For ALL problems, state hypotheses, in words and symbols and give me everything listed below. Use SPSS when appropriate but DO NOT print out and turn in SPSS output.  Instead, just read the critical information out of SPSS and report: obtained t-statistic, probability of obtaining that statistic under the null (p-value), decision to reject null or not, interpretation of results in words, and report measure of effect size if appropriate.

1. I want to know if rats with an exercise wheel in their cages end up healthier (less chubby) than rats without.  I know the average weight of rats without exercise wheels is 402 grams.  I take 10 rats and put an exercise wheel in their cages.  Then after a month, I weigh them and get these weights in grams:

Wheel group: 320, 240, 400, 390, 270, 300, 320, 409, 380, 460

2. I want to know if wall color affects test scores.  I randomly assign 5 students to either the blue wall group or the red wall group.  The blue group gets test scores of 87, 99, 76, 87, 80 while the red wall group gets 88, 85, 90, 76, 87.

An individual performs two drop landings from the exact same height above two different basketball floors. The first landing is onto a suspended basketball floor (hardwood suspended above the concrete/ground). The second landing is onto a traditional basketball floor (hardwood on the concrete/ground). The net vertical force acting on the individual to bring them to a stop would be ____ because the ____.

Group of answer choices

greater during the first landing : displacement along the line of action of the force would be less

the same during both landings : change in mechanical energy would be the same

less during the second landing : displacement along the line of action of the force would be greater

greater during the second landing : displacement along the line of action of the force would be less

less during the first landing : change in mechanical energy would be less

An ambulance traveling eastbound at 114.0 km/h with sirens blaring at a frequency of 6.50 ✕ 102 Hz passes cars traveling in both the eastbound and westbound directions at 59.0 km/h. (Assume the speed of sound is 343 m/s.)

(a) What is the frequency observed by the eastbound drivers as the ambulance approaches from behind? Hz

(b) What is the frequency observed by the eastbound drivers after the ambulance passes them? Hz

(c) What is the frequency observed by the westbound drivers as the ambulance approaches them? Hz

(d) What is the frequency observed by the westbound drivers after the ambulance passes them? Hz

Apply ?̂2 and ?̂?operator on the following wavefunctions,

a. ( 3 4? ) 1/2 ????

b. ( 3 8? ) 1/2 ???? ? ??

c. ( 3 8? ) 1/2 ???? ? −??

What is the result? Which is these functions are eigen functions of both operators? Is there anything else you like to conclude?

1. Consider a convex lens with a focal length of 5.50 cm. An object is located at 13.50 cm. The object is 6.00 cm tall. Draw the ray diagram to scale. Determine the image distance, the height of the image, the magnification and the characteristices of the image. Pay attention to the sign conventions and units.

2. White light shines through a diffraction grating with 7300 lines per cm. Make a table of diffraction angles for m = 1, 2, 3, ... versus the wavelengths of red and blue light. Stop when the angle is undefined. Note there may be more starts than finishes. Based on your table: How many complete diffraction patterns are there? What is the wavelength of the light diffracted at 90 degrees for the highest order incomplete diffraction pattern? Remember that the wavelength range of visible light is from 400 nm (blue) to 700 nm (red).

.

a) First, the Coulomb force is the centripetal force; set the two expressions equal to each other and solve for mv.

b) Secondly, the angular momentum of the orbiting electron is quantized. Set the expression for the classical angular momentum equal to nħ and solve the resulting equation for r.

c) For n=1, determine the orbital radius r. q=e=-1.6 x 10-19 [C] ħ=1.055x10-34 [Js] ke=9x109 [Nm2/C2] me=9.09x10-31[kg]

d) Show that the kinetic energy = -(1/2) U, where U = the electric potential energy (use the approach from part a). Then use your expression (not the value) for r in part b to write the remaining (½)U in terms of 1/n2.

e) Calculate a value for the coefficient of 1/n2 in the expression from the previous part.

f) That expression is the ionization energy in terms of the quantum number n. Write the difference in energy levels (the energy of the photon emitted) in terms of h,c and λ, set it equal to the expression in (e) and rearrange to get the same form as Rydberg’s equation.

g) Calculate the coefficient in front of the difference in 1/λ and compare to Rydberg’s constant.

