an ice cube is placed in the sun later there is a puddle of water later still the.puddle is gone what kind of change has occured​

Answers

Answer 1

Clear question is;

An ice cube is placed in the sun. Later there is a puddle of water. Later still the puddle is gone. What kind of change has occurred?

Answer:

Physical change.

Explanation:

There are two type of changes called physical change and chemical change.

In Physical changes, there is only change in the appearance of the substance and not its chemical composition. Whereas, in Chemical changes the substance changes entirely into another substance with a new chemical formula.

Now, for the ice cube, it has melted from a solid state to a liquid state. Thus, there is only a change in appearance and not its chemical composition. Thus, it's a physical change that has occurred.


Related Questions

The gravitational acceleration on Earth is 9.8 m/s2. What is the weight of a car on Earth (to the nearest whole number) if it has a mass of 1360 kg? 14 N 139 N 1333 N 13,328 N

Answers

Weight = (mass) x (gravitational acceleration where the mass is)

Weight = (1360 kg) x (9.8 m/s²)

Weight = 13,328  kg-m/s²

That's 13,328 Newtons

Given:-

Mass (m) of the car = 1360 kgAcceleration due to gravity (g) = 9.8 m/

To Find: Weight (W).

We know,

W = mg

where,

W = Weight,m = Mass &g = Acceleration due to gravity.

Thus,

W = (1360 kg)(9.8 m/s²)

→ W = 13,328 N (D)

what is the speed of a car that travels a distance of 200m in 2.3 seconds ? ​

Answers

Answer:

460metre per second

Explanation:

Speed = Distance x Time.

Starting from rest, a truck accelerated at a rate of 2 m/s to the right for 25 seconds. How far will the truck travel during this time period

Answers

Answer:

S= ?

V=2m/sec

t=25s

S=V*t

S=2*25

S=50m

A speed racer travels 25.3 m/s in 9.6 s. How far did it travel?

Answers

Given:-

Speed = 25.3 m/s

Time taken = 9.6 s

To be calculated:-

Calculate the distance covered by a body.

Formula applied:-

Speed = Distance/Time

Solution:-

We know,

Speed = Distance/Time

[tex] \bf\implies \: 25.3 = \frac{Distance}{9.6} [/tex]

[tex] \bf \implies \: Distance = 25.3 \times 9.6[/tex]

[tex] \bf\implies \: Distance = 242.88 \: m \: (approx)[/tex]

7. The technology they had in the 70's was similar to a modern day _______________ that could fit in our pocket. (space science; The Farthest: Voyager in Space Viewing Guide)

Answers

Answer:

Key Fob.

Explanation:

On the 5th of September, 1977, the National Aeronautics and Space Administration (NASA) launched a spacecraft known as "Voyager 1" to study and explore the outer planets of the solar system.

Additionally, two voyager spacecraft were built for the above mentioned study and exploration exercise; Voyager 1 and Voyager 2. Voyager 2 was actually the first spacecraft while Voyager 1 was launched sixteen (16) days after and was faster.

According to Rich Terrile, the technology they had in the 70's was similar to a modern day Key Fob that could fit in our pocket because the processing power of the computer chip found in a Key Fob was comparable to the much larger voyager probe (Voyager 1 and Voyager 2) of the 70's, that was tagged an artificial brain.

This ultimately implies that, the computer chip found in a car Key Fob is more powerful and sophisticated than the Voyager probe, even though the Key Fob is smaller but having the same amount of memory.


Robin jogs with an average speed of 5.5 m/s for 3.3s.
What was her distance travelled in meters?

Answers

Answer:

18.15m

Explanation:

Speed * Time = Distance

5.5 * 3.3 = 18.15m

The distance traveled by Robin is equal to 18.15 m with an average speed of 5.5 m/s for 3.3s.

What is the average speed?

The average speed can be explained as the total distance covered by the object in a definite time. The average speed can be considered a scalar quantity as it exhibits magnitude and no direction.

The average speed of a physical system can be determined from the ratio of the total distance traveled by the system to the time taken to cover that distance.

The average speed equation of a physical system can be written as follows:

Average speed =  Total distance/total time taken

Given, the average speed of the Roin, = 5.5 m/s

The time is taken by Robin for jogging = 3.3 s

The average speed of the Robin can be determined as:

Average spped = Distance/ time

5.5 = Distance/3.3

Distance traveled by Robin = 5.5 × 3.3 = 18.15 m

Learn more about the average speed, here:

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What indicates that an atom
has no overall charge?

