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3 years ago

the three major scales used to measure earthquakes are Mercalli scale Richard scale and magnitude scale

1 answer:

3 0

False; the three major scales used to measure earthquakes are the Mercalli Scale, the Richter Scale, and the Magnitude Scale. I hope this helps!

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Red light of wavelength 633 nm from a helium-neon laser passes through a slit 0.400mm wide. The diffraction pattern is observed

kogti [31]

Answer:

a) $y_{first}=5.3mm$

b) $y_{second}=10.6-5.3 =5.3 mm$

Explanation:

The width of the central bright in this diffraction pattern is given by:

$y=\frac{m\lambda D}{a}$ when m is a natural number.

here:

m is 1 (to find the central bright fringe)
D is the distance from the slit to the screen
a is the slit wide
λ is the wavelength

So we have:

$y_{first}=\frac{633*10^{9}*3.35}{0.0004}$

$y_{first}=5.3mm$

Now, if we do m=2 we can find the distance to the second minima.

$y_{2}=\frac{2*633*10^{9}*3.35}{0.0004}$

$y_{2}=10.6 mm$

Now we need to subtract these distance, to get the width of the first bright fringe :

$y_{second}=10.6-5.3 =5.3 mm$

I hope it heps you!

4 0

3 years ago

A particle of mass 2 g travel a distance of 12 m in a time travel of 2 minute assuming the speed was constant find its kinetic e

balandron [24]

Answer:

0.00001 J

Explanation:

$k.e = \frac{1}{2} m {v}^{2} \\ = \frac{1}{2} (0.002) { ( \frac{12}{120} )} ^{2} \\ = 0.00001j$

3 0

3 years ago

The magnitude of vector A is 10. Which of the following could be the components of A?

kotykmax [81]

Answer: B. Ax = 6, Ay=8

Explanation:

5 0

3 years ago

A 30 kg TV falls out of a 5 meter high window, reaching a

butalik [34]

Answer:

300kgm/s

Explanation:

Given parameters:

Mass of TV = 30kg

Height of building = 5m

Maximum speed = 10m/s

Unknown:

Momentum before it hits the ground = ?

Solution:

Momentum is the quantity of motion a body possess or contains. It is expressed as;

Momentum = mass x velocity

Insert the parameters and solve;

Momentum = 30 x 10

Momentum = 300kgm/s

8 0

3 years ago

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Which of these is outside of the solar system? A.Sun B.Galaxy C.Saturn D.Moon

Angelina_Jolie [31]

It would be the Galaxy because the solar system is just plants are stuff. But, the galaxy expands way farther out than the solar system. The galaxy is quite an interesting thing. (You should know that the galaxy is outside the solar system 0_0 )

4 0

3 years ago

Read 2 more answers