Answer:
The length of the rod should be
Explanation:
Period of simple pendulum is given by
We have
The length of the rod should be
Answer:
4090909
Explanation:
Thickness of one bill = 0.11 mm
Total thickness = 450 m
No of $1 bills = total thickness / thickness of one bill
No of $1 bills = 450 / 0.11 × 10^-3
= 4090909
Answer:
You will have 4.5 million dollar
Explanation:
The thickness of a $1 bill is 0.11 mm
So we have
1 $ = 0.1 mm
0.1 mm = 1 $
0.0001 m = 1 $
1 m = 10000 $
450 m = 450 x 10000 = 4500000 $
So you will have 4.5 million dollar
Answer:
Use proportions to find the scale of the first photo, then use that scale and other given information to fill in the equation
S=f/(H-h)
Where:
S = scale of the photo
f = focal length of the camera (in feet)
H = flying height
h = average elevation
Answer:
The correct option is D
Explanation:
From the question we are told that
The maximum electric field strength is
The area is
Generally the force the laser applies is mathematically represented as
Here
=>
Answer:
Statement 3 is correct.
Heisenberg's uncertainty principle explains that the measurement of an observable quantity in the quantum domain inherently changes the value of that quantity
Explanation:
Classical mechanics is the study of motion of big, relatable bodies that we come in contact with in our day to day lives.
Quantum mechanics refers to this same study, but for particles on a subatomic level.
Obviously, Classical mechanics' theories and principles were first discovered and they worked for their intended uses (still work!). But when studies on particles on a sub-atomic level intensified, it became impractical to apply those theories and principles to these sub-atomic particles that displayed wave-particle duality nature properly.
Heisenberg's Uncertainty principle came in a time that explanations and justifications were needed to adapt these theories to sub-atomic particles.
The principle explains properly that it is impossible to measure the position and velocity (momentum) of a sub-atomic particle in exact terms and at the same time.
Mathematically, it is presented as
Δx.Δp ≥ ℏ
Where ℏ= adjusted Planck's constant.
ℏ= (h/2π)
And Δx and Δp are the uncertainties in measuring the position and momentum of sub-atomic particles.
The major reason for this is the wave-particle duality of sub-atomic particles. They exist as waves and particles at the same time that a complete knowledge of their position mean that a complete ignorance of their velocity and vice versa.
Taking the statements one at a time
Statement 1
Quantum Mechanics studies sub-atomic particles which are mostly always in motion. So, this is false.
Statement 2
It is impossible to calculate with accuracy both the position and momentum of particles in quantum mechanics not classical mechanics. As stated above, the reason for the uncertainty is the wave-particle duality of sub-atomic particles which the particle in classical mechanics do not exhibit obviously enough.
Statement 3
Any attempt to measure precisely the velocity of a subatomic particle, will knock it about in an unpredictable way, so that a simultaneous measurement of its position has no validity.
An essential feature of quantum mechanics is that it is generally impossible, even in principle, to measure a system without disturbing it. This is basically the uncertainty principle rephrased. This is the only true statement.
Hope this Helps!!!
As we know that current is defined as rate of flow of charge
so by rearranging the equation we can say
here we know that
here we will substitute it in the above equation
now here limits of time is from t = 0 to t = 1/180s
so here it will be given as
so total charge flow will be 0.44 C
Answer:
The total charge passing a given point in the conductor is 0.438 C.
Explanation:
Given that,
The expression of current is
....(I)
We need to calculate the total charge
On integrating both side of equation (I)
Hence, The total charge passing a given point in the conductor is 0.438 C.
As we know from kinematics
So it will turn by 18 radian