Answers

When the amount of protons and electrons is the same within the atom. Hope this is the answer you’re looking for :)

WHO IS GOOD AT PHYSICAL SCIENCE PLS COME HERE AND HELP ME OUT!!!!

Answers

me i’m very good!! just lmk a question

distance travelled by a train is 495 km in 4 hours 30 minutes, what is its speed in m/s? 

Answers

Answer:

9.09m/s

Explanation:

Speed = Distance/Time

Distance = 495km

Time = 4 hr 30 min = 4 hr 1/2hr = 4.5 hr

Therefore, Speed = 495/4.5 = 110km/h

Now to convert km/h to m/s

110 x 1000/ 110 x 110

110 cancels out each other, we are now left with

1000/110 = 9.09m/s

After you let go of a bowling ball, is there a force pushing it so that it keeps moving
forward? Explain.

Answers

Explanation:

No, the ball keeps moving forward due its momentum.

A net force causes an object to accelerate, which means it speeds up, slows down, or changes direction.  A bowling ball does not speed up after you let go, so there is no forward force.

How does distance affect gravity???

Answers

Answer:no because distance is weaker than gravity

Explanation:the strenght of the gravita force between the two objects depend on two facto mass and distance the force of gravity the masses  exert on each other increases the force of gravity decreases if the distance is doubled the force of gravity is one fourth as strong as before

Yes it does if the force between 2 bodies is F at the distance r, if we move one of them at the distance 2r, than the force becomes f/4

Why do we insulate houses?
A. To prevent heat transfer from inside to
the outside
B. To allow energy to flow from inside to
the outside
C. To keep them cool in the winter and
warm in the summer

Answers

B to allow energy to flow from inside to the outside

Write about natural indicators. ​

Answers

Natural Indicator is a type of indicator that can be found naturally and can determine whether the substance is an acidic substance or a basic substance. Some examples of natural indicators are red cabbage, turmeric, grape juice, turnip skin, curry powder, cherries, beetroots, onion, tomato, and etc.

Hope this answers ur questions

which expression correctly describes energy using SI units

Answers

Answer:

Joule

Explanation:

energy, work, quantity of heat

m2·kg·s-2

"Suppose an elephant (Tiny) was
pacing back and forth at the zoo.
She first goes 8 meters to the
left, 6 meters to the right, and 2
meters to the left.
What is the total distance Tiny
has traveled?
I
What is Tiny's displacement?

Answers

Answer :

Distance traveled by Tiny : 8m + 6m + 2m = 16 meters
Displacement of Tiny : 8m (left) - 6m (right) + 2m (left) = 4 meters to the left

Explanation :

Distance : sum of all values of movement given in the question = 8 meters (left) + 6 meters (right) + 2 meters (left)

Displacement : Shortest distance covered from the starting point = 8 meters (left) + 2 meters (left) - 6 meters

Sry I could not explain more hope you found it useful

What is the velocity of the object moving from 3 - 7 seconds?
O m/s
-6 m/s
6 m/s

Answers

6 m/s. Learn how to read graphs

Which best describes internet wikis as a source of scientific information

Answers

Answer:

They are written or edited by anyone

Explanation:

An object moves along the x-axis. The graph shows its position x as a function of time t. Find the average velocity of the object from points B to C. −8.3 m/s −4.2 m/s 0 m/s −0.12 m/s

Answers

Answer:

-8.3m/s

Explanation:

its correct

Answer: its 0.

Explanation: Gradpoint

N
How long would it take a runner to travel 4 miles if they ran at a pace of 2.3 miles/hour?
(10 Points)
O 9.2 hours
O 0.575 hours
O 2.35 hours
O 1.739 hours

Answers

Answer:

9.2

Explanation:

just multiply 4 miles times 2.3 then you get your answer

9.2. Hours or 1.739 hours

Why us an element considered a pure substance

Answers

Explanation:

Hey there!!

An elements is called a pure substance because it is composed of only one kina of atoms in a fix proportion.

Hope it helps...

Answer:

Elements are pure substances because elements are always made up of same kind of particles.

Example:- pure Iron rod (iron is an element)is made up of many similar Iron atoms.

give reason the si syetem of units is better than the mks system​

Answers

is there a tutor available

What aspect of motion can you conclude is common among freely falling objects ?

