i thinks answers is gap relutance increases linearly with magnetic density
PV=nRT
(P)(.010)=(n)(.08201)(0)
(v1/t1)=(v2/t2)
(.010/t1)=(v2/0)
The volume would be zero
Answer:
Explanation:
Volume of lead object = volume of aluminium object = V
mass of lead object > mass of aluminium object
When both the objects immersed in water, the buoyant force acting on both the objects.
Buoyant force = Volume immersed x density of water x gravity
As the volume of both the objects is same, so the buoyant force acting on both the objects is same.
So, weight in air of lead object is more than the weight in air of aluminium object.
Answer:
d = 13.7 m
Explanation:
When block is moving upwards along the inclined plane
then the block is decelerated due to gravity as well as due to friction and speed of the block by which it is projected upwards is given
deceleration caused to the block due to net force opposite to the motion is given as
since block is sliding on the inclined plane
so here we can say that the coefficient of the friction must be kinetic friction here
now for finding the distance upto which it will stop is given as
To solve this problem we will use the concepts related to the uniform circular movement from where we will obtain the speed of the object. From there we will go to the equilibrium equations so that the friction force must be equal to the centripetal force. We will clear the value of the coefficient of friction sought.
The velocity from the uniform circular motion can be described as
Here,
r = Radius
T = Period
Replacing,
From equilibrium to stay in the circle the friction force must be equivalent to the centripetal force, therefore
Here,
Coefficient of friction
N = Normal Force
m = mass
v = Velocity
r = Radius
The value of the Normal force is equal to the Weight, then
Rearranging to find the coefficient of friction
Replacing,
Therefore the minimum coefficient of friction to prevent the cat from sliding off is 0.9399