Answer:
correct option is C) 2.8
Step-by-step explanation:
given data
string vibrates form = 8 loops
in water loop formed = 10 loops
solution
we consider mass of stone = m
string length = l
frequency of tuning = f
volume = v
density of stone =
case (1)
when 8 loop form with 2 adjacent node is
so here
..............1

and we know velocity is express as
velocity = frequency × wavelength .....................2
= f ×
here tension = mg
so
= f ×
..........................3
and
case (2)
when 8 loop form with 2 adjacent node is
..............4

when block is immersed
equilibrium eq will be
Tenion + force of buoyancy = mg
T + v ×
× g = mg
and
T = v ×
- v ×
× g
from equation 2
f ×
= f ×
.......................5
now we divide eq 5 by the eq 3

solve irt we get

so
relative density 
relative density = 2.78 ≈ 2.8
so correct option is C) 2.8
A. 2
b. 0
c. -2
d. 0
f(x) just means that the number in the parentheses is the x-value and if it asks for f(x) it wants the y-value at that x point
Answer:
According to the “Hare Psychopathy Checklist” a psychopath is a person who knows right from wrong in our society but often feels no guilt, remorse or empathy when they engage in wrong actions. They lie easily, blame others for their actions and often hurt people who are close to them. David Berkowitz meets the criteria of Hare’s checklist and is believed to be a true psychopath. Berkowitz is known as the “Son of Sam”, a thrill seeking serial killer who terrorized the city of New York for over a year. Information about David Berkowitz’s background, personality traits and lifestyle and his serial killer profile help to prove that he is in fact a psychopath. In conclusion, this essay will prove to readers that David Berkowitz is a notorious…
Step-by-step explanation:
Answer:
8 miles
Step-by-step explanation:
We start by calculating the distance between the two points
To calculate this, we use the distance formula
Let the distance be D
We have the formula as;
D = √(x2-x1)^2 + (y2-y1)^2
D = √(-2+2)^2 + (-5-3)^2
D = √(64)
D = 8 units
Since 1 unit is 1 mile,
then 8 units will be 8 * 1 = 8 miles