Describe static and dynamic methods of determining the force constant of a spring.

briefly describe how different characteristic of motion are reflected by Position vs. time graphs and Velocity vs. time graphs

Looking at a football match, which of the following describes an event CONSISTENT with the study of Classical Mechanics?

a) The ball gains speed by bouncing into a puddle after a player kicks.

(b) A ball leaves the player's foot without rotation and, after colliding with the crossbar, returns to the player's feet faster than at the start of the kick.

c) In a soccer game, there is no mechanical phenomenon related to the study of physics.

d) The fact that the boot is of large or small nails, of metal or plastic, making the player slip more or less on rainy days, concerns the study of universal gravitation.

e) The encounter between a player's boot and the ball at the time of the kick is an example of a partially elastic shock in which there is a transfer of energy and momentum. ”

Analyzing the alternatives of the above question, we can observe in item “a” a phrase widely used by narrators and sports commentators in their radio and TV broadcasts. This phrase contains one of the many conceptual distortions in physics presented in sports broadcasts. Research and present in the COLLABORATIVE CHALLENGE other phrases that exemplify the extremely distorted view of physics.

How could we justify the goalkeeper's difficulty catching a kick in a rainy soccer match? Review the examples presented by your colleagues and indicate the misconceptions in the sentences. What do you think is the convincing power that a statement of this size can inadvertently wield in the minds of sports aficionados?

A pendulum with a length of 35 cm swings back and forth as shown in the figure above, at each turn around point it stops and it starts accelerating until reaching maxium velocity at the botton (equilibrium position), at which point it starts slowing down. If the maximum angle is 48 degrees, what is its maximum velocity in m/s? (Use g = 10.0 m/s2 and assume there is no friction)

1. A particle satisfying the time-independent Schrodinger equation must have

a) an eigenfunction that is normalized.

b) a potential energy that is independent of location.

c) a de Broglie wavelength that is independent of location

d) a total energy that is independent of location.

Correct answer is C but I need detailed explanation

also explain each point why they are false

let R be a region bounded by x = 0 and x =1 and y = 0 and y = 1. Suppose the density is given by 1/y+1.Notice that R is denser near the x axis. As a result we might expect the centre of mass to be below the geometric center(1/2,1/2). Also since the density does not depend on x we do expect moment of inertia about the x axis to be 1/2. verify the moment of inertia about x is 1/2 and compute the value of the moment of inertia about the y axis

Describe the Drude model and the Sommerfeld model: the difference and the similarity, the successes and the failures of each model.

A 45 kg wooden crate is being pushed across a wooden floor with a force of 175 N. If, uk = 0.03. What is the acceleration of the crate?

6. Why do you think the inside of a car feels so much warmer than its surroundings on sunny days? a. How can you use the sim to test your ideas? b. Describe your experiment and state some evidence that explain the different temperatures on a microscopic level using photons.

Why is ionization energy (W) roughly two to three times greater than ionization potential (I)?

Multiple choice: Suppose you are searching for exoplanets using the radial velocity and transit techniques. Which exoplanets are you most likely to find?

(a) Jovian exoplanets orbiting with a large semimajor axis.

(b) Jovian exoplanets orbiting with a small semimajor axis.

(c) Terrestrial exoplanets orbiting with a large semimajor axis.

(d) Terrestrial exoplanets orbiting with a small semimajor axis.

(e) There is an equal chance of finding both jovian and terrestrial exoplanets, and an equal chance of finding ones with large and small semimajor axes.

Multiple choice: Imagine a star with a single exoplanet orbiting it. If the exoplanet’s mass were doubled, the observed Doppler-shift variations of the star would be _______. If the semimajor axis of the exoplanet’s orbit were doubled, the observed Doppler-shift variations of the star would have _______.

(a) larger; a shorter period;

(b) smaller; a longer period;

(c) larger; a longer period;

(d) the same; the same period; or

(e) smaller; a shorter period.

Multiple choice: Suppose you are measuring the brightness change of a star over time due to an exoplanet orbiting the star. What are the properties of this exoplanet that you can deduce directly from the star’s light curve (plot of brightness vs. time)?

(a) The exoplanet’s orbital period, and the ratio of its radius to the host star’s radius.

(b) The exoplanet’s orbital period and its distance from the host star.

(c) The exoplanet’s distance from its host star, and the ratio of its mass to the host star’s mass.

(d) The exoplanet’s distance from its host star and the exoplanet’s density.

(e) The composition of the exoplanet’s atmosphere.

1. An oil drop with a mass of 2.48 x10^-15kg is balanced between two parallel, horizontal plates 1.7cm apart, maintained at a potential difference of 260 V. The upper plate is positive. Calculate the charge on the drop in coulombs and as a multiple of the elementary charge. Determine whether there is an excess or a deficit of electrons.

2. Two waves with equal speeds have frequencies of this wave is 40 Hz. What is the ratio of their wavelengths?

3. A wave on a string has a frequency of 0.83Hz and a wavelength of 0.56m. Determine the wavelength when a new wave of frequency 0.45Hz is established on this string and the wave speed does not change.

Astronomers have argued for long time, what it means that the universe is expanding. The observations of redshift and supernova brightness all agree:galaxies that are further away from the Milky Way are moving away faster than than galaxies that are nearby us. But does this affect our lives on Earth? How does our knowledge of an expanding universe help us understand our place in the universe as people?

Two Earth satellites, A and B, each of mass mmm = 930 kgkg , are launched into circular orbits around the Earth's center. Satellite A orbits at an altitude of 4000 kmkm , and satellite B orbits at an altitude of 12600 kmkm
What are the potential energies of the two satellites? (in Jules)
What are the kinetic energies of the two satellites?     (in Jules)
How much work would it require to change the orbit of satellite A to match that of satellite B? (in jules)
hint this is tricky problem

What would be a mathematical model for the diffusion constant, D?

If the average total displacement in either the x or y direction is 0 for all times, why is the displacement NOT zero? How does the displacement change with time?