SOMEONE PLS PLS
PLS HELP ME!!

give three examples of the types of materials that would be used when
building houses where their thermal conductivity would need to be
considered.


Answers

Answer 1

Answer:

wood ,clay brick ,aluminum, and copper.

Explanation:

Answer 2

Three examples of types of material that would be used when building houses where their thermal conductivity are copper, aluminum, fire brick, and carbon steel.

What is thermal conductivity?

Thermal conductivity is the rate at which heat is transferred from one object to another by conduction over a material's unit cross-section area.

Therefore, a substance's thermal conductivity will decrease as the distance between its atoms increases.

This is because a substance's molecules will move more randomly with the greater distance between them, which will lead to less efficient energy transfer. Metals have a much higher heat conductivity than liquids.

Therefore, copper, aluminum, fire brick, and carbon steel are three examples of materials whose heat conductivity would be employed for constructing homes.

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Related Questions

You want to create a space station that is 50 meters in radius. If you want it to simulate Earth's gravitation, how fast must it go?

Answers

Answer:

w = 0.196 rad / s

Explanation:

To generate an acceleration similar to that of the earth, the station's centripetal acceleration must be equal to the acceleration due to gravity.

               a_c = v² / r = w² r

               a_c = g

we substitute

               g = w² r

               w² = g / r

               w = [tex]\sqrt { \frac{g}{r} }[/tex]

       

let's calculate

               w = √9.8/50

               w = 0.196 rad / s

therefore the station must rotate at that angular velocity so that the acceleration in the outer wall is equal to the ratio of gravity

A snowboarder travels 17 m [N], 25 m [S], then 33 m [N]. Choose the correct
statement about the snowboarder's motion *
A. The snowboarder has a larger distance travelled than displacement
B. The snowboarder has a larger displacement than distance travelled
C. The snowboarder has more inertia after the 25 m trip than after the 17 m trip
D. The snowboarder has constant acceleration

Answers

The best answer to go with is b

Suppose A = B"Cm, where A has the dimensions LT, B has dimensions L²T-1, and C has dimensions LT2. Then the exponents n and have the values

Answers

Complete Question:

Suppose [tex]A = B^n C^m[/tex], where A has the dimensions LT, B has dimensions L²T⁻¹, and C has dimensions LT². Then the exponents n and m have the values

Answer:

The value of n = ¹/₅

The value of m = ³/₅

Explanation:

Given dimensions;

A = LT

B = L²T⁻¹

C = LT²

The values of n and m are calculated as follows;

[tex]LT = [L^2T^{-1}]^n[LT^2]^m\\\\L^1T^1 = [L^{2n}T^{-n}]\times [L^mT^{2m}]\\\\L^1 \times T^1 = [L^{(2n+m)}] \times [T^{(-n +2m)}]\\\\1 = 2n + m -----(1)\\\\1 = -n + 2m ----(2)\\\\from \ (1); \ m = 1-2n, \ \ substitute \ the \ value \ of \ m \ in\ (2)\\\\1= -n +2(1-2n)\\\\1 = -n + 2-4n\\\\1-2 = -5n\\\\-1 = -5n\\\\1= 5n\\\\n = \frac{1}{5} \\\\m = 1 - 2n\\\\m = 1 - 2(\frac{1}{5} )\\\\m = 1- \frac{2}{5} \\\\m = \frac{3}{5}[/tex]

please can someone please help me with this!!
i’ll give 15 points!!

Answers

Answer:

Explanation:

Time is a major factor in how much force is being applied.  so when there are crumple zones. they crumple and that takes a little longer in an impact and hence lowers the forces considerably   :)   safety first  

HELP ASAP!
1. Why do you think it is important for people to know when the tides will be high and/or low?

Answers

Many reasons. Here are a couple:

1.) Water depth for the draft of incoming ships/vessels so they do not run aground.

2.) Distance between sea level and bottom of structures such as bridges for vessels passing underneath.

Two high tides and two low tides occur during every 24-hour period. The predictability of the tides, fast movement of water during the inflow and outflow can provide a source of renewable energy to communities living along the coast.

Explain why white light splits up into the different colours when it goes through a prism

Answers

Answer:

Light splits up into different colors because of the electromagnetic spectrum which makes the light bend, wavelength, and it makes different colors by it :3

Explanation:

:3

a rail car moving at 10m/s collides with and connect to another stationary car. What is their final velocity?
Assume they have the same mass

Answers

Answer:

read this it might help some

When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater collision force. When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater momentum change.

Explanation:

What made ancient Rome special?

