Answer:
Explanation:
Momentum is equal to mass times velocity in kg and m/s, respectively. Therefore,
p = 100(15) so
p = 1500 ![\frac{kg*m}{s}](https://tex.z-dn.net/?f=%5Cfrac%7Bkg%2Am%7D%7Bs%7D)
Answer:
The temperature will decrease (get colder).
Explanation:
Enthalpy changes are heat changes accompanying physical and chemical changes. The enthalpy change is the difference between the sum of the heat contents of products and the sum of heat contents of reactants.
- For an endothermic change, heat is absorbed for the reaction.
- The surrounding becomes colder at the end of the reaction and so is the reaction itself.
- The right choice is that the temperature will decrease.
By the formula of torque balance we know that
![\tau = r\times F](https://tex.z-dn.net/?f=%5Ctau%20%3D%20r%5Ctimes%20F)
here we know that
r = distance of force
F = applied force
so here we know that as we will take large edge knife then the distance of force will increase
due to this the torque will also increase in it so it is easy to pear it
So here we can say
![F_{in}r_1 = F_{out}r_2](https://tex.z-dn.net/?f=F_%7Bin%7Dr_1%20%3D%20F_%7Bout%7Dr_2)
![F_{out} = \frac{r_1}{r_2} F_{in}](https://tex.z-dn.net/?f=F_%7Bout%7D%20%3D%20%5Cfrac%7Br_1%7D%7Br_2%7D%20F_%7Bin%7D)
so output force will increase in this case
So here the correct answer would be
<em>b. the longer the knife, the stronger the output force</em>