Uhhh, that looks like a game. I don't know how to tell u the answers for that thing -_-
Answer:
Extinction event or sometimes known as Mass extinction
Explanation:
These events typically are typically widespread and rapid decrease in the biodiversity (which takes into account spread and existence of current species). The worst mass extinction was Permian–Triassic extinction where over 90% of species of organisms vanished.
Answer:
<h3>25.0 grams is the mass of the steel bar.</h3>
Explanation:
Heat gained by steel bar will be equal to heat lost by the water
![Q_1=-Q_2](https://tex.z-dn.net/?f=Q_1%3D-Q_2)
Mass of steel=
Specific heat capacity of steel =
Initial temperature of the steel = ![T_1=2.00^oC](https://tex.z-dn.net/?f=T_1%3D2.00%5EoC)
Final temperature of the steel = ![T_2=T=21.50^oC](https://tex.z-dn.net/?f=T_2%3DT%3D21.50%5EoC)
![Q_1=m_1c_1\times (T-T_1)](https://tex.z-dn.net/?f=Q_1%3Dm_1c_1%5Ctimes%20%28T-T_1%29)
Mass of water= ![m_2= 105 g](https://tex.z-dn.net/?f=m_2%3D%20105%20g)
Specific heat capacity of water=![c_2=4.18 J/g^oC](https://tex.z-dn.net/?f=c_2%3D4.18%20J%2Fg%5EoC)
Initial temperature of the water = ![T_3=22.00^oC](https://tex.z-dn.net/?f=T_3%3D22.00%5EoC)
Final temperature of water = ![T_2=T=21.50^oC](https://tex.z-dn.net/?f=T_2%3DT%3D21.50%5EoC)
![Q_2=m_2c_2\times (T-T_3)-Q_1=Q_2(m_1c_1\times (T-T_1))=-(m_2c_2\times (T-T_3))](https://tex.z-dn.net/?f=Q_2%3Dm_2c_2%5Ctimes%20%28T-T_3%29-Q_1%3DQ_2%28m_1c_1%5Ctimes%20%28T-T_1%29%29%3D-%28m_2c_2%5Ctimes%20%28T-T_3%29%29)
On substituting all values:
![(m_1\times 0.452 J/g^oC\times (21.50^o-2.00^oC))=-(105 g\times 4.18 J/g^oC\times (21.50^o-22.00^o))\\\\m_1*8.7914=241.395\\\\m_1=\frac{219.45}{8.7914} \\\\m_1=24.9\\\\ \approx25 \texttt {grams}](https://tex.z-dn.net/?f=%28m_1%5Ctimes%200.452%20J%2Fg%5EoC%5Ctimes%20%2821.50%5Eo-2.00%5EoC%29%29%3D-%28105%20g%5Ctimes%204.18%20J%2Fg%5EoC%5Ctimes%20%2821.50%5Eo-22.00%5Eo%29%29%5C%5C%5C%5Cm_1%2A8.7914%3D241.395%5C%5C%5C%5Cm_1%3D%5Cfrac%7B219.45%7D%7B8.7914%7D%20%5C%5C%5C%5Cm_1%3D24.9%5C%5C%5C%5C%20%5Capprox25%20%5Ctexttt%20%7Bgrams%7D)
<h3>25.0 grams is the mass of the steel bar.</h3>
Answer:
speed=5cm/minute
Explanation:
Given at 2:00PM the hermit is at 10cm mark
Also given that the hermit reaches 60cm mark at 2:10PM
Therefore the time elapsed is 10 minutes = ![10\times 60=600 seconds](https://tex.z-dn.net/?f=10%5Ctimes%2060%3D600%20seconds)
the distance travelled by the hermit is 60-10=50cm=0.5m
We know that
![speed=\frac{distane}{time}](https://tex.z-dn.net/?f=speed%3D%5Cfrac%7Bdistane%7D%7Btime%7D)
![speed=\frac{0.5}{600}](https://tex.z-dn.net/?f=speed%3D%5Cfrac%7B0.5%7D%7B600%7D)
speed =
m/sec=5cm/minute
Answer:
just use the tongs and put it on a plate
Explanation: