the engine won't start or it sputters when it should be running perfectly. if the gasoline is old and stale, it will have lost a portion of its volatility. the lighter components of the gasoline (remember, gasoline is a mixture of different hydrocarbons) have probably evaporated off or disappeared.
Answer:
The moment of inertia of the wood sphere is greater than that of
the one made of lead.
Explanation:
Explanation:
The current flow of electrons for all of the light bulbs would be interrupted. It is similar or 'breaking' a circuit.
Answer:
3.75 m/s
Explanation:
Comment
Let's deal with the second question first. The average velocity is 0 because the displacement (distance between the starting point and ending point) is 0.
The first question is a little harder. You don't seem to have enough information. When that happens, you can just make things up. Now there's an interesting solution. You could do it with algebra, but it is easier to see with numbers.
Givens
- d = 150 m. between A and B
- r1 = rate from A to B = 5 m/s
- r2 = rate from B to A = 3 m/s
- time A to B = t1
- time B to A = t2
Formulas
t1 = d / r1
t2 = d/r2
average rate = total distance / total time
Solution
t1 = 150 m / 5 m/s = 30 seconds
t2 = 150 m / 3 m/s = 50 seconds
Total distance = 150 m + 150 m = 300 m
Total time = 30 seconds + 50 seconds = 80 seconds
Average speed = 300 m / 80 s
Answer
Average speed = 3.75 m/s
Answer:
Part a)
Part b)
Part c)
F = 2.7 N
Explanation:
Part a)
As we know that the rotational kinetic energy of the merry go round is given as
here we know that
Now we have
Part b)
Now we know that work done due to torque = change in kinetic energy
Part c)
In order to stop it in four revolutions we have
F = 2.7 N
