All of them have the same potential energy <span />
Answer:
40sec
Explanation:
Data
Work = 440 J
Power= 11watt
time = ?
Power = work done/time
===> time = work done/power
= 440/11
= 40sec
Answer:
1317.4 m
Explanation:
We are given that
Angle=![\alpha=40.8^{\circ}](https://tex.z-dn.net/?f=%5Calpha%3D40.8%5E%7B%5Ccirc%7D)
Initial speed =![v_0=346m/s](https://tex.z-dn.net/?f=v_0%3D346m%2Fs)
We have to find the horizontal distance covered by the shell after 5.03 s.
Horizontal component of initial speed=![v_{ox}=v_0cos\theta=346cos40.8=261.9m/s](https://tex.z-dn.net/?f=v_%7Box%7D%3Dv_0cos%5Ctheta%3D346cos40.8%3D261.9m%2Fs)
Vertical component of initial speed=![v_{oy}=346sin40.8=226.1m/s](https://tex.z-dn.net/?f=v_%7Boy%7D%3D346sin40.8%3D226.1m%2Fs)
Time=t=5.03 s
Horizontal distance =![Horizontal\;velocity\times time](https://tex.z-dn.net/?f=Horizontal%5C%3Bvelocity%5Ctimes%20time)
Using the formula
Horizontal distance=![261.9\times 5.03](https://tex.z-dn.net/?f=261.9%5Ctimes%205.03)
Horizontal distance=1317.4 m
Hence, the horizontal distance covered by the shell=1317.4 m
For the first question it is the fourth option. Cryosphere is a term for the portions of earth that are covered in water when the water is in solid form. this includes both snow and ice.
For the second question the answer is a delta is formed at the mouth of the river a sediment is carried down stream. The hydrosphere refers to all water on earth.