Answers

Answer:

Free-fall is defined as the movement where the only force acting on an object is the gravitational force.

By the second Newton's law, we have that:

F = m*a

Where F = Force, m = mass, a = acceleration.

We can write this as:

a = F/m

And the gravitational force can be written as:

F = (G*M/r^2)*m

Where G is the gravitational constant, M is the mass of the Earth in this case, and r is the distance between both objects (the center of the Earth and the free-falling object)

As the radius of the Earth is really big, the term inside the parentheses is almost constant in the region of interest, then we can write:

G*M/r^2 ≈ g

And the gravitational force is:

F = g*m

And by the second Newton's law we had:

a = F/m = (g*m)/m = g

a = g

Then the acceleration does not depend on the mass of the object.

Then the thing that is common among the free-falling objects is the vertical acceleration.

Which of the following are states of matter?
A. Gas
B. Compound
€. Mixture
D. Solid
E. Liquid

Answers

Answer:

Solid , liquid and gas

Explanation:

However, mixture and compound are other things.

Which careers typically require post-secondary education other than vocational school? Check all that apply. Boiler Operation Construction Management Architecture Repair Work Civil Drafting Carpentering

Answers

Answer: Construction management, Architecture, Civil Drafting.

Explanation: hope this helps :)

Construction Management, Architecture and Civil Drafting are careers typically require post-secondary education other than vocational school. So, the correct options are B, C and E.

What is Career?

Career is defined as a person's metaphorical "journey" through learning, work and other aspects of life where there are many ways to define career and the term is used in different ways.

A career is defined as the variety of experiences that we have had throughout our lives. As we gain more experience in the world of work and life, we build careers. We take into account career paths education, training and paid or unpaid work. Construction Management, Architecture and Civil Drafting are careers typically require post-secondary education other than vocational school.

Therefore, the correct options are B, C and E.

Learn more about Career, here:

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A drunk college student decides to try to do a perfect swan dive from his apartment window into the pool below. The edge of the pool is 5 meters from the base of the building and his window is on the 3rd floor, which is 8 meters from the ground. If he jumps out the window horizontally at a speed of 4 m/s, does he make it into the water or..

Answers

Answer:

He barely makes it but hit his leg on the pool edge.

Explanation:

Using kinematic formula: Δx=[tex]v_{0}t+(1/2)at^2[/tex]

We can plug in delta x, v zero, and acceleration.

delta x = 8 meters, v0 = 0. a = 9.8

8=(1/2)9.8*t^2

Around 1.278 seconds of airtime.

4 * 1.278 = 5.112 meters horizontally assuming no air resistance

That was close!

A positively charged atom has

Answers

It has a positive charge

Answer:

Lost electrons

Explanation:

For a atom to become positively charged it needs to have more protons than electrons

2. On a par 4 golf course, you make the ball in:
1. Hole in one
2. Birdie
3. Par
4. Eagle
5. Double bogey
6. Triple bogey
7. Bogey
a. 7 shots from the tee
b. 5 shots from the teel
c. 1 shot from the tee
d. 4 shots from the tee
e. 3 shots from the tee
f. 2 shots from the tee
g. 6 shots from the tee

Answers

1 =c
2=e
3=d
4=f
5=g
6=a
7=b

What do all of the elements in group 13 have in common?

Answers

each one of the elements in group 13 has three electrons in the outer shell of their nuclear structure
They have three electrons in the outer shell

CAN YOU THE 3 QUESTIONS ILL PUT U AS BRAINLEST!!!!

Answers

Answer: 1. 5 1/6 m/s 2. Traveling Left 3. 0.45

Explanation:

Please mark Brainliest!!!

1) Describe how the atoms of a solid differ from the atoms of a liquid.

Answers

Answer:

liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.

The atoms of solids and liquids are different from each other in many ways as discussed below.

We have a solid and a liquid.

We have to describe how the atoms of a solid differ from the atoms of a liquid.

What is Atom?

An Atom smallest unit into which matter can be divided without the release of electrically charged particles.

According to the question, the following differences exists between the atoms of solids and liquids -

In solids the atoms are tightly packed while in liquid they are loosely packed.In solids the density of atoms within a specific volume is very high while in liquid it can be either high or low.In solids, atoms are not free to move and they can only oscillate about their mean position while in liquid the atoms are free to move.

Hence, it can be seen that the atoms of solids and liquids are quite different from each other.

To learn more about the Structure of matter, visit the link below-

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