The distance that the force moves" is the one among the following choices given in the question that must be increased, if a simple machine reduces the strength of a force. The correct option among all the options that are given in the question is the first option or option. I hope the answer helped you.
Answer:
Explanation:
<u>Given:</u>
velocity of the ball first and ball second, 
angle of projection of the first ball, 
∵The balls should land at the same point,
∴their range of projectile,
As we know for the range of projectile:
∵ we have equal range in both the cases
![2\theta_2=sin^{-1}[sin 144^{\circ}]](https://tex.z-dn.net/?f=2%5Ctheta_2%3Dsin%5E%7B-1%7D%5Bsin%20144%5E%7B%5Ccirc%7D%5D)
![\theta_2=\frac{1}{2}\times sin^{-1}[sin 144^{\circ}]](https://tex.z-dn.net/?f=%5Ctheta_2%3D%5Cfrac%7B1%7D%7B2%7D%5Ctimes%20sin%5E%7B-1%7D%5Bsin%20144%5E%7B%5Ccirc%7D%5D)
I believe it wattage or watts
Answer:
1.11
Explanation:
The index of the medium can be calculated using below formula
V= c/ n ............eqn(1)
Where V= velocity of the light is reduced to while traveling through the second medium= 2.7 x 10^8 m/s
n= index of the medium
c= speed of light= 3 x 10^8 m/s
Substitute for the values in eqn(1)
2.7 x 10^8 = (3 x 10^8 m/s)/ n
Making " n" subject of the formula, we have
n= (3 x 10^8 )/(2.7 x 10^8)
n= 1.11
Hence, the index of the medium is 1.11
