Answer:
a) n2=(n1sin1)(sin2)
b) 1.18
c) 201081632.7m/s
d) 254237288.1m/s
Explanation:
a) We can calculate the index of refraction of the second material by using the Snell's law:
![n_1sin\theta_1=n_2sin\theta_2](https://tex.z-dn.net/?f=n_1sin%5Ctheta_1%3Dn_2sin%5Ctheta_2)
![n_2=\frac{n_1sin\theta_1}{sin\theta_2}](https://tex.z-dn.net/?f=n_2%3D%5Cfrac%7Bn_1sin%5Ctheta_1%7D%7Bsin%5Ctheta_2%7D)
b) By replacing in the equation of a) we obtain:
![n_2=\frac{(1,47)sin49\°}{sin69.5\°}=1.18](https://tex.z-dn.net/?f=n_2%3D%5Cfrac%7B%281%2C47%29sin49%5C%C2%B0%7D%7Bsin69.5%5C%C2%B0%7D%3D1.18)
c) light velocity in the medium is given by:
![v=\frac{c}{n_1}=\frac{3*10^{8}m/s}{1.47}=204081632.7\frac{m}{s}](https://tex.z-dn.net/?f=v%3D%5Cfrac%7Bc%7D%7Bn_1%7D%3D%5Cfrac%7B3%2A10%5E%7B8%7Dm%2Fs%7D%7B1.47%7D%3D204081632.7%5Cfrac%7Bm%7D%7Bs%7D)
d)
![v=\frac{c}{n_2}=\frac{3*10^{8}m/s}{1.18}=254237288.1\frac{m}{s}](https://tex.z-dn.net/?f=v%3D%5Cfrac%7Bc%7D%7Bn_2%7D%3D%5Cfrac%7B3%2A10%5E%7B8%7Dm%2Fs%7D%7B1.18%7D%3D254237288.1%5Cfrac%7Bm%7D%7Bs%7D)
hope this helps!!
Answer:β^+
Explanation: it is beta + , also positron emission radiation
Answer:
The total voltage of the circuit is 18 volts.
Explanation:
We have, three identical resistors of resistance 3 ohms are connected in series in a circuit.
For a series combination, the equivalent resistance is given by the sum of individual resistances i.e.
![R_{eq}=R_1+R_2+R_3\\\\R_{eq}=3+3+3\\\\R_{eq}=9\ \Omega](https://tex.z-dn.net/?f=R_%7Beq%7D%3DR_1%2BR_2%2BR_3%5C%5C%5C%5CR_%7Beq%7D%3D3%2B3%2B3%5C%5C%5C%5CR_%7Beq%7D%3D9%5C%20%5COmega)
Let V is the voltage of the battery if the current in the circuit is 2 A. So,
![V=IR](https://tex.z-dn.net/?f=V%3DIR)
![V=2\times 9\\\\V=18\ V](https://tex.z-dn.net/?f=V%3D2%5Ctimes%209%5C%5C%5C%5CV%3D18%5C%20V)
So, the total voltage of the circuit is 18 volts.
Object Motion: 25 m/s
Circumference of Circle:
1/4 Circumference of Circle in 1 second = 25 meters
25 meters times 4 = Circumference of Circle
Circumference = 100 meters
Formula to Find Circumference of Circle: (work opposite)
C = 2<span>πr
100 = </span>2πr divided
100/2π = r simplify
50/π = r (exact radius)
Answer:
50/π meters = r (exact radius)
Answer:
9.875
Explanation:
w=f×s
395=40×s
make s the subject of the formula
s=395/40
=9.875