How long does it take for a 4 inch candle to burn out

Answers

Answer 1

Answer:
What does "a 4-inch candle" mean ?
Is that the length of the candle or its diameter ?

The life of a candle depends on its length, its diameter, the
thickness and starting-length of its wick, the exact substance
of which it's composed ... the type of wax ... and the motions
of the air around it.

I'll always remember the candle shop I visited ... I don't remember
what I was doing in a candle shop, but I was there. There was a
little wax turkey up on a glass shelf, with a tiny tiny flame in the
middle of its back, so tiny that you could easily miss noticing it.
The little sign standing next to the little turkey on the shelf explained
that this was a Thanksgiving candle ... it was lit last Thanksgiving,
and would continue burning until NEXT Thanksgiving, roughly a year later !

Answer 2

Answer: well, it depends on what kind of candles (big, small, regular, etc.) but some takes 7 hours

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Which option is a scientifically accurate description of velocity? A. The golf pro missed the shot even though the ball was only one meter away from the cup. B.With just two second left on the clock, the basketball player moved quickly down the court to sink the ball in the basket. C.The skier traveled downhill along the 80-meter track to the finish line in just 3.5 seconds to win the competition. D. After traveling at 120 kph for the entire 30-minute race, the racecar driver ended the race at the same point she started.

Two spheres exert a gravitational attraction on each other. Which of the following changes to this system would reduce the gravitational attraction by one half?

Answers

- Decreasing one of the masses to 1/2 of its original value

- Increasing the distance by a factor of $√(2)$

Explanation:

There are no options provided, however we can still answer the question.

In fact, the magnitude of the gravitational force between two objects is given by the equation:

$F=G(m_1 m_2)/(r^2)$

where

$G=6.67\cdot 10^(-11) m^3 kg^(-1)s^(-2)$ is the gravitational constant

m1, m2 are the masses of the two objects

r is the separation between them

We notice that:

The gravitational force is proportional to the product between the masses
The gravitational force is inversely proportional to the square of the distance between the masses

Therefore, in order to reduce the gravitational attraction by one half, we can do one of the following changes:

- Decreasing one of the masses to 1/2 of its original value: for example, if $m_1'=(1)/(2)m_1$ , the gravitational force becomes

$F'=G(m_1' m_2)/(r^2)=G((1)/(2)m_1m_2)/(r^2)=(1)/(2)(G(m_1m_2)/(r^2))=(1)/(2)F$

- Increasing the distance by a factor of $√(2)$ : in fact, if $r'=√(2)r$ , the gravitational force becomes

$F'=G(m_1 m_2)/(r'^2)=G(m_1m_2)/((√(2)r)^2)=(1)/(2)(G(m_1m_2)/(r^2))=(1)/(2)F$

Learn more about gravitational force:

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Acoustics involves the study of _______ and the mediums through which they travel.A.Light waves
B.mechanical waves
C.electromagnetic waves
D.gamma rays

Answers

Answer: The correct option is B.

Explanation:

Acoustic deals with the study of mechanical waves and the mediums through which they travel. It includes sound, infra sound, ultrasound and vibrations.

The mechanical wave is a wave which can travel through a material medium. It can travel through solid, liquid and gases. Sound is the mechanical vibrations of the particles of a gaseous medium.

Therefore, acoustic involves the study of mechanical waves and the mediums through which they travel.

the answers B,mechanical waves

Fill in the blanks an atom that loses a electron is called an ……………………….. and has an overall...………….. charge

Answers

Answer:

An atom that loses a electron is called a cation and has an overall positive charge.

The weight of a person is 500N and his foot imprint is 0.5 m square. Calculate the total pressure exerted by a person when he stands on both feet.

Answers

The total pressure exerted by a person when he stands on both the feet is 10000000 Pascals

Explanation:

Given data

Weight of the person= 500 N

Area of the foot= 0.5 m ²/ 100 ×100

To find the pressure exerted we have the formula,

Pressure exerted= force/area

Pressure exerted= 500 ×100×100/0.5

Pressure exerted=10000000 Pascals

The total pressure exerted by a person when he stands on both the feet is 10000000 Pascals

Are white clouds transparent opaque or translucent

Answers

Believe it or not white clouds can be both opaque and transparent depending on the volume and mass within that cloud. The heavier the cloud, the more opaque it'll seem, but the lighter the cloud is, it'll seem transparent-

What is the steepness of a line on a graph called

Answers

It is called a slope. A slope pointing downwards like this slash \ is considered a negative slope. If a slope pointing upward like this slash / then it is considered a positive slope. What if you had a line on a graph not pointing in either of those directions? If it were pointing straight up like this, | then it would be known as an undefined slope. Last but not least, if you had a line on a graph straight across like this, ____ then it would be zero slope :D

Hope this helps and is a little clear to understand :)

The 'steepness" of a line is called the slope

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