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marin [14]
3 years ago
10

What is the critical angle for glass when the refractive index is 1.45

Physics
1 answer:
Aleksandr-060686 [28]3 years ago
7 0

Answer:43.6°

Explanation:

Refractive index=n=1.45

Critical angle=c

n=1/sinc

1.45=1/sinc

Cross multiply

1.45sinc=1

Divide both sides by 1.45

(1.45sinc)/1.45=1/1.45

sinc=0.6897

c=sin(inverse)(0.6897)

c=43.6°

Critical angle is 43.6°

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3 years ago
What is the frequency of a wave if the speed is 24 m/s and the wave is 2 meters
vekshin1
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24/2=f(2)/2
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4 0
4 years ago
The age of the universe is around 100,000,000,000,000,000s. A top quark has a lifetime of roughly 0.000000000000000000000001s. W
QveST [7]

Answer:

10^{41}

Explanation:

Age of the universe = 100,000,000,000,000,000=10^{17}\ s

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Top quark life would be given by

t=\dfrac{\text{Age of the universe}}{\text{Lifetime of a top quark}}\\\Rightarrow t=\dfrac{10^{17}}{10^{-24}}\\\Rightarrow t=10^{17+24}\\\Rightarrow t=10^{41}\ s

Hence, the answer is 10^{41}\ s

7 0
4 years ago
A proton is released from rest in a uniform electric field. After the proton has traveled a distance of 10.0 cm, its speed is 1.
GREYUIT [131]

Answer:

Explanation:

distance travelled s = 10 cm

speed v = 1.4 x 10⁶ m /s

v² = u² + 2as

u = 0

v² = 2as

( 1.4 x 10⁶ )² = 2 x a x .10

a = 9.8 x 10¹² m /s²

force on proton = mass x acceleration

= 1.67 x 10⁻²⁷ x 9.8 x 10¹²

= 16.366 x 10⁻¹⁵ N .

If magnitude of electric field be E

force on proton

= E x charge on proton

= E x 1.6 x 10⁻¹⁹

E x 1.6 x 10⁻¹⁹ = 16.366 x 10⁻¹⁵

E = 10.22 x 10⁴ N/C

The direction of electric field will be positive x - direction .

b )

Speed of proton = 1.4 x 10⁶  m /s .

6 0
4 years ago
(a) Assume the equation x = At3 + Bt describes the motion of a particular object, with x having the dimension of length and t ha
SashulF [63]

Answer:

A = [L*T^-3]

B = [L*T^1]

Explanation:

The equation

x = A*t^3 + B*t

has multiple terms that when added together result in x. We know x has dimension of length, so all the terms must have dimensions of length too.

A*t^3 = [L]

A*[T^3] = [L]

A = [L/T^3]

A = [L*T^-3]

And

B*t = [L]

B*[T] = [L]

B = [L/T]

B = [L*T^-1]

6 0
4 years ago
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