Answer: 
Explanation:
Given
Power consumption of bulb and water are 
and 
If the Devices are on for four hours
Total power of devices 
Energy consumed for 4 hours is
For 30 days it is 
Cost for 30 days 
Because there’s no elemental degradation, the mass of the compound EQUALS the sum of the masses.
In physics<span>, a </span>force<span> is said to do </span>work if, when acting, there is a displacement of the point of application in the direction of the force. For example, when a ball is held above the ground and then dropped, the work done on the ball as it falls is equal to the weight of the ball (a force) multiplied by the distance to the ground (a displacement). so in the proble, <span>She does NO work since the force she applies to the case is vertical and the direction of motion is horizontal. Work is the force times the parallel distance</span>
A continuous spectrum contains all the wavelengths
A discontinuous spectrum has strips of specific colors and can be used to identify the elements making it.
hope this helps
