A metal rod has a length of 123. cm at 200°C. At what temperature will the length be 92.6 cm if the coefficient of linear expansion of the material in the rod is 2.0 x 10-5 °C-1?

Answers

Answer 1

Answer:

[tex]\theta_{2} = 15400^0 C[/tex]

Explanation:

The formula for linear expansivity, [tex]\alpha = \frac{l_{2} - l_{1} }{l_{1} ( \theta_{2} - \theta_{1} )}[/tex]

original length, l₁ = 123 cm = 1.23 m

final length, l₁ = 92.6 cm =0.926 m

original temperature, θ₁ = 200°C

Linear expansivity, α = 2 * 10⁻⁵ °C⁻¹

Putting these values into the formula:

[tex]2 * 10^{-5} = \frac{1.23 - 0.926 }{l_{1} ( \theta_{2} -200 )}\\ \theta_{2} -200 = \frac{0.304}{2 * 10^{-5} } \\\theta_{2} = 15200 + 200\\\theta_{2} = 15400^0 C[/tex]


Related Questions

We dont got the force so i got no clue what to do

⦁ How much work is it to lift a 20 kg sack of potatoes vertically 6.5 m?

Answers

Answer:

work = 1275.3 J

Explanation:

work = (force)(distance)cosø ------- force = ma

=(mass*acceleration)(distance)cosø

=(20*9.81)(6.5)cos0

=1275.3J

nite that the angle of cosine is the difference between the angle of force and the distance. in this case, the force and the distance are in the same direction. :)

If M is 10 kg and Fa = 100N and there is no friction, what will the acceleration of M be?

Answers

Answer:

10m/s^2

Explanation:

Newton's second law:

F=ma

100=10×a

a=10m/s^2

Two types of emission spectra line spectra and continuous spectra
True
False

Answers

A continuous spectrum is the emission of a continuous range of frequencies of electromagnetic radiation. An emission spectrum consists of coloured lines produced when an electron jumps from a higher energy level to a lower energy level.

The acceleration of gravity means that for each second that passes, falling
objects move 9.8 meters.
A. True
B. False

Answers

Answer:

B.

Explanation:

There are many factors that go into the speed that an object drops. For example, aerodynamics, weight, and other things.

Which nanotechnology product would most likely help the
electronics company?
biomaterials
carbon wires
quantum dots
OLEDs

Answers

Answer: OLEDs

Explanation:

The nanotechnology uses the surface of the carbon materials to generate the electricity. The evaporation of water on the surface of carbon materials helps in generation of electrical energy due to generation of thermal energy.

OLEDs can be defined as solid-state devices that comprises of organic molecules like carbon that will create electricity by exposing a surface for generation of thermal energy.

A car slows down from 27.7 m/s
to 10.9 m/s in 2.37 s.
What is its acceleration?

Answers

Answer:

a = (Vf - Vi) / t = (10.9 - 27.7) / 2.37 = -16.8 / 2.37 = -7.09 m/s/s

negative means slowing down

Explanation:

Which of the following statements about developing a personal fitness program is NOT true?
A When developing a personal fitness program, it is important to implement strategies that will help
maintain the program as well as give it a successful start
B. Personal factors such as age, health concerns, and likes are important to consider when developing
a personal fitness program
C. The starting skill level of the physical activities included in a personal fitness program should be
determined from other individuals' fitness programs
D. The FITT principle should be used when developing a personal fitness program,
Please select the best answer from the choices provided
A
B
Save and Exit
Next

Answers

Answer:

C

Explanation:

The starting skill level of the physical activities included in a personal fitness program should be determined from other individuals' fitness programs is a statement which is not true. Everyone starts their personal fitness journey at a different level which should be regarded . A fitness test should be taken to determine where an individual should start their new lifestyle.

Answer:

C. I got it right :)

Explanation:

How far can you get away from your little brother with a paintball marker if you can travel at 3 m/s and you have 15s before he sees you?

