Heat from a fire is transferred as the air warmed by the fire rises. Which type
of heat transfer is occurring?
A. Refraction
O B. Covection
O C. Conduction
D. Radiation

Answers

Answer 1
D.radiation is the answer

Related Questions

Two 1.2 kΩ resistors are in series and this series combination is in parallel with a 3.3 kΩ resistor. The total resistance is

Answers

Explanation:

you have to divide by 2 and times by 2

The speed limit on many roads in a town 13.5 m/s outside schools this is limit is often reduced by one third

calculate the reduced speed limit

Answers

Answer:

9 m/s

Explanation:

13.5 × [tex]\frac{2}{3}[/tex] = 9

how is grounded theiry different from other qualitative research methods?​

Answers

Answer:

(u mean theory* i think)

Grounded theory differs from either qualitative content analysis or thematic analysis because it has its own distinctive set of procedures, including theoretical sampling and open coding. In contrast, the procedures in the other two are not specified at the same level of detail.

thenks and mark me brainliestt :))

I WILL MARK YOU THE BRAINLIEST NO LINKS
The weight of the fluid that an object displaces is equal to the buoyant force acting on the object is
spring force
Archimedes Principle
buoyant force
Hooke's Law

Answers

Answer:

Archimedes' Principle

Explanation:

Its because Archimedes' Principle states "that the buoyant force on an object is equal to the weight of the fluid displaced by the object.... If you want to know the buoyant force on an object, you only need to determine the weight of the fluid displaced by the object."

What are three other types of new batteries that are being created today? (PLEASE DO NOT GIVE ME ANY LINK, JUST TYPE YOU ANSWER)

Answers

Answer:

Duracell

Amazon Basics 2 Pack CR1616 3 Volt Lithium Coin Cell Battery.

LiCB 20 Pack LR44 AG13 357 303 SR44 Battery 1.5V Button Coin Cell Batteries.

Explanation:

Hope this helps and have a nice day!

6. An excited dog runs full-speed toward his owner who has just returned home from
school. If he runs north along their driveway for a distance of 45 m and takes 5.2 s to get
there, what is his average velocity?
Please answer in comments with work !!:)

Answers

Answer:

v = 8.65 m/s

Explanation:

Given that,

Distance covered by the doge, d = 45 m

Time taken, t = 5.2 s

We need to find its average speed. The total distance covered divided by the total time taken is called the average speed of an object. So,

[tex]v=\dfrac{45\ m}{5.2\ s}\\\\=8.65\ m/s[/tex]

So, the average speed is 8.65 m/s.

when the net force of opposite forces is zero , the forces are
A. not even
B. unequal
C. unbalanced
D. balanced

Answers

The answer is balanced

which types of change observe the law of conservation of mass? single answer
A. only changes of state
B. only physical changes
C. only chemical changes
D. physical changes and chemical changes

Answers

Answer:

d

Explanation:

d just because it is and it's talking about mass and physical match's up with mass

The following three resistors (Ohms) are in parallel with one voltage source. What is the voltage running through the C resistor?

Battery 8
Resistor A 7
Resistor B 6
Resistor C 6

Answers

Answer:

If the resistors are connected in parallel and the battery voltage is 8V, then voltage across resistor C is 8V.

If two 100 ohms resistors are placed in series, their total resistance is what?
1) 10 000 ohms
2) 200 ohms
3) 100 ohms
4) 50 ohms

Answers

Answer:

add the Resistance

2(100)= 200

2) 200 ohms

If two 100 ohms resistors are placed in series, their total resistance will be 200 ohms

What is series combination ?

When two or more resistors are connected end to end consecutively , they are said to be connected in series combination .Total resistance in  series combination is calculated as the algebraic sum of individual resistances

General formula = R (equivalent ) = R1 + R2 + R3 + .......

let R1 = 100 ohms

R2 = 100 ohms

R(equivalent resistance in series combination )= R1 + R2

R = 100 + 100

R = 200 ohms

If two 100 ohms resistors are placed in series, their total resistance will be b) 200 ohms

learn more about series combination

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ngle of a block is 45 degrees. What is the refractive index​

Answers

1.6 ??? I hope I’m right

The filament is broken in a light bulb. The circuit is now
a. open circuited
b. closed circuited
c. neither closed nor open

Answers

Answer:

It is A. Open Circuit.

