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NeX [460]
2 years ago
9

Transfer of heat through conduction can occur in which of the following?

Physics
2 answers:
lianna [129]2 years ago
8 0

Answer:d I think

Explanation:

Sav [38]2 years ago
8 0

Answer:

<em><u>D:All of the </u></em><em><u>above</u></em>

Explanation:

<em><u>Solid </u></em><em><u>is </u></em><em><u>the </u></em><em><u>best </u></em><em><u>in </u></em><em><u>conduction</u></em><em><u> </u></em><em><u>whereas</u></em><em><u> </u></em><em><u>liquids</u></em><em><u> and</u></em><em><u> gases</u></em><em><u> are</u></em><em><u> </u></em><em><u>poor</u></em><em><u> </u></em><em><u>in </u></em><em><u>conduction</u></em>

<em><u>Hope </u></em><em><u>this </u></em><em><u>helps</u></em>

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If a farsighted person has a near point that is 0.600 m from the eye, what is the focal length f2 of the contact lenses that the
ra1l [238]

Answer:

f = 0.84 m

Explanation:

given,

near point of the distance from eye(d_i) = 0.60 m

distance he can read (d_o)= 0.350 m

focal length of the contact lens = ?

now,

Using lens formula

\dfrac{1}{f} = \dfrac{1}{d_0} + \dfrac{1}{d_i}

\dfrac{1}{f} = \dfrac{1}{0.35} + \dfrac{1}{-0.6}

\dfrac{1}{f} = 1.19

f = \dfrac{1}{1.19}

f = 0.84 m

Hence, The focal length of the contact lens that person needed is equal to

f = 0.84 m

7 0
3 years ago
On a part time job you are asked to bring a cylindrical iron rod of density 7800 kg/m^3, length 81.2 cm and diameter 2.75 cm fro
Hitman42 [59]

Answer:

3.76188 kg

36.9040428 N

Yes

Explanation:

g = Acceleration due to gravity = 9.81 m/s²

L = Length of rod = 81.2 cm

d = Diameter of rod = 2.75 cm

r = Radius = \frac{d}{2}=\frac{2.75}{2}=1.375\ cm

A = Area of the cylinder =\pi r^2

v = Volume = L\times A

m = Mass

\rho = Density of rod = 7800 kg/m³

Density

\rho=\dfrac{m}{v}\\\Rightarrow m=\rho\times v\\\Rightarrow m=\rho\times L\times A\\\Rightarrow m=7800\times 0.812\times \pi\times 0.01375^2\\\Rightarrow m=3.76188\ kg

The mass of the rod is 3.76188 kg.

As the the mass of the rod is 3.76188 kg I will be able to carry the rod.

Weight

W=mg\\\Rightarrow W=3.76188\times 9.81\\\Rightarrow W=36.9040428\ N

The weight of the rod is 36.9040428 N

7 0
2 years ago
when striking, the pike, a predatory fish, can accelerate from rest to a speed of 4.0 m/sm/s in 0.15 ss
Alina [70]

The distance covered will  be 0.301m.

firstly we will new to calculate acceleration (a).

we can do so using newtons first law of motion.

v=u + a × t

where

a is the acceleration

t is the time

from here we get

a=(v-u)/t

a=(4-0)/0.15

a=26.67m/s²

using newtons second law of motion

s=u.t+1/2at²

where s is distance travelled in t seconds.

we get,

s=0.301m

learn more about newtons law of motion here:

brainly.com/question/129361

#SPJ4

6 0
1 year ago
Which two statements about composite materials are true?
Lostsunrise [7]

Answer:

Here down below is 3 things true about composite materials

Explanation:

-They’re made up of more than one substance.

-They have the same or similar properties as the materials used to make them.

-They’re always made of metal.

-They’re readily available in nature.

4 0
2 years ago
How do forest fires affect the Earth's atmosphere?
netineya [11]

It is B because the other ones are good.

5 0
2 years ago
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