Answer:
1.7 g/cm³
Explanation:
Given that:
Density of substance = 3.4 g/cm³
Relative density to another substance = 2
Density of second substance=?
Let density of second substance = x
Relative density = density of substance / density of second substance
Relative density = density of substance / x
2.0 = 3.4g/cm³ / x
2 * x = 3.4 g /cm³
x = 3.4 g/cm³ ÷ 2
x = 1.7 g/cm³
When it transmits from n=5 to n=3,
∧ = Rh [ni - nf]
∧ = Rh [1/3-1/5]
∧ = Rh 2/15
So, your final answer is Rh * 2/15
Where, Rh = Rydberg's constant
Hope this helps!
Answer:
The power of the mirror is -17.24 diopter.
Explanation:
Magnification of an image,m = 
Distance of the object from the mirror = u = 29.0 cm
Distance of an image from the mirror = v
Magnification = 
Focal length of mirror = -5.8 cm =-0.058 m
Power of the lens = P
Answer:
a) 
b) 
Explanation:
From the exercise we know:
; 
; 
; 
; 
The formula for average velocity is:
a) 
The formula for average acceleration is:
b) 
a₀). You know ...
-- the object is dropped from 5 meters
above the pavement;
-- it falls for 0.83 second.
a₁). Without being told, you assume ...
-- there is no air anyplace where the marshmallow travels,
so it free-falls, with no air resistance;
-- the event is happening on Earth,
where the acceleration of gravity is 9.81 m/s² .
b). You need to find how much LESS than 5 meters
the marshmallow falls in 0.83 second.
c). You can use whatever equations you like.
I'm going to use the equation for the distance an object falls in
' T ' seconds, in a place where the acceleration of gravity is ' G '.
d). To see how this all goes together for the solution, keep reading:
The distance that an object falls in ' T ' seconds
when it's dropped from rest is
(1/2 G) x (T²) .
On Earth, ' G ' is roughly 9.81 m/s², so in 0.83 seconds,
such an object would fall
(9.81 / 2) x (0.83)² = 3.38 meters .
It dropped from 5 meters above the pavement, but it
only fell 3.38 meters before something stopped it.
So it must have hit something that was
(5.00 - 3.38) = 1.62 meters
above the pavement. That's where the head of the unsuspecting
person was as he innocently walked by and got clobbered.