Explanation:

Filament heats up and produces the light. If the filament breaks, the current does not flow and the circuit will be open. The ammeter will reach zero when this happens.

A student charges a balloon and then brings it near a metal sphere hanging from the
ceiling. She brings it near the sphere, but does not touch. The sphere moves toward
the balloon. What are the charges on the balloon and the metal sphere?
a) The balloon has a positive charge and the metal sphere has a negative charge.
b) The balloon has a negative charge and the metal sphere has a positive charge.
c) Both are negatively charged.
d) Both are positively charged.

Answers

Answer:

B

Explanation:

the balloon has a negative charge and the metal sphere has a positive charge

Answer: B

Explanation:

The balloon will pick up stray electrons, so it will become negatively charged. Since it is attracted to the metal sphere, the sphere must be positively charged.

how is enormous energy produced in sun?write with chical equation.​

Answers

Answer

This is done by Nuclear Fusion.

Light nuclei like Hydrogen(Deuterium) combine to produce new Elements like Helium.

²H + ²H === ⁴He + ENERGY

The subscripts of the Hydrogen atoms are 1

While that of Helium is 2. My Keyboard couldn't type those

If the work required to speed up a car from 11 km/h to 21 km/h is 6.0×103 J , what would be the work required to increase the car’s speed from 21 km/h to 33 km/h

Answers

Explanation:

We need convert the velocities first to m/s and we get the following:

v2 = 21 km/hr = 5.8 m/s

v1 = 11 km/hr = 3.1 m/s

We need to find the mass of the car also for later use do using the work-energy theorem:

[tex]delta \: w = \frac{1}{2} m(v \frac{2}{2} - v\frac{2}{1} )[/tex]

6.0x10^3 J = (0.5) m [(5.8)^2 - (3.1)^2]

or

m = 499.4 kg

Now we determine work needed delta W to change its velocity from 21 km/hr to 33 km/hr

v2 = 33 km/hr = 9.2 m/s

v1 = 21 km/hr = 5.8 m/s

delta W = (0.5)(499.4)[(9.2)^2 - (5.8)^2]

= 1.3 x 10^4 J

A car with a mass of 2000 kg accelerates at 6 m/s'at a green light. What is the car's force?​

Answers

Answer:

Car's force is 12000 N.

Explanation:

→ Force = Mass × Acceleration

→ Force = 2000 kg × 6 m/s²

→ Force = 12000 N

A 1.5 kg object is hanging from a spring with a spring constant of 15 N/m on Earth. What is the period of its up-and-down motion?


1.) 0.10 s

2.) 0.31 s

3.) 2.0 s

4.) 2.5 s

Answers

Answer: 3) 2.0

Explanation: I guessed and got it right on my assignment :)

What is the length of a string with a mass of 2.5 kg, with a
tension of 20 N, if the speed of wave on the string is 2 m/s?

Answers

Answer:

.5 m

Explanation:

It is correct lol.

Sound travels at different speeds in different mediums. Rank the three mediums sound can travel to from fastest to slowest.

Answers

Answer:

Sound travels at different speeds depending on what it is traveling through. Of the three mediums (gas, liquid, and solid) sound waves travel the slowest through gases, faster through liquids, and fastest through solids.

Sound waves fall into three categories: longitudinal waves, mechanical waves, and pressure waves.

I shall give you the ruler.change to passive​

Answers

Answer:

The ruler shall be given to you.

I tried but that's basically how it should look.

What would happen if there were no soundboxes (resonances) in musical instruments?

Answers

The instruments would not produce sound waves therefore make no noise

which of the following best defines unbalanced forces? A. Forces that act in opposite directions and cancel each other out B. Unequal forces that do not cancel out but cause a change in motion c. Foroes between two objects in physical contact D. The total force on an object after individual forces are added togethe​

Answers

Answer:

Neseciti puntos oara mi tarea y mad ni entiendo lo wue dices

Based on information from the graph above, what can be concluded about the relationship between the temperature of a solvent and the solubility of a solute?

