After a rocket falling through the air explodes, the net momentum of its

A rifle is fired in a valley with parallel vertical walls. The echo from one wall is heard 1.55 s after the rifle was fired. The

elena55 [62]

Answer:

$w=694.575\ m$

Explanation:

Given:

velocity of the sound, $v=343\ m.s^{-1}$

time lag in echo form one wall of the valley, $t= 1.55\ s$

time lag in echo form the other wall of the valley, $t'=2.5\ s$

<u>distance travelled by the sound in the first case:</u>

$d=v.t$

$d=343\times 1.55$

$d=531.65\ m$

Since this is the distance covered by the sound while going form the source to the walls and then coming back from the wall to the source so the distance of the wall form the source will be half of the distance obtained above.

$s=\frac{d}{2}$

$s=\frac{531.65}{2}$

$s=265.825\ m$

<u>distance travelled by the sound in the second case:</u>

$d'=v.t'$

$d'=343\times 2.5$

$d'=857.5\ m$

Since this is the distance covered by the sound while going form the source to the walls and then coming back from the wall to the source so the distance of the wall form the source will be half of the distance obtained above.

$s'=\frac{d'}{2}$

$s'=\frac{857.5}{2}$

$s'=428.75\ m$

<u>Now the width of valley:</u>

$w=s+s'$

$w=265.825+428.75$

$w=694.575\ m$

6 0

4 years ago

Which type of reaction does this diagram represent?

Ugo [173]

The diagram represents a chain reaction that is caused by nuclear fission.

<h3>What is a nuclear fission reaction?</h3>

A nuclear fission reaction is a reaction in which the nucleus of a larger atom is split into two or more smaller nucleus of atoms.

Nuclear fission can proceed in the form of a chain reaction in which the products of the first fission reaction are used to initiate further fission reactions.

Therefore, the diagram represents a chain reaction that is caused by nuclear fission.

Learn more about nuclear fission at: brainly.com/question/22155336

#SPJ1

4 0

2 years ago

Read 2 more answers

What will be the acceleration of a 40-kilogram object that is pushed with a net force of 80 newtons?

ratelena [41]

= 80 N/40 kg
= 2 m/s 2

4 0

3 years ago

The energy equivalent of the rest mass of an electron is

DerKrebs [107]

Answer:energy times mass

Explanation: yeh

3 0

3 years ago

Explain the term "avalanche state"

vagabundo [1.1K]

Answer:

The downwind side of an obstacle such as a ridge. The addition of weight on top of a snowpack, usually from precipitation, wind drifting, or a person. An avalanche that releases from a point and spreads downhill collecting more snow - different from a slab avalanche. Also called a point-release or sluff.

Explanation:

5 0

3 years ago