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3 years ago

Which of these is a TRUE statement

Physics

2 answers:

Illusion [34]3 years ago

7 0

Answer:

The true statement is that sound travels through solids easier than liquids

Explanation:

The first statement is wrong as sound travels faster within a denser medium

The third statement is wrong as sound travels faster within a denser medium

The fourth statement is wrong as solids are denser than liquids. That is why when you put your ear on the track of a train (DON'T TRY IT) the sound reaches faster to your ears than if you hear something underwater

dangina [55]3 years ago

3 0

Answer:

Sound travels through solids and liquids at the same speed

Explanation:

Because sound needs a dencer object to travel fast and since both liquid and solids are closer than gas sound travles faster in them.

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After fertilization in the fallopian tube, how many days will the zygote travel before arriving at uterus?.

natta225 [31]

After fertilization in the fallopian tube, It will take 6-12 days for the zygote to travel before arriving at the uterus.

<h3>What is a zygote?</h3>

A zygote is, generally speaking, a cell created by the fusion of two gametes; the growing person is created from such a cell.

It takes the zygote around 6–12 days following fertilization in the fallopian tube for the fertilized egg to travel to the uterus and attach to the uterus, a process known as implantation.

Hence It will take 6-12 days for the zygote to travel before arriving at the uterus.

To learn more about the zygote refer;

brainly.com/question/465851

#SPJ1

6 0

2 years ago

Which choice can be correctly defined as “the sum of all charge in a closed system remains constant”?

Elena-2011 [213]

Answer:

Law conservation of charge (D)

Explanation:

8 0

3 years ago

Read 2 more answers

An object is moving to the left with a constant speed. What can be concluded about the forces acting upon the object?

MariettaO [177]

Answer: sum of forces is zero

Explanation: acording to the newton first law you can say that the sum of the forces acting over the object is zero no matter the direction of movement

good luck

mario

8 0

3 years ago

Marvin uses a long copper wire with resistivity 1.68 x 10^-8 Ω⋅m and diameter 1.00 x 10^−3 m to create a solenoid that has a 3

Mazyrski [523]

Answer with Explanation:

We are given that

Resistivity of copper wire= $\rh0=1.68\times 10^{-8}\Omega m$

Diameter=d= $1.00\times 10^{-3} m$

Radius of copper wire= $r=\frac{d}{2}=\frac{1}{2}\times 10^{-3} m$

Radius of solenoid=r' $=3 cm=3\times 10^{-2} m$

1 m=100 cm

a.Length of wire=l=11.3 m

Area of wire=A= $\pi r^2$

Where $\pi=3.14$

A= $3.14\times (\frac{1}{2}\times 10^{-3})^2$

Resistance, R= $\rho \frac{l}{A}$

Using the formula

$R=1.68\times 10^{-8}\times\frac{11.3}{3.14\times (\frac{1}{2}\times 10^{-3})^2}$

$R=0.24\Omega$

B.Length of solenoid= $2\pi r'=2\times 3.14\times 3\times 10^{-2}=0.188$ m

Number of turns= $n_0=\frac{l}{2\pi r'}=\frac{11.3}{0.188}$

$n_0$ =60

C.Potential difference,V=3 V

Current,I= $\frac{V}{R}$

I= $\frac{3}{0.24}=12.5 A$

D.Total length =0.1 m

Number of turns per unit length,n= $\frac{60}{0.1}=600$

Magnetic field along central axis inside of the solenoid,B= $\mu_0 nI$

$B=4\pi\times 10^{-7}\times 12.5\times 600=9.42\times 10^{-3} T$

4 0

3 years ago

Read 2 more answers

An object initially at rest breaks into two pieces as the result of an explosion. One piece has twice the energy of the other pi

Butoxors [25]

M₁V₁ = m₂V₂
KE = ½mV² 
½m₁V₁² = 2*½m₂V₂² 

m₁V₁ = m₂V₂ 
½m₁V₁² = m₂V₂² 

m₁/m₂ = V₂/V₁ 

m₁/m₂ = 2V₂²/V₁² 
V₂/V₁ = √(½m₁/m₂) 

m₁/m₂ = √(½m₁/m₂) 
squaring
(m₁/m₂)² = ½m₁/m₂ 

2m₂m₁² = m₁m₂² 
divide by m₁m₂ 
2m₁ = m₂ 
m₂/m₁ = 2
hope this helps

4 0

4 years ago