So Hooke's law says that that law is proportional to how much I stretch the spring. Alright. So f=kx<span>. x is the length of the spring now minus its length when it's relaxed and nobody's pulling on it. k is a constant called the spring constant.</span>
Answer:
The minimum uncertainty in its position is 1.1587 nm
Explanation:
Given;
average speed of electron, v = 5.00 × 10⁶ m/s
percentage of speed uncertainty = 1%
Δv = 0.01( 5.00 × 10⁶ m/s) = 5.00 × 10⁴ m/s
Applying Heisenberg's uncertainty principle, to determine the uncertainty in its position.
ΔxΔP ≥ h/4π
Δx(mΔv) ≥ h/4π
Δx = h/4πmΔv
where;
Δx is uncertainty in its position
h is Planck's constant
m is mass of electron
Δx ≥
Δx ≥ 1.1587 nm
Therefore, the minimum uncertainty in its position is 1.1587 nm
The forces on the y axis are:
N-mgcos(60)=0 , wich becomes
N=mgcos(60)
Rember that the friction force is always contrary to the motion of an object and its formula is f=μ * N
The forces in the x axis are:
-f + mgsin(60)= m * a
-μ*mgcos(60) + mgsin(60)=m*a ,
μ = ( m*a - mgf=μ[sin(60) )/ ( mgcos(90) )
Answer:
a) from the hotter object to the cooler object
Explanation:
temperature moves by conduction, which is associated with the movement of atoms or molecules and the always move from hight temperatures to lower temperatures to attain thermal equilinrium of the system.
so when two objects are placed together and have different temperatures then the system is not in thermal equilibrium and to attain it, temperature can only move to coller object and not from the coller object according to thermodynamics.