Show Klein- Gordon Equation have Negative probability and Negative Energies!
Detailed Explanation please!
what steps should be taken in general to check for any theory or equation?

what is the gravitational acceleration ON the surface of Mars, if its mass is 6.39∙1023 kg, and the
radius is 3.39∙106 m? (b) How many times is this acceleration greater than the gravitational
acceleration at the location OF Mars, provided by the Sun (mass of the Sun is 1.99∙1030 kg, and the
radius of Mars’ orbit is 2.28∙1011 m)? (c) If it takes Mars 687 days to complete one revolution around
the Sun, calculate Mars’ tangential and the angular velocity

A vertical spring with k = 490 N/m is standing on the ground. You are holding a 5.8 kg block just above the spring, not quite touching it.

(a) How far does the spring compress if you let go of the block suddenly?
m

(b) How far does the spring compress if you slowly lower the block to the point where you can remove your hand without disturbing it?
0.116 m is the answer I got and know how to get

(c) Why are your two answers different?

I think it is because one of them includes kinetic energy and the other doesn't

PLEASE USE MY VALUES AND EXPLAIN ANSWER! Do not answer if you are not sure...

1) Suppose you have particle on a ring with the wavefunction1:

?_m(?) = 1/(sqrt(2pi)) * e^(im(?))

(m = 0, ±1, ±2, …)

a. Do you know anything about where the particle is on the ring? Does

m matter in this determination?

b. Do you know the angular momentum exactly?

2) Suppose the same particle were described with the wavefunction2:

?_m (?) = 1/(sqrt(2pi)) * cos (m?)

(m = 0, ±1, ±2, …)

c. Now do you know anything about where the particle is on the ring?

Does m matter in this?

d. Do you know the angular momentum exactly?

e. Re-write your wavefunction2 in terms of exponential functions and

use this to explain your answer to d.

Describe the fundamental physics of the erosion of creek beds in function of the radius of the particle.

A horizontal 808-N merry-go-round is a solid disk of radius 1.54 m, started from rest by a constant horizontal force of 50.9 N applied tangentially to the edge of the disk. Find the kinetic energy of the disk after 3.08 s.

Answer all questions in the space provided. For each problem, label all parts, show equation, substitution (with units), and answer (with units, scientific notation, rounded to 3 significant figures).

4. A string is attached between two barriers which are separated by 2.0 m. The speed of waves on the string is 150 m/s.

1. Find the wavelength 1^st harmonic of a standing wave generated between these two barriers.
2. Find the frequency 1^st harmonic of a standing wave generated between these two barriers.
3. Find the wavelength of 5^th harmonic.
4. Find the frequency of 5^th harmonic.

The speed of sound in air is 343 m/s.

1. Find the following for a 2 m wavelength sound wave.
   1. The frequency.
   2. The period.

three charged particles are placed at the corners of an equilateral triangle of side 1.20m. the charges are q1 =3.0 q2=-.85uc and q3= -6.0uc. Calculate the magnitude and direction of the net force on each s
ide due to the other two. assume the +x axis points to the right that is from q2 to q3.

q2 to q3 is along x axis q1 is above it.

please show steps.

Calculate what the Sun's rotation period should be so that its deviation from a perfect spherical symmetry was 1%.

Problem 5

a) Show that green light (λ = 5 x 10-7 m) can excite electrons across the band gap of silicon (Si).

b) i. Electromagnetic radiation of frequency 3.091 x 1014 Hz illuminates a crystal of germanium (Ge). Calculate the wavelength photoemission generated by this interaction. Germanium is an elemental semiconductor with a band gap, Eg, of 0.7 eV. ii. Sketch the absorption spectrum of germanium, i.e., plot % absorption vs. wavelength, λ.

c) Potassium (K) and beryllium (Be) are metals which exhibit good electrical conductivity. Explain for both elements the reasons for the observed conductivity on the basis of the band structure.

d) A pure crystalline material (no impurities or dopants are present) appears red in transmitted light. i. Is this material a conductor, semiconductor or insulator? Give the reasons for your answer . ii. What is the approximate band gap (Eg) for this material in eV?

e) An unknown material is transparent to light of frequencies ( ν ) up to 1.3 x 1014 s–1 . Draw a meaningful schematic band structure for this material.

(This has to do with Physics)

6.1.1 How does a capacitor charge?

6.1.2 How does a capacitor discharge?

6.1.3 What is the time constant?

6.1.4 What are the units to τ?

How are research methodologies validated?

Two skydivers are holding on to each other while falling straight down at a common terminal speed of 63.10 m/s. Suddenly, they push away from each other. Immediately after separation, the first skydiver (who has a mass of 89.30 kg) has the following velocity components (with "straight down" corresponding to the positive z-axis):

v1x=4.93 m/s      v1y=3.75 m/s     v1z=63.1 m/s

What are the x- and y-components of the velocity of the second skydiver, whose mass is 57.70 kg, immediately after separation?

What is the change in kinetic energy of the system?

What are the specific contributors to both an internal and external force? Be specific related to passive and active structures.

A delta connected load has a parallel combination of resistance 5Ω and capacitive reactance –j5Ω in each phase. If a balanced three phase 400V supply is applied between lines, find the phase currents and line currents and draw the phasor diagram