A. No conclusions can be drawn.

B. For most solutes, as temperature increases, the solubility is unaffected.

C. For most solutes, as temperature increases, the solubility increases.

D. For most solutes, as temperature increases, the solubility decreases.

Answers

pretty sure it’s C :)

which planet has the closest gravity to Earth?

Answers

The answer would be Venus.
The answer is Venus.
In terms of size, average density, mass, and surface gravity, Venus is also very similar to Earth.

The speed of a wave with a frequency of 2 Hz (2/s), an amplitude of 3 m, and a wavelength of 10 m is

options:

0.2 m/s.

12 m/s.

5 m/s.

20 m/s.

Answers

Answer:

5 m/s

Explanation:

your welcome

The speed of a wave equals to Wavelength and Frequency. The SI unit of speed of wave is m/s. Thus, option D is correct.

What is speed of wave?

The speed of wave is distance travelled by the wave in given time. It is related to both wavelength and frequency. Wavelength is measured in meters and frequency in hertz.

From the givens:

Frequency(f) = 2 Hz.

Wavelength(λ) = 10m.

Amplitude = 3m ( Amplitude does not affect the speed of wave)

Speed (v) = λ × f

               = 10 × 2

              = 20 m/s.

Therefore, the speed of the wave is 20 m/s. Hence, Option D is correct.

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What happens to the particles in water as the water is heated and turns to vapor? (2 points)

Answers

Answer:

The particles will more likely to move faster since they are converted from a liquid to gas.

Rules for States of Matter:

1. Solid particles always are packed close together and don't have much space to move.

2. Liquid particles have space to move around but are still packed together, but not as close as solid.

3. Gas particles are moving freely, in fact they are in the air! Gas particles are free to move wherever. For example, the air has gas particles that are constantly bumping into each other.

Let me know if I am right =)

A +6.33 uC charge q1 is attracted by a force of 0.115 N to a second charge q2 that is 1.44 m away. What is the value of q2?

Answers

Answer:-4.1858

Explanation: I hate Acellus

If A +6.33 μC charge q₁ is attracted by a force of 0.115 N to a second charge q2 that is 1.44 m away. then the value of q₂ = 4.23 μC.

What is coulomb's law ?

Electrostatic force is a force of attraction or repulsion between two unlike or like charges respectively. when like charges come closer to each other, they gets repel by one another and it gets attracted for unlike charges. Force of attraction or repulsion between two point charges are given by coulomb's law. The force of attraction between two charges are given by coulomb's law.

the law states that the force of attraction or repulsion between two point charges is directly proportional to product of magnitude of both the charge and inversely proportional to square of the distance between them.

i.e. F ∝ q₁q₂

F ∝ 1/r²

F ∝ q₁q₂/r²

F = kq₁q₂/r²

where k is proportionality constant k = 1/4π∈₀ = 8.9×10⁹

In this problem,

Given,

q₁ = 6.33×10⁻⁶ C

F = 0.115N

r = 1.44m

q₂ = ?

putting this values in the equation,

0.115 = 8.9×10⁹×6.33×10⁻⁶ ×q₂÷1.44²

q₂ = 4.23 μC.

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what is the second and third law of newton? asap​

Answers

Answer:

In the second law, the force on an object is equal to its mass times its acceleration. I hope this helped!

Explanation:

THIS IS MY EXAM HURRY PLS
Which is a way that the elements are grouped on the periodic table? (2 points) a Elements in the same row have the same number of protons. b Elements with similar bonding properties are in the same column. c Elements in the same column have the same number of neutrons. d Elements with similar mass are placed in the same column.

Answers

Answer:

elements in the same column have the same number of neutrons. elements with similar mass are placed in the same column.

PLEASE HELP!! NO LINKS OR RANDOM WORDS!! If you were looking at the Moon from space (so that you could see all sides of it), how much of it would be lit by the sun at any given time?

1) All of it
2) Half of it
3) It varies depending on the Moon's phase.
4) It varies depending on the time of the year.

Answers

i think it is all of it bc the sun never stops shining

Answer:

3) It varies depending on the Moon's phase.Explanation:

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