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4 years ago

Are sound waves transverse waves or longitudinal waves? Why?

Physics

2 answers:

shusha [124]4 years ago

8 0

Answer:

longitudinal waves

Explanation:

Because they occur due to compressions and rarefactions.

aleksandrvk [35]4 years ago

4 0

Answer: Longitudinal Waves

Explanation: The particles of the medium pass parallel to the course that the heart beat moves. This sort of wave is a longitudinal wave. Longitudinal waves are usually characterised through particle motion being parallel to wave movement. A valid wave traveling thru air is a classic example of a longitudinal wave.

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A train is travelling at speed of 20m/s. Brakes are applied so as to produce a uniform acceleration of -0.5m/s2. find how far th

aivan3 [116]

Use v^2 - u^2 = 2as

Here, u = 20 m/s , a = -0.5 m/s^2 and v = 0

- 400 = -s ======> s = 400 m

Hope it helps, please mark me as brainliest and give me a good rating. Thank You!

7 0

3 years ago

The Petronas twin towers in Malaysia and the Chicago Sears tower have heights of about 452 m and 443 m respectively. If objects

fredd [130]

Answer:

0.09 s

Explanation:

From the second equation of motion,

$S=ut+\frac{1}{2}at^{2}$

Here, u is the initial velocity, a is the acceleration due to gravity, t is time taken, and S is the total displacement or distance.

From the given problem,

initial velocity is zero for both the case.

And the distance of twin tower of malaysia is, $S_{1}=452m$

And the distance of Sears tower of Chicago is, $S_{1}=443m$

Now,rearrange the distance equation for t.

$t=\sqrt{\frac{2S}{a} }$

So time difference.

$\Delta t=\sqrt{\frac{2(452)}{9.8} }-\sqrt{\frac{2(443)}{9.8} }\\\Delta t=\sqrt{92.244898}-\sqrt{90.4081633} \\\Delta t=9.60 s-9.51s\\\Delta t=0.09 s$

Therefore, the difference in time, object will reach the ground is 0.09 s

8 0

3 years ago

A 0.210-kg metal rod carrying a current of 11.0 A glides on two horizontal rails 0.490 m apart. If the coefficient of kinetic fr

sergij07 [2.7K]

Answer:

The magnetic field is $B = 0.0764 \ T$

Explanation:

From the question we are told that

The mass of the metal is $m = 0.210 \ kg$

The current is $I = 11.0 \ A$

The distance between the rail(length of the rod ) is $d = 0.490 \ m$

The coefficient of kinetic friction is $\mu_k = 0.200$

Generally the magnetic force is mathematically represented as

$F_b = B * I * d$

Given that the rod is moving at a constant velocity, it

=> $F_b = F_k$

Where $F_k$ is the kinetic frictional force which is mathematically represented as

$F_k = \mu_k * m * g$

$B * I * d = \mu_k * m * g$

=> $B = \frac{\mu_k * m * g}{I * d }$

substituting values

=> $B = \frac{0.200 * 0.210 * 9.8 }{ 11 * 0.490 }$

=> $B = 0.0764 \ T$

3 0

3 years ago

Compare the kinematics equation governing the motion y =vf+1/2 gf' and the format of the fit equation that you just made y At +B

lidiya [134]

Answer:

please find solution attached

Explanation:

3 0

3 years ago

Read 2 more answers

Assume you have an ice cube and also a small rock that is the same size and shape as the ice cube. Predict what would happen if

Step2247 [10]

Answer: The ice cube would float on top of the water and the rock would sink to the bottom.

Explanation: The ice cube has a smaller density than the rock which allows the ice cube to float but makes the rock sink to the bottom of the glass of water.

7 0

3 years ago