Efficiency = useful energy out / total energy in x 100
= 100/400 x 100
=0.25 x 100
= 25%
25%
Answer:
The acceleration of the car will be 
Explanation:
We have given that distance from stop sign s = 200 m
Time t = 0.2 sec
We have to find the constant acceleration
Now from second equation of motion 


So the acceleration of the car will be 
Answer:after -44 degrees it turns into liquid and when it becomes vapor when it gets warmer
Explanation:
Answer Part A: radiation
Part B: conduction
Part C: conduction
Part D: conduction
Part E: conduction
Part F: radiation
Part G::radiation
Part H : convection
Explanation:conduction is heat transfer through direct contact
Convection is through molecules or particles of water or air current
Radiation is heat transfer through empty space .