Complete Question
The complete question is shown on the first uploaded image
Answer:
The distance which the car skid is
Explanation:
From the question we are told that
The initial velocity of the car is
The coefficient of kinetic friction is
According to the law of energy conservation
The initial Mechanical Energy = The final Mechanical Energy
The initial mechanical energy is mathematically represented as
where KE is the initial kinetic energy which is mathematically represented as
And PE is the initial potential energy which is zero given that the car is on the ground
Now
Where is the work which friction exerted on the car which is mathematically represented as
Where is the distance covered by the car before it slowed down
=>
Answer:
Speed of the sound in air is 325 m/s
Explanation:
As we know that the frequency of the sound is given as
wavelength of the sound is given as
now we have
so we have
Average speed = total distance / total time
total distance = 40 + 20 = 60km
total time taken = 10 + 5 = 15 minutes
Average speed = 60/15 = 4km/min
This is a balanced force because if the they are applying the same amount of force in opposite directions, the rope won't move any where
If the products contain 3 nitrogen atoms, then so did the reactants since overall mass is conserved in a chemical reaction.