PHYSICS

posted by .

Q1=
An 85 cu.meter room.
- How much energy required to heat room temperature from 5C to 22C.

- How long in minutes

Q2=

- a 40 Liter radiator in the same room above. energy input is 5400 watts. In order to increase room temperature from 5C to 22C, how long 5400 Watts will be supplied to radiator and what water temperature is required in radiator to maintain 22C in the room?
Thank you

  • PHYSICS -

    Q1: It depends upon the heater power level. You should have been provided that infomation.

    Q2 depends upon heat loss rate out of the room. I don't know how to answer this with the information provided.

    This may help, but it looks rather complicated:

    http://www.engineeringtoolbox.com/heat-emission-radiators-d_272.html

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chem!??!?!?!?

    Is it possible for a cup of water to completely evaporate in a room with a constant temperature of 21ºC?
  2. Physics - Fluids

    A freezer contains 20 kg of food with a specific heat of 2 x 10^3 J/kgC. The freezer motor then operates for 10 minutes reducing the temperature to -8 degrees Celsius. a) How much heat is removed from the food during this time?
  3. Physics

    During a particular thunderstorm, the elctric potential difference between the clouds and the groud is Vcloud-Vgroud = 10^9 volts with the cloud being at the higher potential. Now, there is a lightning flash in which a charge of -25C …
  4. Physics

    60) A class of 10 students taking an exam has a power output per student of about 200W. Assume the initial temperature of the room is 20 C and that its dimensions are 6.0 m by 15.0 m by 3.0 m. What is the temperature of the room at …
  5. Physics

    Assume the optimal coffee drinking temperature is 75°C, and further assume coffee has the same heat capacity and density as water. a. How much energy is required to raise the temperature of 1 cup (0.237 liters) of coffee initially …
  6. Physics

    A class of 11 students taking an exam has a power output per student of 124 W. Assume that the initial temperature of the room is 18.7°C and that its dimensions are 6.00 m by 14.5 m by 3.40 m. What is the temperature (in °C, do not …
  7. physics

    A class of 11 students taking an exam has a power output per student of 122 W. Assume that the initial temperature of the room is 18.8oC and that its dimensions are 6.40 m by 14.5 m by 3.50 m. What is the temperature of the room at …
  8. history

    -the plan of Tutankhamun's tomb when Howard Carter found it- When did Carter go into the different rooms?
  9. PHYSICS

    Consider a classroom 10.0m long by 6.0m wide by 4.0m high at "room temperature" 20.C and 1.0 atmosphere. A) How many moles of gas are contained in the room?
  10. math

    trey can clean a room in 40 minutes. his brother Marcus can clean the same room in 20 minutes. how long will it take them to clean the room if they work together?

More Similar Questions