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Brrunno [24]
3 years ago
14

Why does the speed of sound vary depending on the medium through which it travels. in general?

Physics
1 answer:
avanturin [10]3 years ago
4 0
Because it is how fast it goes and it depends on the speed
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Has a mirror that collects light which is reflected to the eyepiece to show the image
Likurg_2 [28]
That could be either a reflecting telescope, or else a periscope.
7 0
3 years ago
What is the acceleration of a cabinet of mass 45 kilograms if Jake and Ted push it by applying horizontal force of 25 newtons an
sladkih [1.3K]

Answer:

a=0.96\ m/s^2

Explanation:

Given that,

Mass of cabinet, m = 45 kg

Two horizontal force of 25 newtons and 18 newtons respectively in the same direction.

When the forces are acting in same direction, the net force is equal to the sum of forces i.e.

F = 25 N + 18 N = 43 N

Let a is the aceleration of the cabinet

So,

F = ma

a=\dfrac{F}{m}\\\\a=\dfrac{43}{45}\\\\a=0.96\ m/s^2

So, the acceleration of the cabinet is 0.96\ m/s^2.

3 0
3 years ago
If you want to go to a community college and transfer to a four-year university, what classes are required to transfer? How many
bagirrra123 [75]

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2 Physical education courses.

Completion of college algebra

That's all I think

3 0
3 years ago
complete the following equation that represents the complete combustion of hexane in a car engine.C6H14 + O2
mina [271]

The balanced combustion reaction for butane is;

2C4H10 + 13O2 → 8CO2 + 10H2O

Molar mass of water = 18.02 g/mol

Molar mass of oxygen = 32 g/mol

 

2.46g H2O(1 mol H2O/18.02g)(13 mol O2/10 mol H2O)(32g O2/1 mol O2) = 5.68g O2

5 0
3 years ago
Tính hiệu suất nhiệt của động cơ nhiệt biết nhiệt lượng ở nguồn nóng 420,4kJ/kg và nhiệt lượng ở nguồn lạnh 218kJ/kg.
Travka [436]

Answer:

69

Explanation:

just because

6 0
2 years ago
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