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choli [55]
2 years ago
15

You really have a thing for screaming outside. So on a day where the speed of sound is 343 m/s you go outside and scream at a wa

ll. It takes 0.5 s for you to hear your echo. How far away is the wall that you screamed at?
Physics
1 answer:
OlgaM077 [116]2 years ago
8 0
Speed = Distance/Time
Distance = Speed x Time
343 x 0.5 = 1/2 of 343
343 x 0.5 = 171.5
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Please help me!
sergeinik [125]

C. The Densities are equal.

<h3>What is density?</h3>

Density is mass per unit volume or mass of a unit volume of a material substance.

If m1, V1 and D1 = mass, volume  and density respectively of ball C

m2, V2 and D2 = mass, volume and density respectively of ball D

According to the Question ,

V_{1} = 3V_{2}  , m_{2}  = \frac{1}{3} (m_{1} ) \\ \\= m_{1} = 3m_{2}

Therefore,

\frac{D_{1} }{D_{2} }  = (\frac{m_{1} }{V_{1} } )* (\frac{m_{2} }{V_{2} } )\\ \\= (\frac{3m_{2} }{3V_{2} })*(\frac{V_{2} }{m_{2} }) \\\\= 1

Hence, D1 = D2

Learn more about density here:brainly.com/question/15164682

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6 0
3 years ago
A transformer has 100 turns in its primary coil and 75 turns in its secondary coil. If the input voltage is 12.0 V, what is the
Sindrei [870]
Is 54 por que es igual
7 0
3 years ago
A motorcycle is capable of accelerating at 1.5 m/s 2. Starting from rest how far can it travel in 0.5 seconds?
Setler79 [48]

Answer:

the answer is 0 .75m

Explanation:

where are finding the distance the speed is given as well as the time..so you multiple the speed with the time thus you get the distance..i hope that's the answer..

5 0
4 years ago
Read 2 more answers
You throw a stone horizontally at a speed of 5.0 m/s from the top of a cliff that is 78.4 m high.
Monica [59]

a)You throw a stone horizontally at a speed of 5.0 m/s from the top of a cliff that is 78.4 m high.

from above statement we got

height = 78.4 m

since the ball is thrown, so its vertical velocity would be zero

u = 0

taking g = 9.8m/s^2

now, using the equation of motion

h = ut + gt^2/2

now putting all the values in it

we got ,

78.4 = 9.8 * t^2/ 2

by solving we got,

t = 4 sec

b) now, since along the horizontal , no force acting and accelaration is zero so

R = ut , R is RANGE

R = 5 * 4

range =  20 m

c)  vertical components of the stone’s velocity just before it hits the ground = v sin θ =

horizontal   components of the stone’s velocity  just before it hits the ground = v cos θ

To know more about velocity  visit :

brainly.com/question/18084516

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4 0
2 years ago
Que diferencia hay entre la energía térmica y la calor?
marysya [2.9K]

Answer:

Energia termica:  La energía térmica es la forma de energía que interviene en los fenómenos caloríficos. Cuando dos cuerpos a diferentes temperaturas se ponen en contacto, el caliente comunica energía al frío; el tipo de energía que se cede de un cuerpo a otro como consecuencia de una diferencia de temperaturas es precisamente la energía térmica.    

Calor:La cantidad de energía térmica que un cuerpo pierde o gana en contacto con otro a diferente temperatura recibe el nombre de calor.  El calor constituye, por tanto, una medida de la energía térmica puesta en juego en los fenómenos caloríficos.

Explanation:

I had to translated, hoped this helped. Brainliest?

7 0
3 years ago
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