On Earth, gravity adds 9.8 m/s to the speed of a falling object every second.
If the coin and the balcony are both on Earth, and if the falling coin
is not influenced by air resistance, then after 2.7 seconds, its speed
has increased by
(2.7 x 9.8 m/s) = 26.46 m/s .
Its final velocity is 26.46 m/s downward.
True. yes the core muscles stabilize and protect the spine.
Answer:
fundamental frequency= 20Hz
length= 4.3m
Explanation:
resonating frequencies = 60 Hz,100 Hz,140 Hz
speed of sound =344 m/s
as well behaves as organ pipe with are end closed
only odd harmonics are allowed
, so the vibration will corresponds to n=1,3,5,7....
(2n−1) λ
/4 = l (∵λ
= V/f)
(2n-1) V / 4f = l
(2m-1)/6= (2n-1)/10= (2p-1)/14 =A
The given frequencies happen to be 3rd,5th & 7th harmonics of the fundamental frequency n=20Hz.
Therefore, The fundamental frequency will be 20 Hz because 60 Hz is corresponding 3rd harmonic
In order to find length,
(2n-1) V / 4f = l
= 4.3m
therefore, the well is 4.3m deep
Answer:
<h3>The answer is 2.67 g/mL</h3>
Explanation:
The density of a substance can be found by using the formula
From the question
mass of iron = 8 g
volume = final volume of water - initial volume of water
volume = 49 - 46 = 3 mL
We have
We have the final answer as
<h3>2.67 g/mL</h3>
Hope this helps you