Questions asked by Jobin

• Back to user's profile
• An electric kettle rated 2.1 kilowatt contains 1 kg of water.Assuming no heat loss and neglecting the thermal capacities of kettle,how long will it take to start to boil the water if its initial temp is 20C?
  
• What is the amount of heat in calories required to convert 5 gram of ice at 0 degree Celsius to steam at hundred degree Celsius?
  
• Can you explain in detail why the answer is D ?
  
• A body of mass 16 kg accelerates vertically down with a force of 8 N. What is the minimum force required to make it move upward with the same acceleration? [Take #"g = 10 m/s"^2#].