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Andreyy89
3 years ago
6

If the mirror reflection coefficients for a laser resonator of length 5 m are 98.5% and 60%, and there are no losses, determine

the cavity threshold gain
Physics
2 answers:
slavikrds [6]3 years ago
4 0

Answer:

n sei

Explanation:

n seei

Irina-Kira [14]3 years ago
4 0

Answer:

i relly need help with points it  whould help if you make me brainliest

Explanation:

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Rock at the top of a 20 m tall hill the rock has a mass of 10 kg how much potential energy does it have
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Which statement is true regarding the vectors shown.
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The roller coaster car has a mass of 700 kg, including its passenger. If it is released from rest at the top of the hill A, dete
sweet [91]

Answer:

h = 18.75 m

Now when it will reach at point B then its normal force is just equal to ZERO

N_B = 0

F_n = 1.72 \times 10^4

Explanation:

Since we need to cross both the loops so least speed at the bottom must be

v = \sqrt{5 R g}

also by energy conservation this is gained by initial potential energy

mgh = \frac{1}{2}mv^2

v = \sqrt{2gh}

so we will have

\sqrt{2gh} = \sqrt{5Rg}

now we have

h = \frac{5R}{2}

here we have

R = 7.5 m

so we have

h = \frac{5(7.5)}{2}

h = 18.75 m

Now when it will reach at point B then its normal force is just equal to ZERO

N_B = 0

now when it reach point C then the speed will be

mgh - mg(2R_c) = \frac{1}{2]mv_c^2

v_c^2 = 2g(h - 2R_c)

v_c = 13.1 m/s

now normal force at point C is given as

F_n = \frac{mv_c^2}{R_c} - mg

F_n = \frac{700\times 13.1^2}{5} - (700 \times 9.8)

F_n = 1.72 \times 10^4

7 0
4 years ago
Scientists in a test lab are testing the hardness of a surface before constructing a building. Calculations indicate that the en
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Building depression < 20 cm

Building depression = (cm depression per floor) * (no. of floors)
7 0
3 years ago
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