What is the net force?
Answers
Answer:
The net force on an object is the combined effect (the sum) of all the pushing and pulling forces actually acting on the object. If the forces pushing or pulling on an object are not balanced (a net force acts) then the object will accelerate in the direction of the net force.
Explanation:
Answer:
Step 1
Step 1Let us call the two blocks as block1 and block2. (Refer to Figure1)
Step 1Let us call the two blocks as block1 and block2. (Refer to Figure1)Mass of each block (m)= 20kg.
Step 1Let us call the two blocks as block1 and block2. (Refer to Figure1)Mass of each block (m)= 20kg.Specific heat of each block (c)=0.4 kJ/kg.
Step 1Let us call the two blocks as block1 and block2. (Refer to Figure1)Mass of each block (m)= 20kg.Specific heat of each block (c)=0.4 kJ/kg.Initial temperature of both the blocks is same (Ti)= 500C=323K.
Step 1Let us call the two blocks as block1 and block2. (Refer to Figure1)Mass of each block (m)= 20kg.Specific heat of each block (c)=0.4 kJ/kg.Initial temperature of both the blocks is same (Ti)= 500C=323K.Final Temperature of block1=Tf1.
Step 1Let us call the two blocks as block1 and block2. (Refer to Figure1)Mass of each block (m)= 20kg.Specific heat of each block (c)=0.4 kJ/kg.Initial temperature of both the blocks is same (Ti)= 500C=323K.Final Temperature of block1=Tf1.Final Temperature of block2=Tf2.
Step 1Let us call the two blocks as block1 and block2. (Refer to Figure1)Mass of each block (m)= 20kg.Specific heat of each block (c)=0.4 kJ/kg.Initial temperature of both the blocks is same (Ti)= 500C=323K.Final Temperature of block1=Tf1.Final Temperature of block2=Tf2.Since heat is absorbed from block2 and rejected to block1 ,Tf1 > Tf2 and it is given that Tf1 - Tf2 = 150.
Step 2
Step 2Since the refrigerator is reversible refrigerator all the processes involved are reversible processes.
Step 2Since the refrigerator is reversible refrigerator all the processes involved are reversible processes.According to Principle of entropy, for reversible processes change in entropy of the Universe is zero.
Step 3
Step 3Calculate change in entropy of body1 and body2 ...