ONLY DO d THROUGH g! Thank you!

In a mass spectrometer, a positive ion with charge q=1.602x10^-19 coulombs is accelerated by a potential difference of 1000 volts (Ec=-V). Once out of the influence of the electric field, a uniform magnetic field of B=0.01 weber/m² deviates it into a circular trajectory of 182m radius. Determine
a) the velocity of the ion
b) the mass of the ion in kg and in units of atomic mass.

Write a detailed definition of each of the following terms and provide an example of the term or how it would be used. Your example should demonstrate an understanding of the term and/or the role it plays in quality control/assurance.

1. MQSA
2. FDA
3. JCAHO
4. Line par resolution
5. Star test pattern
6. Pinhole camera
7. Half value layer
8. Wire mesh test
9. AEC
10. PACS
11. RIS
12. Erasure thoroughness
13. Plate uniformity
14. Grayscale
15. Luminance
16. Spatia

A point charge of 6.0 x10^-8 C sits on the floor in the middle of a room that is 10 m long. You hold a small cardboard square measuring 1.0 cm x 1.0 cm face down, and carry it across the room at a height of 2.0 m, passing over the position of the point charge. Plot the flux through the square as a function of position, but before doing so, make sure to include the following:

-An explanation of your calculation. Also, show quantitatively that the field at the center of the square is approximately the field at one of the edges.

-A table showing your calculation with the distances, E field, flux values, and other calculations you made.

-Finally, make a plot of the flux as a function of position. Axes must be properly labeled with units.

How is Q-point defined in a bipolar transistor?

Virtually no one acknowledged Newton's work during his lifetime.

True

False

What is the force of gravity (in Newtons) acting between the Earth and a 125-kg person standing on the surface of the Earth?

A planet in orbit about the Sun will move the fastest when it is ...

farthest from the Sun

closest to the Sun

closest to the empty focus

at aphelion

The statement: "Planets sweep out equal area in equal time." is also known as ...

Kepler's Second Law

Newton's Law of Gravity

Kepler's First Law

Kepler's Third Law

What is the orbital period (in years) of a planet with a semimajor axis of 35 AU?

What is the force of gravity (in Newtons) acting between the Sun and a 4,500-kg rocket that is 0.75 AU from the Sun?

What is the orbital period (in years) of a planet with a semimajor axis of 15 AU?

Virtually no one acknowledged Galileo's work during his lifetime.

True

False

Newton is credited with which of the following? [Select all that apply]

improving the telescope

single-handedly developing calculus

uncovering important properties of light

discovering principles of gravitational attraction

What is the semimajor axis (in AU) of a planet with an orbital period of 14 years?

Virtually no one acknowledged Kepler's work during his lifetime.

True

False

Gravity between two objects is __________ proportional to the product of their masses and __________ proportional to the square of the distance between them.

directly, indirectly

directly, directly

indirectly, indirectly

indirectly, directly

3. Explain the fundamental parts of the HeNe laser in details.

A circularly polarised beam of light with a vacuum wavelength of 1.55 micro meters is incident on a two cascaded quarter wave-plates, followed by a third unknown wave-plate. The light emerging from the system remains circularly polarised.

Find out the Jones vector characterizing the state of polarisation of the incident beam of light?

With proper illustrations, show the working of voltage regulator through Zener Diode

BTwo slits separated by a distance of d = 0.12 mm are located at a distance of D = 670 mm from a screen. The screen is oriented parallel to the plane of the slits. The slits are illuminated by light of wavelength λ = 525 nm. The interference pattern shows a peak at the centre of the screen (m = 0) and then alternating minima and maxima.

A- What is the path difference between the waves from the two slits at the first (m = 1) maximum on the screen?

B- What is the path difference between the waves from the two slits at the first (m = 0) minimum on the screen?