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mihalych1998 [28]
3 years ago
6

PLEASE HELP I'LL GIVE BRAINLIEST: Consider a sound wave produced by a tuning fork. Through which materials would the sound trave

l the fastest? Order the materials shown according to the speed at which a sound wave would travel through them, from slowest to fastest.

Physics
2 answers:
ra1l [238]3 years ago
8 0

Answer:

  1. Cold air
  2. Hot air
  3. Ocean
  4. Glass
irina1246 [14]3 years ago
7 0

Answer:

cold air

hot air

the ocean

glass

Sound is a moving density wave. it can travel through basically any normal form of matter. What does this mean density wave? well what this means is that you have a domino effect bascally, one air molecule is moving, it bumps its neighbor then its naghborr bumps its other neighbor and it keeps going until the sound energy is dispersed or turned into heat.

The wave speed of sound depends upon how close the molecules are to each other. It is like plucking a string. if you pull it tight the string vibrates much more frequently than if you hold it very loosely. In air, the molicules are quite far apart from each other, so the sound travels a lot slower but in a metallic material, the atoms are shoulder to shoulder and the speed of sound is about 1300 mph were as in the air it's about 300 mph.

Hope it helped

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pychu [463]

Answer:

B)

Explanation:

The value the scale shows is the reaction force to the normal force (they are equal by Newton's 3rd Law) that the scale exerts on Eric.

The forces on Eric are his weight (downward) and this normal force (upward), so we can write the net force over him as (also using Newton's 2nd Law):

F=W-N=ma

which means

N=W-ma=mg-ma=m(g-a)

and for our values this is:

N=mg-ma=(70kg)(9.8m/s^2-1.7m/s^2)=567N

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Calculate the density of a tin of mass 100g whose dimensions are 2cmx5cmx​
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a force 2.4E2 N exists between a positive charge of 8E-5 C and a positive charge of 3E-5 C. What distance separates the charges?
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The distance between the two charges is 0.3 m

Explanation:

The electrostatic force between two charged objects is given by Coulomb's law:

F=k\frac{q_1 q_2}{r^2}

where:

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In this problem, we are given the following:

q_1 = 8\cdot 10^{-5} C

q_2 = 3\cdot 10^{-5} C

F=2.4\cdot 10^2 N

Therefore, we can rearrange the equation to solve for r, the distance between the two charges:

r=\sqrt{\frac{kq_1 q_2}{F}}=\sqrt{\frac{(8.99\cdot 10^9)(8\cdot 10^{-5})(3\cdot 10^{-5})}{2.4\cdot 10^2}}=0.3 m

Learn more about electrostatic force:

brainly.com/question/8960054

brainly.com/question/4273177

#LearnwithBrainly

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3 years ago
A person travelled in the -x direction at a constant speed of 2.5 m/s. The person's final position is -10.0 m, and the initial p
Nostrana [21]

Answer:

(c) time required to travel = 8 sec

Explanation:

We have given the final position = -10 m on x axis

And the initial position =10 m

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Time is given by t=\frac{distance}{speed}=\frac{20}{2.5}=8 sec

So the option (c) is correct option

4 0
3 years ago
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