two thermometers, calibrated in celsius and fahrenheit respectively, are put into a liquid. the reading on the fahrenheit scale
is four times the reading on the celsius scale. the temperature of the liquid is:
1 answer:
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Answer:
The angular velocity is
Explanation:
From the question we are told that
The mass of the child is
The radius of the merry go round is
The moment of inertia of the merry go round is
The angular velocity of the merry-go round is
The position of the child from the center of the merry-go-round is
According to the law of angular momentum conservation
The initial angular momentum = final angular momentum
So
=>
Now is the initial moment of inertia of the system which is mathematically represented as
Where is the initial moment of inertia of the boy which is mathematically evaluated as
substituting values
Thus
Thus
Now
Where is the final moment of inertia of the boy which is mathematically evaluated as
substituting values
Thus
Thus
Hence
Answer:
The right answer is "1.369 m/s²".
Explanation:
The given values are:
Distance (s)
= 260 m
Initial speed (u)
= 26 m/s
Reaction time (t')
= 0.51 s
During reaction time, the distance travelled by locomotive will be:
⇒
Remained distance between locomotive and car:
⇒
Now,
The final velocity to avoid collection is, V = 0 m/s
From third equation of motion:
⇒
On putting the estimated values, we get
⇒
⇒
⇒
⇒
⇒