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3 years ago

PLEASE HELP MEE PLEASE I BEG

Physics

1 answer:

TEA [102]3 years ago

8 0

Explanation: (I think)

Plug your values into the momentum equation.

So m1= 63kg

m2 = 10 kg

V1 = 12 m/s

And then plug in your values and solve for your unknown (v2)

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How much charge can be added to each of the plates before a spark jumps between the two plates? For such flat electrodes, assume

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Answer:

$9.56\cdot 10^{-7} C$

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- The side of one plate is

L = 19 cm = 0.19 m

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$A=L^2=(0.19)^2=0.036m^2$

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$E=3\cdot 10^6 N/C$

Substituting this value into the previous formula and re-arranging it for Q, we find the charge:

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4 years ago

Please help :( A ray of laser light strikes a glass surface at an angle θa = 22.5° to the normal. What is the angle θb of the re

pshichka [43]

Answer:

Explanation:

We shall apply law of refraction which is as follows

sin i / sinr = μ , where i is angle of incidence , r is angle of refraction and μ is refractive index

here i = θa = 22.5°

r = θb

μ = 1.77

sin22.5 / sinθb = 1.77

.3826 / sinθb = 1.77

sinθb = .216

θb = 12.5 °.

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3 years ago