Answers

Answer:

Rome became the most powerful state in the world by the first century BCE through a combination of military power, political flexibility, economic expansion, and more than a bit of good luck. This expansion changed the Mediterranean world and also changed Rome itself.

Explanation:

A chemical reaction is the only way to an

A: Element

B: Pure Substance

C: Mixture

D: Solution

Answers

Answer:

B: Pure Substance

Explanation:

This is an example of a ____________ resource using _______.


A'renewable;; wind

B'nonrenewable; wind

C;renewable; electricity

D;nonrenewable;electricity

Answers

Answer:

A

Explanation:

I guess but not sure cause wind is soemthing you can get back electricity is soemthing you can't

Four resistors , R1=12ohms, R2= 15 ohms , R3= 18 ohms and R4=10 ohms are connected to 6 v battery in series what is the total resistance in the circuit?

Answers

Answer:

55 ohms

Explanation:

if it was series circuit, then you just need to add all the resistances

Discuss your theory on why the light bulbs in the combination circuit have
different brightness.

Answers

Answer:

The voltage drop across each resistance is the same as the applied one. Hence most of the supplied voltage (the electrical energy) reaches the bulb. Hence it glows brighter. Now in the case of series combination of resistors, the effective resistance of the circuit increases.

Explanation: Discuss your theory on why the light bulbs in the combination circuit have

different brightness.

how do you find the kinetic energy of an object? ​

Answers

Answer:

KE = 1/2 * m * [tex]v^{2}[/tex]

Explanation:

use the formula:

KE = 1/2 * m * [tex]v^{2}[/tex]

KE = kinetic energy in joules (J)

m = mass in kg

v = velocity in m/s

Answer:

KE=1/2mv^2

Explanation:

I hope this helps it's just the formula.

KE=1/2×mass×velocity^2

Describe the components of the universe.
3-4 sentences

Answers

Answer:

The Universe is thought to consist of three types of substance: normal matter, 'dark matter' and 'dark energy'. Normal matter consists of the atoms that make up stars, planets, human beings and every other visible object in the Universe.

Explanation:

Answer:

Hey mate....

Explanation:

This is ur answer.....

According the NASA's StarChild Website, "The universe is a vast open space which contains all of the matter and energy in existence. The universe contains all of the galaxies, nebulae, stars, and planets. The exact size of the universe is unknown. Scientists believe the universe is still expanding outward.

The Universe is thought to consist of three types of substance: normal matter, 'dark matter' and 'dark energy'. Normal matter consists of the atoms that make up stars, planets, human beings and every other visible object in the Universe.

Hope it helps u,

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Two 15 N forces in same directions are acting on an object. What is the magnitude of the net force?

Answers

Answer:

30N

Explanation:

if it is pushing the object to the left then it would be 30N left and if it is pushing the object to the right it would be 30N right

Answer: 30N

Explanation:

20 A measure of the speed and direction of an object's motion

a. velocity
b. speed.
c. momentum​

Answers

The answer is a. Velocity
Velocity= displacement over change in time

Calculate the momentum of a 1000 kg sports car traveling at 30 m/s.

Answers

Answer:

30,000 kgm/s

Explanation:

m = 1000 kg

v = 30 m/s

Plug those values into the equation:

p = mv

p = (1000 kg)(30 m/s)

p = 30,000 kgm/s

The momentum of a 1000 kg sports car traveling at 30 m/s is 30,000 kgm/s.Linear momentum = Mass x Speed.

What is the momentum?

The product of an object's mass, m, and its velocity, v, is the vector quantity known as linear momentum. It is represented by the letter "p," which is also used to denote momentum.

Mass of car = 1000 kg

Speed by which car moves = 30 m/s. The momentum of the car =?

Recall that:

Linear momentum = Mass x Speed

= 1000 kg x 30 m/s.

= 30,000 kgm/s

The sum of an object's mass (m) and velocity (v) is known as the object's linear momentum. An equation can be used to explain this relationship. Momentum is defined as the body's mass times its velocity. P = m times v, etc.

Therefore,  the momentum of a 1000 kg sports car is 30,000 kgm/s if travels at 30 m/s.

Learn more about momentum, here:

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A box moves 1000 m horizontally as a force F 2000 N is applied downward. What is the work done on the box by F during the displacement?​

Answers

Answer:

D. OJ

Explanation:

what is the correct equation for calculating kinetic energy?

