All categories

3 years ago

Isla made ice by putting water in the freezer. Freezing is an example of (2 points)

Physics

2 answers:

alexgriva [62]3 years ago

7 0

Answer:

a physical change

Explanation:

because water as it is in its original state a liquid is frozen therefore it changed its physical look

SSSSS [86.1K]3 years ago

6 0

Answer:

a physical change

You might be interested in

Which process requires the addition of energy to water?

Taya2010 [7]

Water must absorb energy in order to melt, evaporate, or get warmer.

3 0

2 years ago

As the amount of surface area increases, what happens to the rate of this reaction? If the antacid tablet were broken into eight

dangina [55]

as the surface area increases the rate of reaction also increases.

Explanation:

4 0

3 years ago

Match each description to its written source.

madreJ [45]

1=6, 2=8
I hope this helped

3 0

3 years ago

What would the final temperature be if 8.94 X 10 3 joules of heat were added to 454 grams of copper at 23.0 o C?

ozzi

Answer: $74.1^0C$

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

$Q=m\times c\times \Delta T$

Q = Heat absorbed= $8.94\times 10^3$ Joules

m= mass of copper = 454 g

c = specific heat capacity = $0.385J/g^0C$

Initial temperature of the copper = $T_i$ = 23.0°C

Final temperature of the water = $T_f$ = ?

Change in temperature , $\Delta T=T_f-T_i$

Putting in the values, we get:

$8.94\times 10^3=454\times 0.385\times (T_f-23.0)^0C$

$T_f=74.1^0C$

The final temperature of copper will be $74.1^0C$

8 0

3 years ago

Helpppp!!!ASAP!! THANK YOUUUU!

mario62 [17]

Answer:

F = 9.675Hz

Explanation:

pls for certain reasons let us make

wavelength = $
frequency = F
V = velocity

3 loops : 6$/4 = L

6$/4 = 2

$ = 4/3 = 1.333

V = F x $

F = V/$

F = 12.9/1.333 = 9.675Hz

F = 9.675Hz

4 0

2 years ago