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Molodets [167]
3 years ago
12

What is the wavelength of a wave with a frequency of 330 Hz and a speed of

Physics
1 answer:
k0ka [10]3 years ago
5 0

Answer:

A

Explanation:

wavelength can be obtained by speed of the wave divided by its frequency

\frac{343}{330}

1.04m

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Can an ordinary object, like a motorcycle, be mass-less? Yes or No
Drupady [299]

Answer:

no.

Explanation:

because the mass of an object never changes.

4 0
3 years ago
The melting point of a solid is 90.0C. What is the heat required to change 2.5 kg of this solid at 30.0C to a liquid? The specif
Neko [114]

Hey again!

Ok..

Now... The melting Point of this solid is 90°C.

Meaning That as soon as it gets to this temp... It STARTS Melting.

So at that temp... It still has some solid parts in it.

You can say its a Solid Liquid Mixture.

Additional Heat being applied at that point is not raising the temperature;rather its used in breaking the bonds in the solid. This is the Fusion stage.

After Fusion...It'd then Be a Pure Liquid with no solids in it.

So

Q'=MC∆0----- This is the heat needed to take the solid's temp from 30°c - 90°c

Q"=ml ----- This is the heat used in breaking the bonds holding the solids in the solid-liquid phase.

So

Q= Q' + Q"

Q= mc∆0 + ml

∆0 = 90°c - 30°c = 60°c

Q= 2.5(390)(60) + (2.5)(4000)

Q=6.9 x 10⁴Joules

7 0
3 years ago
A ___ contains paired statements that can be used to identify organisms.
olganol [36]
Fungi.
A fungi contains paired statements that can be used to identify organisms.
6 0
2 years ago
A water tank is filled with water. What will be the pressure of the water when the level of the water is 6m?
Luden [163]

Answer:

pressure = density x g x height

= 1000 x 10 x 6 Pascal

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3 0
3 years ago
Read 2 more answers
Consider the two vectors A = 3 î − ĵ and B = − î − 2 ĵ.
LUCKY_DIMON [66]

Answer:

(a) A+B = 2i-3j

(B) A-B = 4i + j

Explanation:

We have given two vectors A = 3i-j and B = -1-2j

We have to find the two vectors that is A+B and A-B

(A) In first art we have calculate A+B for this we have to add simply vector A and v ector B

So A+B = 3i-j-i-2j = 2i-3j

(B) In this part we have to find A-B for this we have to simply subtract B from A so A-B = 3i-j-(-i-2j) =3i-j+i+2j =4i+j

6 0
3 years ago
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