All categories

3 years ago

Explain why energy must be added to a solid to cause it to melt.

Physics

2 answers:

Tema [17]3 years ago

8 0

Most of the time heat melts solids. hope that helps :)

Katarina [22]3 years ago

7 0

A solid state means that the atoms are pretty much locked into one position. d they don't have enough energy to break away from each other. But when you add energy through heat the atoms to gain enough energy that they begin to break away from each other.

In Simple terms, when heat is added to the solid thing it allows it to get enough energy to let that solid substance melt.

You might be interested in

Help!!! This is worth 30 points pls pls pls help help help

Ksivusya [100]

Answer:

The tennis ball is moving 6m/s.

Explanation:

displacement(s) = 0.5 m

intial velocity(u) = 4 m/s

acceleration(a) = 10 m/s²

As we know,

2as = v²-u²

or, 2 ×10 × 0.5 = v²-4²

or, 10 = v²-16

so, v² = 36

so, v (final velocity) = 6 m/s

8 0

3 years ago

Read 2 more answers

What particles in an atom can increase and decrease in number without changing the identity of the elements

Dennis_Churaev [7]

Answer:

The number of neutrons or electrons in an atom can change without changing the identity of the element.

3 0

3 years ago

Read 2 more answers

Good morning! can someone please answer this, ill give you brainliest and your earning 50 points.

ser-zykov [4K]

The uses of fossil fuel causes:

All of the above

Fossil fuels burn and increases in global temperature because it emits greenhouse gases. And the extreme climate change decreases biodiversity and last but not the least it increases pollution because burning of fuels emit gases like Carbon-dioxide etc...~

4 0

3 years ago

Read 2 more answers

Object 1 of mass m moves with speed v in the positive direction. Object 2 of mass 3 m moves with speed 4 v in the negative x-dir

Klio2033 [76]

Answer:

This means that the kinetic energy of second object is 48times that of the first object

Explanation:

Kinetic energy is the energy possessed by a body by virtue of its motion e.g motion of an accelerating car. Mathematically,

Kinetic energy = 1/2mv² where;

m is the mass of the object

v is the velocity of the object

If Object 1 of mass m moves with speed v in the positive direction, its kinetic energy will be expressed as;

K1 = 1/2mv²

For Object 2 of mass 3m moving with speed 4v in the negative x-direction, its kinetic energy can be expressed as;

K2 = 1/2(3m)(4v)²

K2 = 1/2(3m)(16v²)

K2 = (3m)(8v²)

K2 = 24mv²

To compare the kinetic energy of both bodies, we will take the ratio of K2:K1 to have;

K2/K1 = 24mv²/(1/2)mv²

K2/K1 = 24/(1/2)

K2/K1 = 48

K2 = 48K1

This means that the kinetic energy of second object is 48times that of the first object and moving in the negative x direction since the body of mass 3m initially moves in the negative x direction.

3 0

4 years ago

2. If, in the previous question, there is a 15 N kinetic frictional force opposing the motion, how much work is

NeTakaya

Answer:

this answer your question

4 0

3 years ago