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Ugo [173]
3 years ago
7

Choose all the answers that apply. Heat: is the same as temperature can be increased by compression is transferred in solids by

conduction is transferred in liquids by convection requires a medium
Physics
2 answers:
Otrada [13]3 years ago
5 0

Answer:

C and D are correct

Explanation:

They both show good examples of what heat is

olga55 [171]3 years ago
3 0

Answer:

The question can be re-framed as:

Heat:

⇒a) is the same as temperature

⇒b) can be increased by compression.

⇒c) is transferred in solids by conduction.

⇒d) is transferred in liquids by convection

⇒e) requires a medium.

Option c and d are correct choices.

Explanation:

⇔Heat is a form of energy which can be transferred from higher temperature to lower temperature.

So heat is not the same as temperature.

Where as temperature is the measure of Kinetic energy  possessed by the particles of an object.

⇔As far as the Ideal Gas Law is concerned any gas will tend to heat up as it is compressed and cool down when it expands.

Heat can't be increased by compression its transfer of energy.

⇔Conduction is the transfer of heat between substances that are in direct contact with each other.

Heat is transferred in solids by conduction.

⇔Heat is transferred from hot places to cold places by convection. Convection occurs when warmer areas of a liquid or gas rise to cooler areas in the liquid or gas.

Heat is transferred in liquids by convection.

⇔Heat does not requires a medium for its transfer as in case of radiation where heat is transferred by electromagnetic waves.

Heat doesn't requires a medium for its transfer.

So our correct answer comprises:

Option C and option D that is Heat "is transferred in solids by conduction" and "is transferred in liquids by convection".

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Un vas plin cu lichid cântăreşte 175kg. Ceea ce reprezintă de 5 ori masa vasului gol. Ştiind că volumul interior al vasului este
Mariana [72]

a) Density of the liquid: 823.5kg/m^3

b) Weight of the liquid: 1372 N

Explanation:

Translation of the text:

<em>"A full tank with liquid weighs 175kg. Which is 5 times the mass of the empty vessel. Knowing that the inside volume of the vessel is 0.17kl, calculate: </em>

<em>a) the density of the liquid; </em>

<em>b) the weight of the liquid."</em>

a)

We know that the full tank with liquid has a total mass of M = 175 kg. We can write the total mass as

M=m_L + m_V (1)

where

m_L is the mass of the liquid

m_V is the mass of the vessel

We also know that the total mass M is 5 times the mass of the empty vessel, so we have:

M=5m_V\\m_V=\frac{M}{5}=\frac{175}{5}=35 kg

which is the mass of the empty vessel.

Therefore, we can find the mass of the liquid only using (1):

m_L=M-m_V=175-35=140 kg

The density of the liquid is given by

d=\frac{m}{V}

where

m = 140 kg (mass of the liquid)

V = 0.170 kL = 170 L = 0.170 m^3 (volume of the liquid, which is equal to the volume of the vessel)

So we get

d=\frac{140}{0.170}=823.5kg/m^3

b)

The weight of a body is given by

F=mg

where

m is its mass

g is the acceleration due to gravity

For the liquid in this problem, we have

m = 140 kg (mass)

g=9.8 m/s^2 (acceleration due to gravity)

Therefore, its weight is

F=(140)(9.8)=1372 N

Learn more about density:

brainly.com/question/5055270

brainly.com/question/8441651

#LearnwithBrainly

6 0
3 years ago
On a separate sheet of paper, tell why scientists in different countries can easily compare the amount of matter in similar obje
Harrizon [31]

Answer: no u

Explanation: no u

8 0
3 years ago
Monochromatic light of a given wavelength is incident on a metal surface. However, no photoelectrons are emitted. If electrons a
mrs_skeptik [129]

Answer:

Light of a shorter wavelength should be used.

Explanation:

This is studied in the phenomenon called photoelectric effect, in which light is able to release electrons from a metal, said electrons are called photoelectrons .

The experiments that have been carried out show that <u>increasing  or decreasing the intensity of the light will not cause the photoelectrons to be emitted</u>, what will cause the photoelectrons to be emitted is to increase the frequency of the incident light.

And a higher frequency corresponds to a shorter wavelength according to the equation:

f=\frac{c}{\lambda}

(where f is frequency, c the speed of light, and \lambda the wavelength)

So the answer is that the wavelength of the light must be shortened to cause the emission of electrones.

4 0
4 years ago
Two balls move away from each other, both traveling at 7 m/s. One has a mass of 2 kg and the other has a mass of 3 kg
zavuch27 [327]
A 300-kg bear grasping a vertical tree slides down at constant velocity. The friction force between the
tree and the bear is
5 0
3 years ago
sedimentary rocks are formed due to the …..1-cooling of magna2 weathering of rocks 3 changes in pressure4 changes in temperature
Korolek [52]

Answer:

2

Explanation:

Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formed when weathering and erosion break down a rock into loose material in a source area.

4 0
3 years ago
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