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Strike441 [17]
3 years ago
9

What is the claim evidence and reasoning, for the top one

Physics
1 answer:
makvit [3.9K]3 years ago
7 0

claim cold air weighs more than hot air

reasoning is expt

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Light travels through a liquid at 2.25e8 m/s. What is the index of refraction of the liquid?
Pavlova-9 [17]

Answer:

The index of refraction of the liquid is n = 1.33 equivalent to that of water

Explanation:

Solution:-

- The index of refraction of light in a medium ( n ) determines the degree of "bending" of light in that medium.

- The index of refraction is material property and proportional to density of the material.

- The denser the material the slower the light will move through associated with considerable diffraction angles.

- The lighter the material the faster the light pass through the material without being diffracted as much.

- So, in the other words index of refraction can be expressed as how fast or slow light passes through a medium.

- The reference of comparison of how fast or slow the light is the value of c = 3.0*10^8 m/s i.e speed of light in vacuum or also assumed to be the case for air.

- so we can mathematically express the index of refraction as a ratio of light speed in the material specified and speed of light.

- The light passes through a liquid with speed v = 2.25*10^8 m/s :

                         n = c / v\\\\n = \frac{ 3*10^8 }{2.25*10^8} \\\\n = 1.33

- The index of refraction of the liquid is n = 1.33 equivalent to that of water.    

         

8 0
3 years ago
Read 2 more answers
Amoebas have projections called pseudopods. What are they used for
Dvinal [7]

Answer:

Amoebas have projections called pseudopods

Explanation:

Pseudopodia is the locomatary organ of amoeba. It helps them in movement and transportation.

8 0
2 years ago
1. Two charged objects have a repulsive force of 2 N. If the charge of one of the objects is doubled, then the new force will be
GrogVix [38]

Answer:

4 N

Explanation:

Electrostatic force is directly related to the charge of each object hence when the charge is doubled in only one of the objects, the force also double. If it's doubles on both objects, the force becomes four times. In this case, it's doubled on one object hence 2*2= 4 N

5 0
3 years ago
Which statement expresses the relationship between the frequency of emitted electrons and the energy they give off?
Nadusha1986 [10]
I think it would be the first choice
5 0
4 years ago
Read 2 more answers
If a 10,000 g mass is suspended from a rope, what is the tensile force in the rope?
nadezda [96]

To solve this problem we will apply Newton's second law and the principle of balancing Forces on the rope. Newton's second law allows us to define the weight of the mass, through the function

F = ma\rightarrow F =mg

Here,

m = mass

a = g = Gravitational acceleration

Replacing we have that the weight is

W= (10kg)(9.8)

W = 98N

Since the rope is taut and does not break, the net force on the rope will be zero.

\sum F = 0

T-W = 0

T = W

T = 98N

Therefore the tensile force in the rope is 98N

8 0
3 years ago
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