All categories

2 years ago

What does the law of conservation of matter state

Physics

1 answer:

r-ruslan [8.4K]2 years ago

3 0

Answer:

Matter can be changed, but not created or destroyed.

Explanation:

Matter can change for through physical and chemical changes, though this happens, matter is conserved. The same amount of matter exists before and after the change.

You might be interested in

A block slides down an incline plane that makes a 30 degree angle with the

Alona [7]

Hi there!

We know that:

Force due to gravity = Mgsinθ

Force due to friction = μMgcosθ

Let the positive direction be directed in the direction of the block's acceleration, which is downward.

Thus:

ΣF = Mgsinθ - μMgcosθ

Solving for acceleration requires diving all terms by the mass, so:

a = gsinθ - μgcosθ

Substitute in given values. (g = 9.8 m/s²)

a = 9.8sin(30) - 0.3(9.8)cos(30) = 2.354 m/s²

7 0

3 years ago

How much thermal energy is added to 1.5 kg of ice at -20°C to convert it to water at 0°C? Specific heat for ice is 2060 J/kg.°C

defon

Answer:562800

Explanation:

mcT+Qmelt

5 0

3 years ago

2. Which best represents a physical property of a

Svet_ta [14]

B) Gold has a density of 19.3 g/cm3

4 0

3 years ago

A pair of stylish sneakers could be considered a<br> because it is not a necessity

iragen [17]

Answer:

want

Explanation:

because it is not actually needed for the existence of life at that particular time

3 0

3 years ago

Nick raises a 4-kg mass vertically 0.05 meters above his head. Determine the work done on the mass.

Misha Larkins [42]

The work done by Nick as he raises the given mass over the given distance is approximately 2 Joules.

Given the data in the question:

Mass raised; $m = 4kg$

Distance covered; $d = 0.05m$

Work done; $W = \ ?$

First we calculate the force used to raise the mass to the given distance.

Since the movement was vertical, the force must over come the mass and the pull of gravity ( $g = 9.8m/s^2$ ).

Using Newton's second law of Motion;

$F = m * g$

We substitute our values into the equation

$F = 4kg * 9.8m/s^2\\\\F = 39.2 kgm/s^2$

Now, we determine the work done by Nick.

Work done is simply the energy transferred from one store to another.

It is expressed as;

$Work\ done = force * distance\\\\W = F * d$

So we substitute our values into the equation

$W = 39.2kgm/s^2 * 0.05m\\\\W = 1.96kgm^2/s^2\\\\W = 2 J$

Therefore, the work done by Nick as he raises the given mass over the given distance is approximately 2 Joules.

Learn more about Newton's law of motion: brainly.com/question/20066791

8 0

3 years ago