3 years ago

Calculate the refractive index of the substance if the speed of light in the medium is 210,000 km/s.

1 answer:

6 0

0.7 is the correct answer

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VARVARA [1.3K]

Answer:

Gas

Explanation:

6 0

3 years ago

Natalija [7]

The first blank: HEAT
The second blank: ELECTRICAL

3 0

3 years ago

Reil [10]

Answer:

160N

Explanation: When 80kg mass is one group . It's reaction force acting on a ground.

Weight of the object = 80*10

= 800 N

Here we are given cofficient of static friction its 0.2. It should be smaller than 1

Friction force = Reaction * Friction Cofficient

Reaction = 800N ( Considering Vertical Equilibrium )

F = 800* 0.2

F = 160N

3 0

3 years ago

Katarina [22]

(C)

Explanation:

$E = hf = (6.626×10^{-34}\:\text{J•s})(8.0×10^{15}\:\text{Hz})$

$= 5.3×10^{-18}\:\text{J}$

4 0

3 years ago

Kipish [7]

The only reasonable choice from this list is choice-A.

8 0

3 years ago