Answer:
1.34352 kg
Explanation:
= Mass of water falling = 1 kg
h = Height of fall = 0.1 km
= Change in temperature = 0.1
c = Specific heat of water = 4186 J/kg K
g = Acceleration due to gravity = 9.81 m/s²
= Mass of water in the vessel
Here the potential energy will balance the internal energy
![m_wgh=m_wc\Delta T+m_vc\Delta T\\\Rightarrow m_v=\dfrac{m_wgh-m_wc\Delta T}{c\Delta T}\\\Rightarrow m_v=\dfrac{m_wgh}{c\Delta T}-m_w\\\Rightarrow m_v=\dfrac{1\times 9.81\times 100}{4186\times 0.1}-1\\\Rightarrow m_v=1.34352\ kg](https://tex.z-dn.net/?f=m_wgh%3Dm_wc%5CDelta%20T%2Bm_vc%5CDelta%20T%5C%5C%5CRightarrow%20m_v%3D%5Cdfrac%7Bm_wgh-m_wc%5CDelta%20T%7D%7Bc%5CDelta%20T%7D%5C%5C%5CRightarrow%20m_v%3D%5Cdfrac%7Bm_wgh%7D%7Bc%5CDelta%20T%7D-m_w%5C%5C%5CRightarrow%20m_v%3D%5Cdfrac%7B1%5Ctimes%209.81%5Ctimes%20100%7D%7B4186%5Ctimes%200.1%7D-1%5C%5C%5CRightarrow%20m_v%3D1.34352%5C%20kg)
Mass of the water in the vessel is 1.34352 kg
sorry Idk the answer ..???
Answer:
a) -5.40 rad/s
b) -2.842 rad/s²
Explanation:
The direction is important in dealing with such questions. Clockwise is considered negative and counterclockwise is considered positive
a) Δω = final angular velocity - initial angular velocity
= -2.70 rad/s - 2.70 rad/s
= -5.40 rad/s
b) ∝ = Δω/Δt = (-5.40 rad/s)/1.90s = -2.842 rad/s²
The correct answer is B.Antartica and Australia were one landmass millions of years ago.
The answer to this question is b