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3 years ago

This is a science question

Physics

2 answers:

Sidana [21]3 years ago

6 0

The answer i think is A.

Anna35 [415]3 years ago

3 0

Answer:

Option A.

Explanation:

In accordance with triangles' properties, the location of an earthquake can be determined by analyzing the amplitude and wavelength of seismic waves recorded in a seismic data.

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3) A 900N mountain climber scales a 100m cliff. How much work is done by the mountain climber?

Y_Kistochka [10]

Answer:

90 kJ

Explanation:

Work = force × distance

W = (900 N) (100 m)

W = 90,000 J

W = 90 kJ

4 0

3 years ago

Read 2 more answers

Does aluminum foil refract light? Why?

nikitadnepr [17]

yes it does it because the material cause it to refract and the stronger it is the more it will refract

4 0

3 years ago

For a home sound system, two small speakers are located so that one is 52 cm closer to the listener than the other. What is the

galina1969 [7]

Answer:

The first frequency of audible sound in the speed sound is

f = 662 Hz

Explanation:

vs = 344 m/s

x = 52 cm * 1 / 100m = 0.52m

The wave length is the distance between the peak and peak so

d = 2x

d = 2*0.52 m

d = 1.04 m

So the frequency in the speed velocity is

f = 1 / T

f = vs / x = 344 m/s / 0.52m

f ≅ 662 Hz

7 0

3 years ago

¿A qué clase social pertenecen?

Genrish500 [490]

Answer:

Explanation:

5 0

3 years ago

Estimate the wavelength of electrons that have been accelerated from rest through a potential difference of 60 kV.

ivolga24 [154]

Answer: 2.068* $10^{-14}$ m

Explanation: According to work energy-theorem , the workdone in accelerating the electron equals the energy it would give off in terms of light.

workdone= qV

energy = hc/λ

q=magnitude of an electronic charge= 1.602* $10^{-16}$

h= planck constant = 6.626* $10^{-34}$

c= speed of light =2.998* $10^{8}$

v= potential difference= 6* $10^{4}$

λ= wavelength=unknown

by making λ subject of formulae we have that

λ= $\frac{hc}{qv}$

λ = 6.626* $10^{-34}$ * 2.998* $10^{8}$ / 1.602* $10^{-16}$ * 6* $10^{4}$

λ = $\frac{19.878*10^{-26} }{9.612*10^{-12} }$

by doing the necessary calculations, we have that

λ = 2.068* $10^{-14}$ m

8 0

3 years ago