91 Jg1°C-1 a) Energy obtained from machine in 2.5 minutes is 15 x 10 J H Energy transferred to the aluminium block si 7.5 x 10° J a The rises in temperature of the block in 2.5 minutes is 103. 2°C a The rises in temperature of the block in 2.5 minutes is 93.2°C 53. Two substances A and B have their densities specific heats and volumes in the same ratio of 2:3. Find the ratio of their thermal capacities 8. c): 27 d) 20 27 18 b) ) 18 20 Choice Type: 2)
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