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3 years ago

How are states of matter and changes in energy related

1 answer:

8 0

Phases of matter change by gaining or losing energy. Heat decides the state of matter. ... Liquid ----> Solid This is called freezing process ( liquid needs to be cooled off, example freezing of water, liquid on losing heat to surroundings cools off to form solid. Hopefully this helps. Plze mark me brainiest:)

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A coin is resting on the bottom of an empty container. The container is then filled to the brim three times, each time with a di

Virty [35]

Answer:

Refractive index of liquid C > Refractive index of liquid B > Refractive index of liquid A

Explanation:

Let the depth of each section is h.

That means the real depth for each section is h.

Apparent depth is liquid A is 7 cm.

Apparent depth in liquid B is 6 cm.

Apparent depth in liquid C is 5 cm.

by the formula of the refractive index

n = real depth / apparent depth

where, n is the refractive index of the liquid.

For liquid A:

$n_{A}=\frac{h}{7}$ .... (1)

For liquid B:

$n_{B}=\frac{h}{6}$ ..... (2)

For liquid C:

$n_{C}=\frac{h}{5}$ ..... (3)

By comparing all the three equations

nc > nB > nA

Refractive index of liquid C > Refractive index of liquid B > Refractive index of liquid A

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3 years ago

State three factors that determine the strength of electromagnetic

Sunny_sXe [5.5K]

Answer:

Factors that affect the strength of electromagnets are the nature of the core material, strength of the current passing through the core, the number of turns of wire on the core and the shape and size of the core.Nov 28, 2020

Explanation:

7 0

3 years ago

Read 2 more answers

The products of one turn of dark reaction cycle are called

harina [27]

Light Independent Reactions

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3 years ago

How much force is needed to stop a 80 kg football player if he decelerates at 5m/s?

cricket20 [7]

Use Newton's 2nd law of motion.
Here it is:

   Force = (mass) x (acceleration)

   = (80 kg) x (-5 m/s²)

   =    -400 Newtons .

I called the acceleration negative because the player is slowing down.

The force comes out negative because it's in the direction opposite to
his motion.

4 0

4 years ago

When the atmosphere is absolutely unstable, the environmental lapse rate is ________ the dry adiabatic lapse rate.

insens350 [35]

Answer: greater than

Explanation:

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3 years ago