Answer:
98 N
Explanation:
The weight of an object is given by:

where
m is the mass of the object
is the acceleration due to gravity
In this problem, the mass of the lemur is m=10 kg, so its weight is

The river provides fertile soil for farming
To solve this problem it is necessary to apply the concepts related to the concept of superposition and the fringe separation for double slit experiment.
The equation can be written as

Where
= Distance between fringes
x = distance between slits and screen
d = Distance between slits
= Wavelength
Our values are given as
d= 0.08mm
x =3m

In this way replacing in the equation,




Therefore the distance between the fringes is 2.37cm
PART B) For the case in which it is submerged in water it is necessary to apply the relationship of the fringes with the index of refraction therefore



Answer:
f=1/t is the equation of frqency
Answer:
because isotope are elements that contains same amount of protons