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ankoles [38]
3 years ago
10

What type of heat transfer is boiling water??

Physics
2 answers:
beks73 [17]3 years ago
6 0
Heat can be transferred from one place to another by three methods:

conduction in solids,

convection of fluids (liquids or gases),

radiation through anything that will allow radiation to pass.
Vika [28.1K]3 years ago
4 0

"Boiling water" means pumping enough heat into it to raise its temperature to the boiling point.

"Type of heat transfer" means how do you do that ... pump the heat into the water ?

Well, there are exactly three ways to transfer heat from one place to another: Conduction, convection, and radiation. There aren't any other ways. You can use ANY of these types of heat transfer IF you can construct a way to use it to heat water.

Conduction: Maybe you could heat a steel ball until it's glowing red-hot, then drop it into the water.

Convection: Maybe you could heat the bottom of the bottle or kettle the water is in, and let convection circulate all the water up and down until the whole thing starts boiling.

Radiation: Maybe you could shine a heat lamp or sunshine onto the water, and wait until the water absorbs enough of the radiated heat to start boiling.

The way it's MOST OFTEN done is to light a fire under the water container. When you do that, here are the types of heat transfer involved:

-- Heat transfers from the fire to the bottom of the container by CONDUCTION.

-- The heat passes through from the outside of the bottom of the container to the inside by CONDUCTION.

-- When the heat gets inside, it heats up the bottom of the water by CONDUCTION.

-- The water circulates up and down in the container. Hot water rises from the bottom to the top, and cold water sinks from the top to the bottom. That's CONVECTION. Eventually, ALL of the water in the container is hot enough to boil.

You might be interested in
Estimate the wavelength of electrons that have been accelerated from rest through a potential difference of 60 kV.
ivolga24 [154]

Answer: 2.068*10^{-14}m

Explanation: According to work energy-theorem , the workdone in accelerating the electron equals the energy it would give off in terms of light.

workdone= qV

energy = hc/λ

q=magnitude of an electronic charge= 1.602*10^{-16}

h= planck constant = 6.626*10^{-34}

c= speed of light =2.998* 10^{8}

v= potential difference= 6*10^{4}

λ= wavelength=unknown

by making λ subject of formulae we have that

λ= \frac{hc}{qv}

λ = 6.626*10^{-34} * 2.998* 10^{8} / 1.602*10^{-16} * 6*10^{4}

λ = \frac{19.878*10^{-26} }{9.612*10^{-12} }

by doing the necessary calculations, we have that

λ = 2.068*10^{-14}m

8 0
3 years ago
Water from a fire hose is directed horizontally against at a rate of 50.0 kg/s and a speed of 42.0 m/s.
ss7ja [257]

Answer:

Force, |F| = 2100 N

Explanation:

It is given that,

Water from a fire hose is directed horizontally against at a rate of 50.0 kg/s, \dfrac{m}{t}=50\ kg/s

Initial speed, v = 42 m/s

The momentum is reduced to zero, final speed, v = 0

The relation between the force and the momentum is given by :

F=\dfrac{p}{t}

F=\dfrac{mv}{t}

F=50\ kg/s\times 42\ m/s

|F| = 2100 N

So, the magnitude of the force exerted on the wall is 2100 N. Hence, this is the required solution.

8 0
3 years ago
2.)
Oduvanchick [21]

Answer:

-22.7 m/s^2

Explanation:

This is a uniformly accelerated motion, so we can determine the deceleration of the car by using a suvat equation:

v^2-u^2=2as

where

v is the final velocity

u is the initial velocity

a is the acceleration

s is the distance covered

For the car in this problem,

u = 27.8 m/s

v = 0

s = 17 m

Solving for a, we find the acceleration:

a=\frac{v^2-u^2}{2s}=\frac{0-27.8^2}{2(17)}=-22.7 m/s^2

4 0
3 years ago
How long would a circuit be connected to produce a current of 0.65 A with a charge of 380 C?
drek231 [11]

Answer:

what grade are you dude

3 0
3 years ago
How many years would it take to reach the planet saturn travelling at 21 thousand miles per hour? enter your answer with 2 decim
Dmitry_Shevchenko [17]

It would take about 4.8 years to travel from earth to Saturn.

<h3>How long would it take?</h3>

We know that speed is expressed as the ratio of distance to time. In this case, we are trying to know ow many years would it take to reach the planet Saturn travelling at 21 thousand miles per hour.

Given that;

Speed = 21 thousand miles per hour

time taken = ???

Distance = 887 million miles

Speed = distance/time

speed * time = distance

time = distance/speed

time = 8.87 * 10^8 miles/2.1 * 10^4  miles per hour

time = 4.22 * 10^4 hours

If 8.766 * 10^3 hours make 1 year

4.22 * 10^4 hours  make 4.22 * 10^4 hours * 1 year/8.766 * 10^3

= 4.8 years

Learn more about Saturn:brainly.com/question/12181523

#SPJ1

8 0
1 year ago
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