All categories

2 years ago

true or false the speed of sound traveling through steel is much less than the speed of sound traveling through air

Physics

2 answers:

ValentinkaMS [17]2 years ago

5 0

True because steel is much heavier and will make the sound travel through it slower

Misha Larkins [42]2 years ago

4 0

This is false. Sound travels faster through steel. That is why you can see people in movies putting their ear on the railroads to see whether a train is coming. That is because they can't hear it through air, but the sound travels through the steel.

You might be interested in

What is the wave where the oscillation is perpendicular to the direction<br> of motion.

o-na [289]

A. Oscillating magnetic fields are parallel to oscillating electric fields, which are perpendicular to the direction of wave motion.

4 0

1 year ago

One of the primary goals of the Kepler space telescope is to search for Earth-like planets. Data gathered by the telescope indic

amid [387]

Answer:

85.62 m

168.75 years

101.04 years

Explanation:

$L_0$ = Length of ship = 143 m

v = Velocity of ship = 0.8c

c = Speed of light

s = Distance to Boralis orbit = 135 ly

Gamma value

$\gamma=\dfrac{1}{\sqrt{1-\dfrac{v^2}{c^2}}}\\\Rightarrow \gamma=\dfrac{1}{\sqrt{1-\dfrac{0.8^2c^2}{c^2}}}\\\Rightarrow \gamma=1.67$

Length contraction is given by

$L=\dfrac{L_0}{\gamma}\\\Rightarrow L=\dfrac{143}{1.67}\\\Rightarrow L=85.62\ m$

The length is 85.62 m

Time taken

$t=\dfrac{s}{v}\\\Rightarrow t=\dfrac{135}{0.8}\\\Rightarrow t=168.75\ years$

Time taken from the perspective one Earth is 168.75 years

Time dilation is given by

$t'=\dfrac{t}{\gamma}\\\Rightarrow t'=\dfrac{168.75}{1.67}\\\Rightarrow t'=101.04\ years$

The time taken from the perspective of the ship is 101.04 years

8 0

3 years ago

Which one of the following weight management plans is the most effective

ioda

Which of the following?

7 0

3 years ago

Read 2 more answers

Help me please i dont understand

solniwko [45]

Answer:

It is b

Explanation:

The question tells you that the distance was increased 3 times the original distance, which means it was moved 3 times

5 0

2 years ago

Which is the correct interpretation of the formula mgf2? the lattice contains 1 magnesium atom for every 2 fluorine atoms. the l

mixer [17]

Answer: the lattice contains 1 magnesium ion for every 2 fluoride ions.

$MgF_2$ is an ionic compound. It contains positive ions of Magnesium and and negative ions of Fluorine. To balance the +2 positive charge of one magnesium ion, two (-1) negatively charged Fluorine ions are present. Hence, The correct interpretation of $MgF_2$ is that the lattice contains 1 Magnesium ion for every 2 Fluoride ions.

7 0

2 years ago