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ruslelena [56]
3 years ago
11

How are chemical and physical changes different on a molecular level? Chemical changes involve the breaking of bonds in molecule

s. Chemical changes do not affect bonding between atoms. Physical changes do not involve molecules. Physical changes cause new molecules to form.
Physics
2 answers:
kvasek [131]3 years ago
7 0

Answer:

How are chemical and physical changes different on a molecular level? Chemical changes involve the breaking of bonds in molecules. Chemical changes do not affect bonding between atoms. Physical changes

Explanation:

azamat3 years ago
5 0

Answer: A Chemical changes involve the breaking of bonds in molecules.

Explanation: Because in a chemical change it breaks bonds of molecules and the other ones dont look right and this is the only statement that is true.

Hope this helps!

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Why do clouds tend to form over land with a sea breeze and over water with a land breeze?
Masja [62]
Because the waves in the water with the fan like system.
6 0
3 years ago
an object has a mass of 50kg, a final height of 20m and an initial height of 8m. what is the amount of work done
Andrei [34K]

amount of work done is 5880 J

Given:

mass of object = 50kg

Final height = 20m

initial height = 8m

To Find:

amount of work done

Solution:

work is done when a force acts upon an object to cause a displacement. You can calculate the energy transferred, or work done, by multiplying the force by the distance moved in the direction of the force.

The work done by gravity is given by the formula,

W = mgh

W = 50 x 9.8 x ( 20-8)

= 5880 J

So the work done is 5880 J

Learn more about Work done here:

brainly.com/question/25239010

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7 0
2 years ago
In a pool game, the cue ball, which has an initial speed of 3.0 m/s, make an elastic collision with the eight ball, which is ini
zhenek [66]

Explanation:

Given

initial speed(u)=3 m/s

mass of each ball is m

Let the cue ball is moving in x direction initially

In elastic collision Energy and momentum is conserved

Let u be the initial velocity and v_1 , v_2 be the final velocity of 8 ball and cue ball respectively

\frac{mu^2}{2}+0=\frac{mv^2_1}{2}+\frac{mv^2_2}{2}

The angle after which cue ball is deflected is given by

\theta _1=90-40=50^{\circ}

Conserving momentum in x direction

mu=mv_1cos40+mv_2cos50

3=v_1cos40+v_2cos50

Along Y axis

0+0=v_1sin40-v_2sin50

v_1sin40=v_2sin50

substitute the value of v_1

we get v_2=1.912 m/s

v_1=2.27 m/s

5 0
3 years ago
How are temperature, pressure, and volume related dealing with the behavior of a gas
fredd [130]
Pressure and volume of a gas are inversely related. As one goes up, the other goes down, and vice-versa. 
7 0
4 years ago
Dani has 15.00 grams of water (c = 4.186 joules over grams times degrees Celsius) at 66°C. She adds 40.00 grams of water at 35°C
Serggg [28]

Answer:

43.45°C

Explanation:

4 0
3 years ago
Read 2 more answers
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