Identify the method of thermal energy transfer at work in hot air balloons. Explain how thermal energy is transferred in this sc
2 answers:
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As per kinematics equation we are given that
now we are given that
a = 2.55 m/s^2
now we need to find x
from above equation we have
so it will cover a distance of 93.2 m
1.
Answer:
a) It is less
Explanation:
By energy conservation we can say that initial potential energy of both child must be equal to the final kinetic energy of the two child.
Since initially they are at same height so we will say that initial potential energy will be given as
and MgH
so the child with greater mass has more energy and hence smaller child will reach with smaller kinetic energy
2.
Answer:
b. The two speeds are equal.
Explanation:
As we know by mechanical energy conservation law we have
since both child starts at same height so here they both will reach the bottom at same speed
3.
Answer:
c. The two accelerations are equal
Explanation:
Since we know that average acceleration of the motion is given as
since here initial and final speeds are same so they both must have same average acceleration here.
Answer:
The maximum transverse speed of the bead is 0.4 m/s
Explanation:
As we know that the Amplitude of the travelling wave is
A = 3.65 mm
Now the speed of the travelling wave is
now we know that distance of first antinode from one end is 27.5 cm
so length of the loop of the standing wave is given as
now we have
now we have
now at x = 13.8 cm
now we have
now maximum speed is given as