Answer:
Step-by-step explanation:
Given
Required
Evaluate
We have:
Apply law of logarithm
Express 9 as 3^2
Evaluate the exponents
.
So:
Substitute
6/8, 3/4 hopes this helps
18.70
Because they are 1.10 each
Answer:
Factor by which kinetic energy increase = 4 times
Step-by-step explanation:
Given,
- Mass of the car, v1 = 1500 kg
- initial speed of car = 35 miles/h
= 15.64 m/s
Initial kinetic energy of the car is given by,
= 183606.46 J
- Final velocity of car v2 = 70 miles/hour
= 31.29 m/s
So, final kinetic energy of car is given by
= 734425.84 J
Now, the ratio of final to initial kinetic energy can be given by,
Hence, the kinetic energy will increase by 4 times.