When does water reach its lowest density?
1 answer:
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<em>Magnetite is a Natural magnet</em>
Explanation:
Given that,
Radius of circular path, r = 5 m
Centripetal acceleration,
(a) Let v is the astronaut’s speed. The formula for the centripetal acceleration is given by :
v = 18.5 m/s
(b) Let T denotes the time period. It is given by :
T = 1.69 s
Let N is the number of revolutions. So,
So, the number of revolutions per minute is 35.5
(c) T = 1.69 seconds
Hence, this is the required solution.
Answer:
the frequency heard by the observer is equal to 2677 Hz
Explanation:
given,
velocity of the observer = 17 m/s
speed of the sound = 343 m/s
velocity of the source = 0 m/s
frequency emitted from the source = 2550 Hz
velocity of observer is negative as it is approaching the source. f = 2676.38 Hz ≈ 2677 Hz
hence, the frequency heard by the observer is equal to 2677 Hz