Answer:
The speed of light becomes slower in denser medium which is water in this case.
Explanation:
We know the lens law of Refraction which states
Refractive index of second medium /Refractive index of the first medium
= Velocity of light in medium 1 (V1)/ velocity of light in medium 2 (V2)
When light rays fall from air medium into water which is a denser medium bending of light or change in the direction of light occurs which is knows as Refraction.
When refraction occurs speed of the light rays are also varied as we can see it from the Lenz's Law. suppose two light rays parallel to each other falling on the air-water interface at an angle , the first ray will reach the interface and bend about the normal and then the second ray. We also observe when light enters denser medium the speed of light becomes slower, also the bending of light when going from rarer to denser it bends towards normal of the surface and when it move from denser to rarer medium it moves away from the normal to the surface.
Answer:
Explanation:
Misconception #1: Mental illnesses aren't real.
Misconception #2: Youth can't experience mental illness.
Misconception #3: Mental illness is a sign of weakness.
Misconception #4: People living with a mental illness will never get better
The answer is GAS. Gas has a physical state characterized by having no definite volume or shape and consisting of neutral particles. or it can also be plasma.
Answer:
There is no percent left for other foods
Explanation:
The total energy consumed was:
E = 2x1.2x10⁶ + 3x6.7x10⁵ =
E = 4.41x10⁶ J
Knowing that 1 cal = 4.184 J
1 cal --------- 4.184 J
y ---------------- 4.41x10⁶ J
By a simple direct three rule:
4.184y = 4.41x10⁶
y = 1.05x10⁶ cal
Which is higher than the 2000 calorie daily food intake, so there is no percent left for other foods.
Answer:
39,5 grams should be obtained of NaCl
Explanation:
We calculate the weight of 1 mol of NaCl:
Weight 1 mol NaCl= Weight Na + Weight Cl= 23g + 35,5g=58,5 g/mol
4,5M--> 4,5 moles NaCl in 1000ml (1L) of solution
1000ml-----4,5 moles NaCl
150 ml------x=(150 mlx4,5 moles NaCl)/1000ml=0,675 moles NaCl
1 mol NaCl--------------58,5 grams
0,675molesNaCl---x= (0,675molesNaClx58,5 grams)/1 mol NaCl
x= 39,4879 grams