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TEA [102]
3 years ago
14

The wavelength of sound wave is 30 m. Frequency is 7 Hz. What is the wave speed

Physics
1 answer:
MaRussiya [10]3 years ago
6 0

Answer:23hz

Explanation:

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What are the two main ways in which chemical bonds are formed
masha68 [24]

Answer:

The two main types of bonds formed between atoms are ionic bonds and covalent bonds.

Explanation:

Hope this helped <3

7 0
3 years ago
In an inverse relationship which one variable increases the other?
konstantin123 [22]

Answer:

as A increases, B decreases, and as B increases, A increases. Hope this helps!

Explanation:

3 0
4 years ago
The pressure at the bottom of a full barrel of water is Poriginal. Determine what happens to the pressure when the radius or hei
erastovalidia [21]

Answer:

C) Pnew=Poriginal/9

Explanation:

From the given conditions:

Original area, A_o=\pi.r_o\,^2

New area of the barrel bottom panel after increasing by a factor of 3:

r_{new}=3r_o

On increasing the radius the area now becomes:

A_{new}=\pi.(3r_o)^2

A_{new}=9\pi.(r_o)^2=9A_o

As we know that there will be no increase in the down-force since the height remains constant.

Pressure is given as:

P_{original}=\frac{Force}{A_o}

∴New pressure:

P_{new}=\frac{Force}{9A}

\Rightarrow P_{new}=\frac{P_{original}}{9}

4 0
3 years ago
A mass of 100kg is acted on by a 400N force acting vertically upward and a 600N force acting at a 45 degrees angle.Calculate the
slava [35]

Answer:

A 1.56    see below

Explanation:

I will assume the 45 degree force is upward

vertical component =   600 sin 45 = 424.26 N

 added to the other vertical force will total 824.26 N

    F = ma

   824.26 = 100 * a    shows a = 8.24 m/s upward

Now we have to assume the mass is ALSO acted on by gravity and this value is given as  9.8  ( so downward is positive)

9.81 -   8.24      =  1.56 m/s^2

8 0
2 years ago
Karina strikes a match to light a candle. Explain what type of reaction the burning match represents in terms of energy
blsea [12.9K]

Answer:

Burning match represents exothermic reaction.

Explanation:

Exothermic reaction:These are the reaction which releases energy into the surroundings.

Endothermic reaction:These are the reaction which absorbs energy from the surroundings.

Burning of the match stick is an Exothermic reaction.This is because amount of energy required to burn the match is very less than of the energy given out by the match on burning.

Input Energy  < Output Energy

5 0
3 years ago
Read 2 more answers
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