Answer:
![\Delta U_g=-588J](https://tex.z-dn.net/?f=%5CDelta%20U_g%3D-588J)
Explanation:
The change of gravitational potential energy is given by:
![\Delta U_g=U_{gf}-U_{go}](https://tex.z-dn.net/?f=%5CDelta%20U_g%3DU_%7Bgf%7D-U_%7Bgo%7D)
![\Delta U_g=m.g.h_f-m.g.h_i\\Fc=21N=m.g\\\Delta U_g=21N*(0)-21N*(28m)\\\Delta U_g=-588J](https://tex.z-dn.net/?f=%5CDelta%20U_g%3Dm.g.h_f-m.g.h_i%5C%5CFc%3D21N%3Dm.g%5C%5C%5CDelta%20U_g%3D21N%2A%280%29-21N%2A%2828m%29%5C%5C%5CDelta%20U_g%3D-588J)
The preceding result is negative because the camera was on a higher point from where it ended.
Answer:
c, removing the adenine base from Atp
Answer:
![\boxed {\tt 3.6 \ seconds}](https://tex.z-dn.net/?f=%5Cboxed%20%7B%5Ctt%203.6%20%5C%20seconds%7D)
Explanation:
Time can be found by dividing the distance by the speed.
![t=\frac{d}{s}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7Bd%7D%7Bs%7D)
The distance is 45 meters and the speed is 12.5 meters per second.
![d= 45 \ m \\s= 12.5 \ m/s](https://tex.z-dn.net/?f=d%3D%2045%20%5C%20m%20%5C%5Cs%3D%2012.5%20%5C%20m%2Fs)
![t=\frac{45 \ m}{12.5 \ m/s}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B45%20%5C%20m%7D%7B12.5%20%5C%20m%2Fs%7D)
Divide. Note that the meters, or "m" will cancel each other out.
![t=\frac{45 }{12.5 \ s}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B45%20%7D%7B12.5%20%5C%20s%7D)
![t=3.6 \ s](https://tex.z-dn.net/?f=t%3D3.6%20%5C%20s)
It will take the dolphin 3.6 seconds to swim a distance of 45 meters are 12.5 meters per second.
Answer:
841.5 Hz
Explanation:
Given
y = 50 cm = 0.5 m
d = 5.00 m
L = 12.0 m away from the wall
v = speed of sound = 343 m/s
The image of the scenario is presented in the attached image.
When destructive interference is being experienced from 50 cm (0.5 m) parallel to the wall, the path difference between the distance of the two speakers from the observer is equal to half of the wavelength of the wave.
Let the distance from speaker one to the observer's new position be d₁
And the distance from the speaker two to the observer's new position be d₂
(λ/2) = |d₁ - d₂|
d₁ = √(12² + 3²) = 12.3693 m
d₂ = √(12² + 2²) = 12.1655 m
|d₁ - d₂| = 0.2038 m
(λ/2) = |d₁ - d₂| = 0.2038
λ = 0.4076 m
For waves, the velocity (v), frequency (f) and wavelength (λ) are related thus
v = fλ
f = (v/λ) = (343/0.4076) = 841.5 Hz
Hope this Helps!!!
The answer is B, or endoplasmic reticulum.