3 is B my dude and the reason nobody answered is because thousands of questions are asked every day. So not every question can be answered. It doesn't have to do with being lazy.
It is true but that’s not Physics
Answer:
The heat of vaporization 580 cal/g times 602g = cal in human and do the same for life form.
Explanation:
It seems that you have missed the given options for the given statement above whether it is true or false. But anyway, the correct answer would be TRUE. It is true that one <span>of the most effective ways to evaluate data is to try to replicate it. Hope that this answer will help you. </span>
Answer:
![K_{2}=7302.4J](https://tex.z-dn.net/?f=K_%7B2%7D%3D7302.4J)
Explanation:
Given the initial velocity of the clown, his mass and final height we can calculate the final kinetic energy using the <em><u>conservation of total mechanical energy</u></em>
![K_{1}+U_{1}=K_{2}+U_{2}](https://tex.z-dn.net/?f=K_%7B1%7D%2BU_%7B1%7D%3DK_%7B2%7D%2BU_%7B2%7D)
![K_{2}=K_{1}+U_{1}-U_{2}](https://tex.z-dn.net/?f=K_%7B2%7D%3DK_%7B1%7D%2BU_%7B1%7D-U_%7B2%7D)
![K_{2}=\frac{1}{2}mv_{1}^{2}+mgh_{1}-mgh_{2}](https://tex.z-dn.net/?f=K_%7B2%7D%3D%5Cfrac%7B1%7D%7B2%7Dmv_%7B1%7D%5E%7B2%7D%2Bmgh_%7B1%7D-mgh_%7B2%7D)
Since ![h_{1}=0](https://tex.z-dn.net/?f=h_%7B1%7D%3D0)
![K_{2}=\frac{1}{2}mv_{1}^{2}-mgh_{2}](https://tex.z-dn.net/?f=K_%7B2%7D%3D%5Cfrac%7B1%7D%7B2%7Dmv_%7B1%7D%5E%7B2%7D-mgh_%7B2%7D)
![K_{2}=\frac{1}{2}(70kg)(17m/s)^2-(70kg)(9.8m/s^2)(4.1m)=7302.4J](https://tex.z-dn.net/?f=K_%7B2%7D%3D%5Cfrac%7B1%7D%7B2%7D%2870kg%29%2817m%2Fs%29%5E2-%2870kg%29%289.8m%2Fs%5E2%29%284.1m%29%3D7302.4J)
![K_{2}=7302.4J](https://tex.z-dn.net/?f=K_%7B2%7D%3D7302.4J)