I would assume air resistance is negligible and so the acceleration of the package would be approximately 9.81 m/s².
Taking downwards as positive, use v²=u²+2as.
v²=(-2)²+2(9.81)(14)
v=16.7 m/s
"<span>An atom is the smallest unit of matter and an element is a pure substance that is made of identical atoms" is correct. Although atoms can be broken down further now, it still take a whole atom to make an element. </span>
Answer:
Range of wavelength will be to
Explanation:
We have given range of frequency is 400-560 Hz
Speed of the light
We have to find the range of the wavelength of signal transmitted
Ween know that velocity is given by , here is wavelength and f is frequency
So for 400 Hz frequency wavelength will be
And wavelength for frequency 560 Hz
So range of wavelength will be to
Clock wise idk i think you should double check my answer