Answer:
Because there is not as much cold as it was in France.
Explanation:
The average temperature in France during January ranges from 2.7° to 7.2° celsius which makes it the coldest month of the year. But since she comes to know that average temperature in Annville ranges 31° celsius which implies that the temperature is normal there and therefore, she packs sleeveless tops and shorts. Coats would not be required in a hot weather and hence, she does not pack it.
300/8 = 37.5
37.5 x 12 = 450
New temp. = 450 K
Hope this helps!
Answer:
a) ![s \approx 6.676\,m](https://tex.z-dn.net/?f=s%20%5Capprox%206.676%5C%2Cm)
Explanation:
a) Let assume that the ground is not inclined, since the bottom of the playground slide is tangent to ground. Then, the length of given by the definition of a circular arc:
![s = \frac{\pi}{4}\cdot R](https://tex.z-dn.net/?f=s%20%3D%20%5Cfrac%7B%5Cpi%7D%7B4%7D%5Ccdot%20R)
![s=\frac{\pi}{4}\cdot (8.5\,m)](https://tex.z-dn.net/?f=s%3D%5Cfrac%7B%5Cpi%7D%7B4%7D%5Ccdot%20%288.5%5C%2Cm%29)
![s \approx 6.676\,m](https://tex.z-dn.net/?f=s%20%5Capprox%206.676%5C%2Cm)
The bottom of the slide has a height of zero. The physical phenomenon around Dr. Ritchey's daughter is modelled after Principle of Energy Conservation. The child begins at rest:
![U_{g,A} = K_{B} + W_{fr}](https://tex.z-dn.net/?f=U_%7Bg%2CA%7D%20%3D%20K_%7BB%7D%20%2B%20W_%7Bfr%7D)
![m\cdot g \cdot h_{A} = \frac{1}{2}\cdot m \cdot v_{B}^{2} + f\cdot s](https://tex.z-dn.net/?f=m%5Ccdot%20g%20%5Ccdot%20h_%7BA%7D%20%3D%20%5Cfrac%7B1%7D%7B2%7D%5Ccdot%20m%20%5Ccdot%20v_%7BB%7D%5E%7B2%7D%20%2B%20f%5Ccdot%20s)
The average frictional force is cleared within the expression:
![f = \frac{m\cdot (g\cdot h_{A}-\frac{1}{2}\cdot v_{B}^{2})}{s}](https://tex.z-dn.net/?f=f%20%3D%20%5Cfrac%7Bm%5Ccdot%20%28g%5Ccdot%20h_%7BA%7D-%5Cfrac%7B1%7D%7B2%7D%5Ccdot%20v_%7BB%7D%5E%7B2%7D%29%7D%7Bs%7D)
![f = \frac{(12\,kg)\cdot [(9.807\,\frac{m}{s^{2}} )\cdot (3\,m)-\frac{1}{2}\cdot (4.5\,\frac{m}{s} )^{2} ]}{6.676\,m}](https://tex.z-dn.net/?f=f%20%3D%20%5Cfrac%7B%2812%5C%2Ckg%29%5Ccdot%20%5B%289.807%5C%2C%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%7D%20%29%5Ccdot%20%283%5C%2Cm%29-%5Cfrac%7B1%7D%7B2%7D%5Ccdot%20%284.5%5C%2C%5Cfrac%7Bm%7D%7Bs%7D%20%29%5E%7B2%7D%20%5D%7D%7B6.676%5C%2Cm%7D)
![f = 34.684\,N](https://tex.z-dn.net/?f=f%20%3D%2034.684%5C%2CN)
the friction forces are smaller than the forward force
Either 25% or 75%. does it to how much is wasted or the difference in the input and waste?