1. kinetic energy = potential energy - total energy
2. kinetic energy = total energy - potential energy
3. kinetic energy = 1/2 x (total energy + potential energy)
4. kinetic energy = potential + total energy

Answers

Answer:

2. kinetic energy = total energy - potential energy

Explanation:

The total energy of a system is the addition of kinetic and potential energy of the system. Kinetic energy can be regarded as form of energy posses by an object when it's in motion

Total energy = kinetic energy + potential energy

(If we make Kinectic energy the subject of the formula, we have)

kinetic energy = total energy - potential energy

In a free body diagram all the forces are depicted as pointing _______ the central box

Answers

Answer:

There are three forces acting upon the system - the gravity force (the Earth pulls down on the 15.0 kg of mass), the normal force (the floor pushes up on the system to support its weight), and the applied force (the hand is pushing on the back part of the system).

Explanation:

Answer:

what he said

Explanation:

why can many ecosystems exit in one biome?

Answers

Answer:

Plants and animals that live in a biome must be able to live and reproduce in the conditions

Explanation:

A biome can be kind of big so the conditions in that area can be different

Flexibility training helps reduce the range of motion of your joints and muscles.
True or false

Answers

False, it should say improve

A bicycle has a momentum of 25.00 kg·m/s and a velocity of 2.5 m/s. What is the bicycle’smass?

Answers

Answer:

10 kg

Explanation:

p=ma

25=2.5m

m=25/2.5

m=10 kg

mark as brainliest plzzzzz

PLEASE HELP...How much power is done when you exert 30J of Work over 5 seconds?​

Answers

May Help:

In classical physics terms, you do work on an object when you exert a ... to do work (follow the kinetic and potential energy links for a more in ... runs twice as powerfully as the runner that finishes in 5 hours. The unit of power is joules per second or J/s when work is measured in joules and time in seconds.

The pressure at the bottom of a lake is 300 000 N/m2 more than at the surface of the lake. The lake is fresh water (density = 1000 kg/m3).

Answers

Answer:

h = 30.61 m

Explanation:

In this problem they indicate the pressure at the bottom of the lake and the density of the water, for which they must ask what is the depth of the lake.

The pressure is given by the expression

           P = [tex]P_{atm}[/tex] + rho g h

           P - P_{atm} = rho g h

       

The gauge pressure value is P- P_{atm} = 3 105 N / m²

          h = [tex]\frac{P - P_{atm}}{ \rho \ g}[/tex]

let's calculate

          h = [tex]\frac{3 \ 10^5}{1000 \ 9.8}[/tex]

          h = 30.61 m

Select the correct answer. East Asia is home to approximately what percentage of the world's population? OA. 15% OB. 50% OC. 25% OD. 30%​

Answers

Answer:

C. 25%

Explanation:

You posted in the wrong section, but 25% is closest to the UN's 22% estimate.

Help ASAP I’ll give u branliest!! This isn’t really hard

Answers

Answer:

I'm pretty sure it's mist, drizzle, droplet, and then rain.

mist, drizzle, droplet, rain

what’s the answer ???

Answers

Answer:

i cant even see it

Explanation:

When the north poles of two magnets are kept close , they will __________
attract
rotate
repel
remain unaffected

Answers

repel
repel
repel
repel

acontainer is filled whith mercury to alevel of 10m whit water to alevel of 8m and whit oil to alevel of 5m the densities oil ,water and mercury are 0.8g/cm³,1g/cm³ and 13.6g/cm³ calculate the total pressure exerted by the liquids at the base​

Answers

Answer:

1450.4 KN[tex]m^{2}[/tex]

Explanation:

Pressure = ρhg

where: ρ is the density of the liquid, h is the height and g the force of gravity.

Total pressure exerted by the liquids at the base = Pressure of oil + Pressure of water + Pressure of mercury

So that,

i. Pressure of oil = ρhg

(ρ = 0.8 g/cm³ = 800 kg/m³)

                        = 800 x 5 x 9.8

                        = 39200

Pressure of oil = 39200 N[tex]m^{2}[/tex]

ii. Pressure of water = ρhg

(ρ = 1 g/cm³ = 1000 kg/m³)

                                      = 1000 x 8 x 9.8

                                     = 78400

Pressure of water = 78400 N[tex]m^{2}[/tex]

ii. Pressure of mercury = ρhg

(ρ = 13.6 g/cm³ = 13600 kg/m³)

                      = 13600 x 10 x 9.8

                      = 1332800

Pressure of mercury = 1332800 N[tex]m^{2}[/tex]

So that,

Total pressure exerted by the liquids at the base = 39200 + 78400 + 1332800

                                               = 1450400

                                               = 1450.4 KN[tex]m^{2}[/tex]

Total pressure exerted by the liquids at the base is 1450.4 KN[tex]m^{2}[/tex].

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