Josie sees lightning off in the distance. A few seconds later she hears thunder. What can Josie conclude?
2 answers:
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Answer
given,
mass of the ball = 3 kg
swing in vertical circle with radius = 2 m
work done by the gravity = ?
work done by the tension = ?
Work done by the gravity = - m g Δh
Δ h = 2 + 2 = 4 m
Work done by the gravity =
= -117.6 J
work done by gravity is equal to -117.6 J
Work done by tension will be equal to zero.
Zero because tension is always perpendicular to velocity
work done by tension is equal to 0 J
Answer:
Explanation:
Given
Volume of bucket
Time taken to fill the bucket
so volume flow rate is
1 gal is equivalent to
mass flow rate
(b)Average velocity through nozzle exit