Answers

Answer:

45 meters

3 (m/s) x 15 (s) = 45 meters

Which of the following is a conversion from light energy to chemical energy?
a. turning on a stove to heat dinner
b. growing an apple tree
c. turning on a lamp
d. Turning on a blender

Answers

Answer:

A

Explanation:

turning on a stove to heat dinner because it undergoes a chemical reaction to transform into other substance

Growing up a tree is a conversion from light energy to chemical energy.

What is law of energy conservation?

Energy can neither be created nor be destroyed , it gets only transferred from one form to another.

What is photosynthesis?The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.In simple words by the process of photosynthesis a tree makes food for itself.

What happens when a tree grows?Tree makes food by absorbing the sunlight.The energy of the sunlight is used in making of ATPs in trees.ATP ( Adenosine triphosphate ) is used in various operations in trees.So, the sunlight is light energy which get converted into ATPs , which is chemical energy.

Thus, Growing up a tree is a conversion from light energy to chemical energy.

Learn more about Photosynthesis here -

https://brainly.com/question/19160081

#SPJ2

WILL NAME BRAINLIEST!!!!!!
Match each word with its definition. Match the items in the left column to the items in the right column. 1. Nucleus of a helium atom 2. Electron ejected by a nucleus 3. Electromagnetic radiation from a nucleus 4. all emissions from a nucleus 5. Nuclear particle that has no charge 6. Nuclear particle that has a positive charge 7. One of several different nuclei of an element 8. Equivalent to the mass discrepancy in a nucleus 9. Measure of a radioactive materials lifetime 10. Unit of nuclear mass

amu
half-life
beta particle
binding energy
proton
radiation
isotope
neutron
gamma ray
alpha particle

Answers

Answer:

Please see the answers in the picture attached below.

Explanation:

Hope this answer can help you. Have a nice day!

Diffraction of white light with a single slit produces bright lines of different colors.What is the color of the central image?

Answers

Answer:

white

Explanation:

This experiment causes lines of different colors because the constructive interference depends on the wavelength, so for different wavelength, the position of the maximum will be different.

Now, in diffraction fo a single slit we always have a central maximum (for all the colors)

This means that after the diffraction, we will have that all the colors have a maximum in the center, which will produce white light again, then the color of the central image is white

How old does an individual need to be in the United states to purchase any tobacco products

Answers

Answer: 18 years of age

Explanation:

A charged particle of 5.1 nC and another with 2.6 nC are separated by a distance of 5.5 m. What is the electric potential energy between the particles?

Answers

Answer:

The electric potential energy between the particles is 2.167 x 10⁻J

Explanation:

Given;

a charged particle, q₁ = 5.1 nC

another charged particle, q₂ = 2.6 nC

distance between the charged particle, r = 5.5 m

The electric potential energy between the charged particles is calculated as;

[tex]U_E = \frac{kq_1q_2}{r}[/tex]

where;

[tex]U_E[/tex] is the electric potential energy between the particles

k is coulomb's constant = 8.99 x 10⁹ Nm²/c²

Substitute the given values and solve for electric potential energy;

[tex]U_E = \frac{kq_1q_2}{r} = \frac{8.99*10^{9}*5.1*10^{-9}*2.6*10^{-9}}{5.5} \\\\U_E = 2.167 *10^{-8} \ J[/tex]

Therefore, the electric potential energy between the particles is 2.167 x 10⁻J

Which of the following items are NOT used to create an electric motor?

A. Magnets
B. Electric Current
C. Turbines
D. Copper Wire

Answers

Answer:

Option C, Turbines

Explanation:

An electric motor comprise of following components-

a) Magnets

b) Electric wire or solenoid

c) Motor shaft

Turbine is a component of power producing plant that is essential to rotate the shaft of the motor. Once the shaft is rotated, the electric coil placed between the magnets is also rotated. Rotating coil cut the magnetic fields to induce emf and hence electric current is produced from mechanical work (i.e rotation).

Hence, option C is correct

What is the critical angle for glass when the refractive index is 1.45

Answers

Answer:43.6°

Explanation:

Refractive index=n=1.45

Critical angle=c

n=1/sinc

1.45=1/sinc

Cross multiply

1.45sinc=1

Divide both sides by 1.45

(1.45sinc)/1.45=1/1.45

sinc=0.6897

c=sin(inverse)(0.6897)

c=43.6°

Critical angle is 43.6°

Oliver builds a circuit connecting a light bulb to a battery with wires, leaving a gap in one of the wires. He places several objects across the gap to close the loop. He wants to see which objects allow electricity to flow and turn on the light bulb. Why do some materials allow electricity to flow through while others do not?



A. Electricity will flow if the atoms in the material are bound tightly to each other.

B. Electricity will flow if the atoms in the material are bound loosely to each other.

C. Electricity will flow if the electrons are bound tightly to their atoms in the material.

D. Electricity will flow if the electrons are bound loosely to their atoms in the material.

Answers

Answer:

D. Electricity will flow if the electrons are bound loosely to their atoms in the material.

Explanation:

The continuous flow of charges is known as electricity (current). The flow of these charges are due to free or mobile electron within the atoms of the conductors. The materials which will allow current to pass through them, must have free or mobile electrons which are loosely bound to their atoms.

Thus, the correction for this question is "D"

D. Electricity will flow if the electrons are bound loosely to their atoms in the material.

Which change of state is shown in the model?

condensation
evaporation
sublimation
deposition

Answers

Answer:

The correct answer to the following question will be Option C (sublimation).

Explanation:

Sublimation seems to be the process in which a substance or a solid changes its sequence from solid to the gaseous without moving via the form of water.From either the framework or method, we have because the category of phase change seems to be sublimation since there is a material altered to something like the gaseous state throughout the solid.

Other options aren't connected to the offer scenario. Therefore the answer to the above is the correct one.

Whats the voltage supplied by the battery if the resistance is 480 Ohms?

Answers

Its 1,920 V. If V=IR (Voltage= Current x Resistance) then V= (4)(480) which is equal to 1920V.

if the 50 kg objects slows down to a velocity of 1 m/s how much kinetic energy does it have?

Answers

Answer: 25

Explanation:

The kinetic energy of the object moving at the given mass and velocity is 25 J.

The given parameters;

mass of the object, m = 50 kgvelocity of the object, v = 1 m/s

The kinetic energy of the object moving at the given mass and velocity is calculated as follows;

K.E = ¹/₂mv²

K.E = ¹/₂ x 50 x 1²

K.E = 25 J

Thus, the kinetic energy of the object moving at the given mass and velocity is 25 J.

Learn more here:https://brainly.com/question/23503524

what type of stars can collapse in a supernova explosion and become neutron stars

Answers

Answer:

red supergiants can

8 N to the Lefr and 4 N to the right find the net force is this balanced

Answers

Answer:

4N to the left. No it is not balanced.

Explanation:

8 -4 = 4 N of force

Balanced would be if they equaled zero, so 8 to the left and 8 to the right

why are fuels from crude oil so widely used for transportation

Answers

because it was a better oil

You arrive in my class 45 seconds after leaving math which is 90 meters away. How fast did you travel?

Answers

Answer:

2m/s

Explanation:

speed = distance÷time

speed =90÷45=2m/s

terms used to measure motion

Answers

Answer:

velocity term

Explanation:

Answer:velocity term

Explanation:

How did Confucius believe that kings should behave? (Site 1) HURRY!!!!!​

Answers

Answer:

Confucius believe that kings should behave RIGHTLY

Explanation:

CONFUCIUS  believe that kings are supposed to behave rightly and rule justly ( according to the codes of ethics )  of the land and also live a right and just life.

Confucianism is an ancient philosophy established as far back as the fifth century by Confucius it's main aim was to guide the ancient and modern systems of government in the whole of Asia. it is called a religion by some while some call it a code of ethics and way of leadership

Answer:

CONFUCIUS  believe that kings are supposed to behave rightly and rule justly ( according to the codes of ethics )  of the land and also live a right and just life.

