The electrical energy consumed by a toaster is 0.033 Kwh.
<u>Explanation</u>:
The power utilized by the toaster is 400 W.

The toaster is operated for 5 Minutes.

We know that,

Substitute the values in the above formula to obtain electrical energy,

Electrical energy = 0.4 × 0.083
Electrical energy is 0.033 Kwh.
 
        
             
        
        
        
Answer:
0.000153DaL  
Explanation:
We have been given: 
          15.3mL to convert to DaL 
DaL is a unit of volume which indicates a decaliter. 
  This implies that; 
              1 Da L  = 1 x 10²L 
So: 
                1 mL  = 1 x 10⁻³L 
        So 15.3mL will give 15.3 x 10⁻³L 
So; 
            1 x 10²L   =  1 DaL  
       15.3 x 10⁻³L  will give  = 15.3 x 10⁻⁵DaL
   = 15.3 x 10⁻⁵DaL 
Therefore, this is 0.000153DaL  
            
 
        
             
        
        
        
Answer:
Yes, the heat that flows into the system is used to change the internal energy of the gas and becomes work done by the piston. 
Explanation:
First law of thermodynamics known as Law of Conservation of Energy, states that energy can neither be created nor destroyed; energy can only be transferred or changed from one form to another.
The first law of thermodynamics states that the change in internal energy of a system equals the net heat transfer into the system minus the net work done by the system. In equation form, the first law of thermodynamics.
This is the first law of thermodynamics 
ΔE= Q− W 
ΔE= change internal energy of the system.
Q= heat transfer into the system 
And 
W= work done by the system.
Rewriting the equation 
ΔE= Q− W 
Q=ΔE +W 
Show that the heat flowing l into the system is transferred to the internal energy of the system and the work done by the piston 
So the third option is correct
 
        
             
        
        
        
Answer:
54%
Explanation:
We are given that 
S.D=4.2 lb
Mean=
We have to find the percentage of household throw out at least 9 lb of paper  a week.
Normal distribution formula :

We have a=9


 %
%
Hence, the  percentage of household throw out at least of paper a week=54%
 
        
             
        
        
        
Answer:
true
Explanation:
they have a reflecting surface that is recessed inward