Mass= density x volume
1.3 kg/m^3 x ( 2.5x4x10) m^3
= 130 kg
3.278*10^6 I think. Sorry if it’s wrong.
I think that the answer is friction
Answer:
mass =25 kg
using clockwise moment = anticlockwise moment
Answer:
D. 130 J
Explanation:
The coefficient of performance for a machine that is being used to cool, is given by:
Here 
is the heat removed from the cold reservoir, W is the work required, that is, the energy required to remove the heat from the interior of the house, 
is the cold temperature and 
is the hot temperature. Recall use absolutes temperatures(
). Replacing and solving for W:
