which property of substances help to make a thermometer?
I NEED HELP.

Answers

Answer 1

Answer:

Mercury

Explanation:

Mercury streches when it is hot so that is why it goes up when the temperature is higher


Related Questions

The acceleration due to gravity on the Moon is less than the acceleration due to gravity on the Earth. Which of the following is true about the mass and weight of an astronaut on the Moon's surface, compared to Earth?
(A) Mass is less, weight is the same.
(B) Mass is the same, weight is less.
(C) Both mass and weight are less.
(D) Both mass and weight are the same.
(E) Mass is more, weight is less.

Answers

I think it’s B , because you body mass stays the same regardless of the change in location, but weight changes due to gravity:

Answer:

(B) Mass is the same, weight is less.

Explanation:

Just took test

describe what factors can make it difficult to reintroduce captive animals into their natural habitats.

Answers

Answer:

Captive animals are animals that are maintained by people in an enclosed place not allowing them to be free. There are several factors that make it difficult to reintroduce them to their natural habitats like:

-Captive animals don't learn the necessary skills to survive in their natural habitats like hunting skills.

-They are too used to have contact with people which makes them vulnerable to hunters.

-Sometimes these animals are not able to integrate with a wild population.

-It has been found that some captive animals are more susceptible to diseases.

A helicopter travels west at 80 mph. It is moving above a car traveling on a highway at 80 mph. Given this information, you can determine that the helicopter and car are traveling ____.

Select one:

a. in the same direction

b. in different directions

c. at the same speed

d. at the same velocity

Answers

Answer:

d. at the same velocity

Explanation:

I will assume the car is also travelling westward because it was stated that the helicopter was moving above the car. In that case, it depends where the observer is. If the observer is in the car, the helicopter would look like it is standing still ( because both objects have the same velocity). If the observer is on the side of the road, both objects would be travelling at the same velocity. Also recall that, velocity is a vector quantity; it is direction-aware. Velocity is the rate at which the position changes but speed is the rate at which object covers distance and it is not direction wise. Hence velocity is the best option.

Answer:

C. At the same speed

Explanation:

I just took the exam and got the answer correct

can someone help m e

Answers

Answer:

A.when the distance is very close from the source

Explanation:

Answerwhen the distance is very close from the source

Explanation: A

The direction of a vector that points somewhere between due north and due
east is measured in
A. centimeters
B. degrees
C. hours
D. miles

Answers

Answer: B

Degree

Explanation:

The direction of vectors are always measured in angles starting from the north. That is, in an anticlockwise direction. But the unit of angle is degree. Therefore, the direction of a vector that points somewhere between due north and due east is measured in degree.

Answer:degrees

Explanation:

What area specializes in the identification and examination of skeletal remains?

Answers

forensic anthropology

What is the momentum of a man of mass 10kg when he walks with a uniform velocity of 2m/s.

(point stealers will be reported so pls dont do it)​

Answers

Answer:

[tex]Momentum(p) = 20kgm/s[/tex]

Explanation:

Given

Mass = 10kg

Velocity = 2m/s

Required

Calculate the momentum of the man

Momentum is calculated as thus

[tex]Momentum(p) = Mass(m) * Velocity(v)[/tex]

or

[tex]p = mv[/tex]

So; to solve this question; we simply substitute 10kg for mass and 2m/s for velocity in the above formula;

The formula becomes

[tex]Momentum(p) = 10kg * 2m/s[/tex]

[tex]Momentum(p) = 10 * 2 * kg * m/s[/tex]

[tex]Momentum(p) = 20kgm/s[/tex]

Hence, the momentum of the man is [tex]20kgm/s[/tex]

7. How does friction affect the kinetic energy of an object?

Answers

Answer:

Friction is a resistive force to motion. When two bodies move against each other some of the kinetic energy is converted to heat energy due to friction. This reduces the total kinetic energy in the system. ... Mechanical energy is reduced due to friction and converted to heat.

Explanation:

Kinetic friction does oppose the relative motion of two surfaces. If the one of these surfaces is stationary, then it will tend to slow down the moving object.

I am literally so confused on what the question is asking halp :(

Answers

Answer: B

Explanation: Distance/Time but if u want it easier its Velocity=Distance/Time or (Final Velocity -Starting Velocity)/Time

A wave is traveling from one medium to another.If the wave is partially transmitted an partially reflected from the boundary,what will happen to the amplitude of the reflected wave?

Answers

Answer: the answer is C

Explanation:

A circuit has a voltage drop of 12 V across a 30 2 resistor that carries a
current of 0.8 A. How much power is used by the resistor? Use P = VI.
A. 360 W
B. 12W
C. 9.6 W
D. 24 W

Answers

Answer:

C

Explanation:

V=12v

I=0.8A

P=VI

=(12)(0.8)

=9.6W

Answer:

9.6

Explanation:

A student dips a strip of metal into a liquid. Which is evidence that only a physical change has occurred?

Answers

Answer:

not sure if this is correct but it is what i know

The metal bends more easily. The metal changes color. The metal gives off light. The metal gives off heat.

Explanation:

Select the smallest value from the choices below. (A) 15 x 10-3 (B) 0.15 x 100 (C) 0.00015 x 103 (D) 150 x 10-3 (E) 0.00000015 x 106

Answers

Answer:

E

Explanation:

Plug all of them into a graphing calculator and you will see that the last one is the smallest of them all

Answer:

E

Explanation:

Just use comon sense you will get the answer (No offense)

Which of the following is NOT a vector quantity?
(A) Acceleration
(B) Average velocity
(C) Linear momentum
(D) Potential energy
(E) Force

Answers

Answer:

D

Explanation:

Acceleration has both magnitude and direction. because velocity is vector quantity

average velocity is vector

linear momentum = mass× velocity

therefore it's also vector

force = mass× acceleration

acceleration is vector therefore force also vector

potential energy= mgh

energy in any form is scaler quantity therefore potential energy too is a scaler quantity.

The mean diameter of the Earth is 12.76 x 103 km. What is the surface area of the Earth in m2 ?
(A) 4.01 x 107
(B) 5.12 x 1014
(C) 1.09 x 1021
(D) 1.68 x 109
(E) 2.05 x 1015

Answers

B because u multiparty Get them and then you add both of them by the power of three

Answer:

The Answer is B

Explanation:

Hope this Helps :D

What is a good analogy for potential energy in a circuit?

Answers

Answer: find the answer in the explanation

Explanation: The potential energy in a circuit between two points is the workdone in taking units positive charge from one point to the other in the circuit. Its S.I unit is Joule.

Because voltage of a battery or cell in a circuit is the potential energy difference across its terminal

The potential energy difference between two points is one volt, if the workdone in taking one Coulomb of positive charge from one point to the other is one Joule.

hi:) is question 6 correct?

Answers

-- When you see the words "uniform speed", that means the car's speed is not changing.  

-- Right under those words in the picture, there's a note to remind you that "uniform speed" also means "acceleration is zero".

-- The whole key to this question is to find out if you remember that acceleration and net force always go together.  

.==> If there's net force, then there's acceleration.

.==> If there's acceleration, then there's net force.  

.==> If there's NO net force then there's NO acceleration.

.==> If there's no acceleration, then there's no net force.

-- In this picture, there's no acceleration, so there's no net force.

-- The driving force on the car is 2000N forward.

-- But the car's speed is not changing, so the net force on the car must be zero.

-- So that 'resisting' force pulling the car backwards must be 2000N. Then the net force on the car adds up to zero.

-- If the resisting force pulling the car backwards is not zero, then the net force on the car would not be zero, and the car's speed would be changing.

Click on the boxes below to indicate the number of electrons or protons in each labeled position for a zinc atom (z=30, a=65). Please carefully note the specific information requested for the nucleus by the letter designation.

Answers

Answer:

A 35

B 2

C 8

D 18

E 2

Explanation:

The number of electrons in the positions of the Zn atom, A, B, C, D and E are 30, 2, 8, 18 and 2 respectively.

What is meant by electronic configuration ?

The arrangement of electrons within the orbitals of an atom is known as its electronic configuration.

Here,

The atomic number, which is equal to the number of protons in every neutral atom, is made up of a constant number of electrons in each neutral atom.

The atomic number of an atom is represented by the letter Z.

The mass number of an atom is the sum of the number of protons and neutrons, which are together known as the nucleons, within the nucleus. It is represented by the letter A.

The atomic number of Zinc is given,

Z = 30

From the figure, the electronic configuration can be represented as,

A = 30

which is the total number of electrons in Zn atom.

B = 2

which is the innermost orbital.

C = 8

D = 18

E = 2

Hence,

The number of electrons in the positions of the Zn atom, A, B, C, D and E are 30, 2, 8, 18 and 2 respectively.

To learn more about electronic configuration, click:

https://brainly.com/question/29757010

#SPJ3

How much blood does the average adult have

Answers

The average adult has about 1.2-1.5 gallons of blood in their bodies.
An average adult has about 1.2 to 1.5 (4,500 to 5,700 mL) gallons of blood in their body.

Why is a device never 100% efficient? *


a) Mechanical Advantage

b) Work

c) Friction

d) Speed Ratio


brainliest for best answer, asap plz
for science lovers!!

Answers

I think it’s c, friction
I’m not sure tho

If the billing cycle length for a credit card is one calendar month, which of the
following months will result in the greatest periodic interest rate?
O A. December
B. June
C. April
!!!2O D. September​

Answers

Answer: A.) December

Explanation:

December has the highest number of days in the options given above, with 31 days compared to the others with 30 days within a calendar month. The billing cycle is used to refer to a time interval between the end and the next billing or statement date. In the scenario above, the billing cycle length is monthly, meaning the periodic interest will be paid over a 31 day span time before thre beginning of another cycle.

For example, if periodic interest is $1 per day, this amount totals ($1 × 31) in december compared to the ($1 × 30) Interest in the June, April and September billing cycle.


What caused the mistake that led to the destruction of the Mar's rover?

Answers

Answer:

Metric Math Mistake Muffed Mars Meteorology Mission. 1999: A disaster investigation board reports that NASA's Mars Climate Orbiter burned up in the Martian atmosphere because engineers failed to convert units from English to metric

Explanation:

hope this helps =)

What is the mass of an object that has a weight of 80.0 N?

Answers

Explanation:

SUPONIENDO QUE LA ACELERACIÓN DE LA GRAVEDAD ES [tex]9.80 m/s^{2}[/tex]

USANDO LA SEGUNDA LEY DE NEWTON:

m = 80.0 N/[tex]9.80 m/s^{2}[/tex] = 8.16 kg

Answer:

8kg

Explanation:

using the formula Force(F)=mass(m)×acceleration(a),

since we are finding the mass of the object,we will make m the subject by dividing both sides by a.

you will now get m= f/a

the acceleration on Earth is usually 10m/s

m= 80/10

m= 8/1 which is also 8kg

Remembering the Battle of Bunker Hill what did general Howe and his troops do

Answers

Answer:

General Howe and the British regrouped after losing the hill.

Explanation:

British forces marched to Breed's Hill on 17 June under the order of Major General William Howe. When the British Army marched in waves toward the Americans, Colonel William Prescott issued orders to avoid the fire until British troops came to clear sight in an attempt to protect the dwindling supply of ammunition to the Americans. Many British soldiers have been killed or maimed; the remainder has withdrawn down the hill. In a second wave, the British stormed the hill once again but met with the same fate. So they withdrew again, suffering a large number of casualties.  Eventually the British took the hill in the third attempt but at a great cost of casualties.

Please help and show workings.

Answers

Effective resistance = 2+1.5 = 3.5 ohms

Current in the circuit = 1.2 A

Lost volts in the battery = 1.8V

Current in one of the 3 ohms resistors = 0.6 A

I hope it helps

A group of students gather for some fun during their summer break from school. Kendall and Jacoby have a water balloon fight during one of those “lazy” days of summer.

Marie, Gary, and Lois remember a video about work that their science teacher, Ms. Lewis, showed them before they left for vacation.



Marie says: “If Kendall throws a water balloon at Jacoby, there is no work being done. It’s just boys being boys.”



Gary says: “If Kendall throws a water balloon at Jacoby, there is work being done by Jacoby because he has to run.”



Lois says: “If Kendall throws a water balloon at Jacoby, there is work being done because Kendall had to exert a force that made the water balloon travel a certain distance to hit Jacoby.”



Which one of them is correct and why? Answer in complete sentences! You can type on this document and turn in.



Answers

Answer:

lois is right because throwing the water balloon is exerting a force running is not

1. Of the following, the one that is not an example of a suspension is
a. Milk
b. Milk of magnesia
c. Sand in water
d. Sugar in water


2. The word used to represent a chemical reaction is a/an
a. Atom
b. Formula
c. Equation
d. Symbol


3. When two similarly charged objects are brought close together, they
a. Repel each other
b. Have no effect on each other
c. Stick to each other
d. Attract each other


4. An element common to all acids is
a. Chlorine
b. Hydrogen
c. Nitrogen
d. Oxygen


5. Atoms of the same element that differ slightly in mass are called
a. Ions
b. Isotopes
c. Neutrons
d. Positrons


6. In general, salts
a. Contain hydroxide ions
b. Contain hydrogen ions
c. Are ionic compounds
d. Turn blue litmus red.


7. A dye used to test the acidity of a substance is
a. Litmus
b. Magnesium sulfate
c. Sodium chloride
d. Sodium hydroxide


8. The central portion of an atom is called the
a. Electron
b. Nucleus
c. Ring
d. Shell


9. Sugar is poured into a glass of water and stirred. In this example the sugar is the
a. Solution
b. Solvent
c. Solute
d. Alcohol


10. Which of the following is characterized by a sour taste?
a. Bases
b. Acids
c. Salts
d. Compounds


11. Which of the following is characterized by a bitter taste and turn lithmus blue?
a. Bases
b. Acids
c. Compounds
d. Elements


12. The force of gravity on an object is called
a. Density
b. Mass
c. Volume
d. Weight


13. The liquid referred to as the “universal solvent” is
a. Alcohol.
b. Benzene.
c. Oil.
d. Water.


14. A statement that proposes a cause-and-effect relationship between two variables is called:
a. Conclusion.
b. Fair test.
c. Hypothesis.
d. Theory


15. Any substance that has mass and occupies space is called
a. A gas
b. A liquid
c. Matter
d. A solid


16. When the numbers of electrons and protons in a sample of matter are equal, the matter is
a. Insulated.
b. Negatively charged.
c. Neutral.
d. Positively charged.


17. Which of the following is most important when judging the quality of a scientific theory?
a. The quality and reliability of data that support the theory
b. The amount of detail provided in the theory
c. How recently the theory has been published
d. The respectability of the scientists setting forth the theory


18. Substances that cannot be decomposed to any simpler substances are called
a. Compounds.
b. Elements.
c. Mixtures.
d. None of the above.


19. When the air in a bell jar containing a ringing bell is removed, the sound decreases because
a. The removal of the air prevents electric current from flowing
b. Sound cannot travel through the air
c. Sound cannot travel through glass
d. Sound cannot travel in a vacuum


20. An element common to all acids is
a. Chlorine.
b. Oxygen.
c. Nitrogen.
d. Hydrogen.


21. The amount of matter in an object is best expressed by its
a. Density
b. Mass
c. Volume
d. Weight


22. A substance that increases the rate of a reaction is a
a. Liquid
b. Gas
c. Catalyst
d. Solid

Answers

Answer: 1. C

Explanation: 2. C

Curtains over a window are an example of _____. A. transmission B. a medium for light C. how light waves do not require a medium D. a substance that does not transmit a wave

Answers

Answer:

C

Explanation:

we know that light doesn't need a medium through which to travel because the speed of light is experimentally constant: independent of the movement of the source or detector or the direction in which it travels.

Heat always flows from a what place to a what place

Answers

Answer:

Heat is always the transfer of energy from an object at a higher temperature to an object at a lower temperature.

Explanation:

Answer:

Heat flows from high temperature to low temperature

Explanation:

the answer also may vary it can also be the heat flows from a warmer to colder place

hope this helped!

helpp me pleassee....

Answers

Answer:

The fundamental wavelength of the vibrating string is 1.7 m.

Explanation:

We have,

Velocity of wave on a guitar string is 344 m/s

Length of the guitar string is 85 cm or 0.85 m

It is required to find the fundamental wavelength of the vibrating string. The fundamental frequency on the string is given by :

[tex]f=\dfrac{v}{2l}\\\\f=\dfrac{344}{2\times 0.85}\\\\f=202.35\ Hz[/tex]

Now fundamental wavelength is :

[tex]\lambda=\dfrac{v}{f}\\\\\lambda=\dfrac{344}{202.35}\\\\\lambda=1.7\ m[/tex]

So, the fundamental wavelength of the vibrating string is 1.7 m.

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