Confucianism is an ancient philosophy established as far back as the fifth century by Confucius it's main aim was to guide the ancient and modern systems of government in the whole of Asia. it is called a religion by some while some call it a code of ethics and way of leadership

Explanation:

A force of 1000 Newtons is used to push a box on a flat floor. It accelerated at a rate of 5 m/s2. What is the mass of the wagon?

Answers

Answer:

67.56kg

Explanation:

Fapp+mg = ma

Fapp= applied force

mg = reactional force

g = acceleration due to gravity

Where g = 9.8m/s^2 a= 5 m/s2, Fapp= 1000N.

1000N = ma + mg

1000N = m( a+g )

1000N = m ( 5+9.8)

1000N = m×14.8

m = 1000÷14.8

m = 67.56kg.

Hence the mass of the wagon will be 67.56kg

Ski lift carry people along 150 m cable up the side of a mountain. Riders are lifted a total of 75 m in elevation. What is the ideal mechanical advantage of the ski lift?

Answers

Ideal Mechanical Advantage (IMA) can be found by using the formula:

IMA = ID/OD

ID = Input Distance

OD = Output Distance

In the question, we are given:

ID = 150

OD = 75

Now, solve the expression with what we have.

IMA = 150/75

IMA = 2

Therefore, the IMA is 2.

Best of Luck!

Una caja de 5.0kg de masa se acelera desde el reposo a través del piso mediante una fuerza a una tasa de 2.0 /s2 durante 7.0s encuentre el trabajo realizado sobre la caja

Answers

Responder:

490 julios

Explicación:

Se dice que el trabajo se realiza cuando una fuerza aplicada a un objeto hace que el objeto se mueva a través de una distancia. El trabajo realizado por un cuerpo se expresa mediante la fórmula;

Workdone = Fuerza * Distancia

Como Fuerza = masa * aceleración,

Workdone = masa * aceleración * distancia

Masa dada = 5.0kg, aceleración = 2.0m / s² d =?

Para obtener d, usaremos una de las leyes del movimiento,

d = ut + 1 / 2at²

u = 0 (ya que el cuerpo acelera desde el reposo) yt = 7.0s

d = 0 + 1/2 (2) (7) ²

d = 49m

Workdone = 5 * 2 * 49

Workdone = 490 Julios

Em um centro de distribuição uma empilhadeira carrega uma caixa de 1000kg até o caminhão responsável pelo transporte desta carga. Partindo do repouso a empilhadeira precisa percorrer uma certa distância 8,4 m para atingir a sua velocidade máxima de operação 10 k/h. Determine a força média necessária para acelerar essa carga.

Answers

Answer:

F = 592238.09 N

Explanation:

To find the mean force you first calculate the acceleration by using the following kinematic equation:

[tex]v^2=v_o^2+2ax\\\\v_o=0m/s\\\\v=10km/h\\\\x=8.4m\\\\[/tex]

you do "a" the subject of the equation and replace the values of the other parameters:

[tex]a=\frac{v^2}{2x}=\frac{10000m/s}{2(8.4m)}=595.23\frac{m}{s^2}[/tex]

next, the force, by using the second Newton law is:

[tex]F=ma=(1000kg)(595.23\frac{m}{s^2})=595238.09\ N[/tex]

hence, the force is 592238.09 N

- - - - - - - - - - - - - - - - - - - - - - - - - - -

TRANSLATION:

Para encontrar a força média, primeiro calcule a aceleração usando a seguinte equação cinemática:

você faz "a" o assunto da equação e substitui os valores dos outros parâmetros:

Em seguida, a força, usando a segunda lei de Newton, é:

portanto, a força é 592238.09 N

A 6.0 cm candle is 30.0 cm from a concave mirror that has a focal length
of 11 cm. What is the distance of the image from the mirror?
7 points
0
.09 cm
17 cm
.06 cm
O
20 cm

Answers

Answer:

23 cm from the mirror

Explanation:

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