True lizards can stick to surfaces because their bulbous toes are covered in hundreds of tiny microscopic hairs called setae
I believe the answer would be B) ...... sorry if i'm wrong
Speed is given as distance divided by time. I think that first you should simplify the two rates 58/2=29km/hr and 71/4=17.75km/hr After that find the mean or average which is (29+17.75)/2=23.375km/hr
Therefore it is safe to say that the average speed of the train is 23.375km/hr. I am not sure about this.
Answer:
The balloons have the same charge,
If they had opposite charges they would cling to one another.
To solve this problem it is necessary to apply the Stefan-Boltzmann equations. This equation describes the power radiated from a black body in terms of its temperature. Mathematically this can be expressed as,

Where,
e= Emissivity
= Stefan Boltzmann constant
A = Surface Area
= Temperature at each state
Replacing our values we have,
![\frac{\Delta Q}{\Delta t} = (0.7)(5.67*10^{-8})(1.2)([273+80]}}^4-[273+20]^4)](https://tex.z-dn.net/?f=%5Cfrac%7B%5CDelta%20Q%7D%7B%5CDelta%20t%7D%20%3D%20%280.7%29%285.67%2A10%5E%7B-8%7D%29%281.2%29%28%5B273%2B80%5D%7D%7D%5E4-%5B273%2B20%5D%5E4%29)

Therefore the neat heat flow rate from the radiator is 431.3W