Answer:
10N
Explanation:
Equation: ΣF = ma
Fapp = ma
Fapp = (2kg)(5m/s^2) (im guessing you mean 5.00 m/s^2 not m/s)
Fapp = 10*kg*m/s^2
Fapp = 10N
Answer:
θr will increase.
Explanation:
We know that when light travel from one medium to another medium the relationship between refractive index and angle given as
na. sinθa = nb . sinθr
![sin \theta _r=\dfrac{n_asin\theta _a}{n_b}](https://tex.z-dn.net/?f=sin%20%5Ctheta%20_r%3D%5Cdfrac%7Bn_asin%5Ctheta%20_a%7D%7Bn_b%7D)
If na is increased (by using a different type of glass) but θa is kept the same then sinθr will also increase.
So answer is θr will increase.
Answer:
![h = 269.6 m](https://tex.z-dn.net/?f=h%20%3D%20269.6%20m)
Explanation:
Pressure at the bottom of the building and at the top of the building must be related as
![P_{top} = P_{bottom} - \rho g h](https://tex.z-dn.net/?f=P_%7Btop%7D%20%3D%20P_%7Bbottom%7D%20-%20%5Crho%20g%20h)
![P_{top} = 730 mm Hg](https://tex.z-dn.net/?f=P_%7Btop%7D%20%3D%20730%20mm%20Hg)
![P_{bottom} = 755 mm Hg](https://tex.z-dn.net/?f=P_%7Bbottom%7D%20%3D%20755%20mm%20Hg)
now we will have
![(755 \times 10^{-3})(13.6 \times 10^3)(9.81) = P_{bottom}](https://tex.z-dn.net/?f=%28755%20%5Ctimes%2010%5E%7B-3%7D%29%2813.6%20%5Ctimes%2010%5E3%29%289.81%29%20%3D%20P_%7Bbottom%7D)
![P_{bottom} = 1.007 \times 10^5 Pa](https://tex.z-dn.net/?f=P_%7Bbottom%7D%20%3D%201.007%20%5Ctimes%2010%5E5%20Pa)
![P_{top} = (730\times 10^{-3})(13.6 \times 10^3)(9.81)](https://tex.z-dn.net/?f=P_%7Btop%7D%20%3D%20%28730%5Ctimes%2010%5E%7B-3%7D%29%2813.6%20%5Ctimes%2010%5E3%29%289.81%29)
![P_{top} = 0.974 \times 10^5](https://tex.z-dn.net/?f=P_%7Btop%7D%20%3D%200.974%20%5Ctimes%2010%5E5)
now we have
![(1.007 - 0.974)\times 10^5 = 1.25 (9.81) h](https://tex.z-dn.net/?f=%281.007%20-%200.974%29%5Ctimes%2010%5E5%20%3D%201.25%20%289.81%29%20h)
![h = 269.6 m](https://tex.z-dn.net/?f=h%20%3D%20269.6%20m)