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The rate at which solar energy is received by every square metre of area directly facing the sun is 1400 W. A rectangular solar heater of side 2m by 2.5m working at 50% efficiency utilizes this energy to heat water filled completely in a cubical containers of side 1 m. What is the time required (in seconds) to raise the temperature of water by 1 degree Celsius. The heat capacity of the container assumed to be negligible and assume the sun to be directly overhead on the container.
Thanks  | 
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| asked by Prateek Mukherjee (prat172) 7 years ago  | 
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 + 1 more questions by prat172    
Can anyone please help me with this-
A rocket starts from rest in upward direction with vertical acceleration of 50 m/s^2. If a stone departs from rocket at t=3sec. What is the velocity with which it hits the ground?  | 
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| asked by Prateek Mukherjee (prat172) 7 years ago  |  
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Last day...  | 
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| asked by Darth Vader (aj87) 7 years ago  | 
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 + 7 more questions by aj87    
2 days for infinity war...  | 
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| asked by Darth Vader (aj87) 7 years ago  |  
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| asked by Darth Vader (aj87) 7 years ago  |  
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| asked by Darth Vader (aj87) 7 years ago  |  
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| asked by Darth Vader (aj87) 7 years ago  |  
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8 days for infinity war...  | 
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| asked by Darth Vader (aj87) 7 years ago  |  
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Can You all give 2 reasons as to why the Thar is a desert area??  | 
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| asked by Saeng (kimjennie) 7 years ago  |  
3  |   + 1 more questions by kimjennie    
How can i get 'solved'1996 10th ICSE geography paper??i tried a lot pls help me.....  | 
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| asked by Saeng (kimjennie) 7 years ago  |  
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8 days for Burning Maze.  | 
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| asked by Aditi Prasad (pp201540) 7 years ago  |  
1  |   + 2 more questions by pp201540    
9 days for Burning Maze.  | 
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| asked by Aditi Prasad (pp201540) 7 years ago  |  
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10 days for Burning Maze.  | 
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| asked by Aditi Prasad (pp201540) 7 years ago  |  
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Heyy! I made a tribute to Avicii! Hope you like it.  Please do like and subscribe.    https://youtu.be/YH9HxdS-LEM
Had nothing to do after boards xD Hope you support me :v Plus i'll release my own music too. XD  | 
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| asked by Subodh Kakade (subodhkakxde19) 7 years ago  |  
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Guys! Its 21 April. What are the chances that ICSE Board may declare the results this month?  | 
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| asked by Ragini Jain (adityajain1234) 7 years ago  |  
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is there any issue in history if in every question there are more number of points than that mentioned in the question paper to write??  | 
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| asked by Ashutosh Dash (ashutosh_dash) 7 years ago  |  
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Why alkanes are insoluble in water??  | 
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| asked by Vindhya Badal (_itsme_) 7 years ago  |  
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Hi frndzz,
How is TIME ??  | 
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| asked by Snigdha (silver2002) 7 years ago  |  
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Which workbook is best for echoes and reverie:evergreen,beeta or Oxford publication?
Anyone leaving isc and turning to cbse board this year?How do u think it'll benefit u??  | 
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| asked by Fire Bird (firebird) 7 years ago  |  
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