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frosja888 [35]
3 years ago
8

The loudness of a sound is determined by the __________, or height, of the sound wave.

Physics
2 answers:
Fittoniya [83]3 years ago
6 0

c

just took the quiz

balandron [24]3 years ago
5 0

C.    amplitude....................


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OleMash [197]

Energy can neither be created nor be destroyed.

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1.)Which is the correctly balanced equation?
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A. The correctly balanced equation is that in which the number of atoms of a certain element at the left-hand side is similar to that in the right hand side or the reactant side and product side, respectively. From the given equation, the answer would be,

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B. In the given chemical reaction above, heat is emitted such that it appears in the product side of the equation. Hence, this is an example of a combustion reaction. 

C. Similar with the reasoning in letter A, the answer to this item is,
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3 years ago
What is the force on an object that accelerates at 2 m/s/s and has a mass of 120 kg
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Answer:

240 Newtons

Explanatiohn:

f = m × a

f = 120 × 2

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<h3>The force is 240 Newtons</h3>
6 0
3 years ago
How do you find the normal force here? I forgot
kakasveta [241]
Normal force is mass x gravity, so mass x 9.81
6 0
3 years ago
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Projectiles that strike objects are good examples of inelastic collisions. A 0.1 kg nail driven by a gas powered nail driver col
Ratling [72]
In an inelastic collision, only momentum is conserved, while energy is not conserved.

1) Velocity of the nail and the block after the collision
This can be found by using the total momentum after the collisions:
p_f=(m+M)v_f=4.8 kg m/s
where
m=0.1 kg is the mass of the nail
M=10 kg is the mass of the block of wood
Rearranging the formula, we find v_f, the velocity of the nail and the block after the collision:
v_f= \frac{p_f}{m+M}= \frac{4.8 kg m/s}{0.1 kg+10 kg}=  0.48 m/s

2) The velocity of the nail before the collision can be found by using the conservation of momentum. In fact, the total momentum before the collision is given only by the nail (since the block is at rest), and it must be equal to the total momentum after the collision:
p_i = mv_i = p_f
Rearranging the formula, we can find v_i, the velocity of the nail before the collision:
v_i =  \frac{p_f}{m}= \frac{4.8 kg m/s}{0.1 kg}=48 m/s
6 0
3 years ago
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