Why are some national government units indirectly involved in the tourism industry?

Step-by-step explanation:

1. 346.5
2. 1039.6
3. 1732.5
4. 2425.5
5. 3118.5

Answer:

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Answer:

Everyone's importance in the family is weighed. Important family decisions, however, should be made by the parents with the help of the grandparents.

Explanation:

When a kid has not attained the legal age of majority, is unable to make health decisions independently, or requires support to grant consent or assent, health regulations and policies often demand parent, legal guardian, or surrogate decision-maker involvement in treatment decisions.

• Giving children options is crucial because it allows them to develop critical thinking and decision-making skills.
• It also helps children gain confidence and a better awareness of the consequences of their choices.
• They benefit from the presence of their parents, who can teach them how to make good decisions.
• They would suffer significantly if they do not learn decision-making skills while they are still young.
• Parents should let their teenagers make decisions for themselves in order to see what the world is like in their hands and to see what is truly out there in the world.

Answer:

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Class 11

>>Physics

>>Thermal Properties of Matter

>>Thermal Expansion

>>Two rods of the same length, have radii

Question

Bookmark

Two rods of the same length, have radii in the ratio 3:4. Their densities are respectively 8000 and 9000kg/m

3

. Their specific heats are in the ratio of 2:3.When the same amount of heat is supplied to both,the changes in their lengths are in the ratio. (If their linear coefficients are in the ratio 5:6)

Medium

Solution

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Correct option is B)

Heat supplied: Q=msΔθ where m is the mass of the rod, , s is the specific heat of the rod and Δθ is the temp difference.

Δl=lαΔθ where α is the co-efficient of linear expansion and l is the length before being heated.

m=πr

2

lρ

Combining the above relations

Q=πr

2

lρsΔθ

Q

1

=Q

2

given

∴πr

1

2

l

1

ρ

1

s

1

Δθ

1

=∴πr

2

2

l

2

ρ

2

s

2

Δθ

2

∴πr

1

2

l

1

ρ

1

s

1

(

l

1

α

1

Δl

1

)=πr

2

2

l

2

ρ

2

s

2

(

l

1

α

2

Δl

2

)

Given l

1

=l

2

∴

Δl

2

Δl

1

=

r

1

2

ρ

1

s

1

r

2

2

ρ

2

s

2

α

2

α

1

=(

3

4

)

2

8000

9000

2

3

6

5

=

2

5

search-icon-header

Search for questions & chapters

search-icon-image

Class 11

>>Physics

>>Thermal Properties of Matter

>>Thermal Expansion

>>Two rods of the same length, have radii

Question

Bookmark

Two rods of the same length, have radii in the ratio 3:4. Their densities are respectively 8000 and 9000kg/m

3

. Their specific heats are in the ratio of 2:3.When the same amount of heat is supplied to both,the changes in their lengths are in the ratio. (If their linear coefficients are in the ratio 5:6)

Medium

Solution

verified

Verified by Toppr

Correct option is B)

Heat supplied: Q=msΔθ where m is the mass of the rod, , s is the specific heat of the rod and Δθ is the temp difference.

Δl=lαΔθ where α is the co-efficient of linear expansion and l is the length before being heated.

m=πr

2

lρ

Combining the above relations

Q=πr

2

lρsΔθ

Q

1

=Q

2

given

∴πr

1

2

l

1

ρ

1

s

1

Δθ

1

=∴πr

2

2

l

2

ρ

2

s

2

Δθ

2

∴πr

1

2

l

1

ρ

1

s

1

(

l

1

α

1

Δl

1

)=πr

2

2

l

2

ρ

2

s

2

(

l

1

α

2

Δl

2

)

Given l

1

=l

2

∴

Δl

2

Δl

1

=

r

1

2

ρ

1

s

1

r

2

2

ρ

2

s

2

α

2

α

1

=(

3

4

)

2

8000

9000

2

3

6

5

=

2

5

Answer:

Answer:

mirror is an object that reflects an image. Light that bounces off a mirror will show an image of whatever is in front of it, when focused through the lens of the eye or a camera. Mirrors reverse the direction of the image in an equal yet opposite angle from which the light shines upon it.

Explanation:

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