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3 years ago

Part ADoes the number of particles change as the substance changes its state?

Physics

1 answer:

vovangra [49]3 years ago

6 0

No, the number of particles does not change as the substance changes its state.

<h3><u>Explanation: </u></h3>

Change of state from one phase to another is achieved by providing or absorbing heat or pressure. For instance, liquid water if heated becomes vapour steam and if cooled becomes solid ice. Vapour can be compressed to form liquid water again and thus change of state is a reversible action.

The "chemical composition of the matter remains the same" irrespective of its state. Unless a chemical change is carried out, no change occurs with the number of particles. Phase change only affects the "arrangement of molecules", its structure and its motion.

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3 years ago

A fish is hooked on a line that is wound around the spool of a fishing reel. The reel has a mass of 652 g and a diameter of 10 c

iren2701 [21]

The magnitude of the force exerted by the fish is 3,052.5 N.

The given parameters;

mass of the reel, m = 652 g = 0.652 kg

diameter of the reel, d = 10 cm

radius of the reel, r= 5 cm = 0.05 m

time of motion, t = 5 s

angular speed of the reel, ω = 306 rad/s

According to Newton's third law, the force exerted by the reel is equal in magnitude to the force fish exerted on the reel.

The centripetal force of the reel = force exerted by the fish

$F_c = m\omega^2 r\\\\F_c = 0.652 \times (306)^2 \times 0.05\\\\F_c = 3,052.5 \ N$

Thus, the magnitude of the force exerted by the fish is 3,052.5 N.

Learn more here: brainly.com/question/14905888

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3 years ago

2. Does the amount of iron in the water affect plant growth?

Airida [17]

Answer:

Yes, the amount of Iron can affect the growth of plant.

Explanation:

Iron is essential micro-nutrient for the growth of plant but it is required only in small amount. Iron is required when plant produces chlorophyll and this gives plants oxygen and healthy green color but if a plant is suffering from iron deficiency then the plant's growth becomes stunted and leaves color changes to yellow. For plants requirement of iron is just 1 to 1.5 lb per acre whereas, requirement of nitrogen is 75 to 200 lb per acre.

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3 years ago

You need to estimate the floor area of your unusual oval shaped living room from memory you remember that it is longer than wide

REY [17]

Answer:

Our estimate not done correctly because the width was unrealistic.

Explanation:

Given that,

Length = 6 m

Width = 0.5 m

We need to calculate the area of rectangular floor

Using formula of area

$A=l\times w$

Where, l = length

w= width

Put the value into the formula

$A=6\times0.5$

$A=3\ m^2$

We need to find why this estimate not done correct

Using given data

We can say that,

We assume width was unrealistic.

The length of room is 6 m.

We know that,

$1\ m=3.28\ feet$

So, the length would be 20 feet.

The width of room is 0.5 m.

The width of room would be 1.64 feet.

So, the area will be

$A=20\times1.64$

$A=32.8\ feet^2$

Hence, Our estimate not done correctly because the width was unrealistic.

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3 years ago

Part ADoes the number of particles change as the substance changes its state?​

Part ADoes the number of particles change as the substance changes its state?