The velocity of a plane that travels 450.0 km due north in 3.500 hours is
2 answers:
Answer : The velocity of a plane that travels 450.0 km due north in 3.500 hours is, 35.71 m/s
Solution : Given,
Distance = 450 km = 450000 meter (1 km = 1000 m)
Time = 3.5 hours = 12600 second (1 hr = 3600 s)
Velocity : It is defined as the displacement divided by the time. It is vector quantity. That means both magnitude and the direction are needed to define the velocity. The S.I unit of velocity is meter per second (m/s).
Formula used :
Now put all the given values in this formula, we get
Therefore, the velocity of a plane that travels 450.0 km due north in 3.500 hours is, 35.71 m/s
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Answer:
1) Mass that needs to be converted at 100% efficiency is 0.3504 kg
2) Mass that needs to be converted at 30% efficiency is 1.168 kg
Explanation:
By the principle of mass energy equivalence we have
where,
'E' is the energy produced
'm' is the mass consumed
'c' is the velocity of light in free space
Now the energy produced by the reactor in 1 year equals
Thus the mass that is covertred at 100% efficiency is
Part 2)
At 30% efficiency the mass converted equals
Answer:
i) No, the spring scale does not read a different value
ii) The torque will read a different value, it will reduce
iii) The spring scale does not need to be measured at the center of mass location.
Explanation:
The torque caused by the gyroscope can be given by the relation,
r × f
The torque measured by the gyroscope varies directly with the distance, r.
A decrease in the distance r will also cause a decrease in the value of the torque measured. When the distance, r is reduced from 7.5 inches to 5 inches, the torque caused by the gyroscope's weight also reduces.
The weight of the gyroscope remains constant despite the reduction in the distance because the weight of the gyroscope is not a function of the distance from the gyroscope. Therefore, the spring scale will not read a different value.
Yes, the spring scale does not need to be measured from the center of mass location because the weight does not depend on the location of measurement. The reading of the sprig scale remains constant.