Answer:
Gravity
Explanation:
The answer is gravity because when the 3 masses were hung from the spring, gravity pulled the spring towards the ground.
Ivan Pavlov was the researcher that first realized that certain psychic secretions pointed to a simple but important form of learning.
The way he figured this out was when dogs paired certain things with food, and because of this, the dogs started salivating.
Answer:
Explanation:
Speed of van, v = 28 m/s
Radius of unbanked curve, r = 150 m
Let 
is the angle with the vertical. In case of banking of road,
.............(1)
And
..........(2)
From equation (1) and (2) :
So, the string makes an angle of 28.07 degrees with the vertical. Hence, this is the required solution.
according to the question are microwaves and X-rays
Answer:
q1 = q₂= -3
therefore each sphere has the same charge of -3 untis
Explanation:
The metallic spheres have mobile charge, so when the two spheres come into contact the total charge
Q_total = q₁ + q₂
Q_total = -2 -4
Q_total = -6 units
it is distributed in between the two spheres evenly since the charges of the same sign repel each other.
When the spheres separate each one has
q₁ = -6/2
q1 = q₂= -3
therefore each sphere has the same charge of -3 untis
