Two friends are playing golf. The first friend hits a golf ball on level ground with an initial speed of 43.5 m/s at an angle of 32.0° above the horizontal

. (a) Assuming that the ball lands at the same height from which it was hit, how far away from the golfer, in meters, does it land? Ignore air resistance.

(b) The second friend hits his golf ball with the same initial speed as the first, but the initial velocity of the ball makes an angle with horizontal that is greater than 45.0°. The second ball, however, travels the same horizontal distance as the first, and it too lands at the same height from which it was hit. What was the angle in degrees above horizontal of the initial velocity of this second golf ball? Ignore air resistance. ° above the horizontal

On a frictionless table, two stationary balls are placed along the y-axis with their contact being centered on the origin of the XY-plane. A third ball moves along the x-axis toward the pair with an initial velocity V. What will be the velocity (magnitude and angle) of all three balls after the collision? Assume that the three balls are physically identical and that the collisions are perfectly elastic. Show all work and explain the results.

Suppose that a parallel-plate capacitor has circular plates with radius R = 28 mm and a plate separation of 5.5 mm. Suppose also that a sinusoidal potential difference with a maximum value of 140 V and a frequency of 77 Hz is applied across the plates; that is,

V = (140 V) sin[2π(77 Hz)t].

Find B_max(R), the maximum value of the induced magnetic field that occurs at r = R.

You throw a baseball of mass 178 g horizontally from the top of a very tall tower with an initial speed of 11.5 m/s. Determine the magnitude of the vertical component of the ball's velocity 3.2 s after it is thrown. Air resistance can be neglected.

Summarize the Acoustic Theory of Speech/Vowel Production

Two thin, isolated, concentric conducting spheres of radii 1.10 cm and 7.70 cm, have net charges of 13.50 nC and 4.00 nC, respectively. Use the sign of the field to indicate direction, thus a positive electric field would point away from the center of the spheres.
a) What is the electric field at 0.660 cm from the center of the spheres?
b) What is the electric potential at 0.660 cm from the center of the spheres?
c) What is the electric field at 3.740 cm from the center of the spheres?
d) What is the electric potential at 3.740 cm from the center of the spheres?
e) What is the electric field at 8.085 cm from the center of the spheres?
f) What is the electric potential at 8.09 cm from the center of the spheres?

I have found all of the electric fields but don't know how to find the electric potential.

Possible Duplicate:
What is a complete book for quantum field theory?

At the moment I am studying

Piron: Foundations of Quantum Physics,

Jauch: Foundations of Quantum Mechanics, and

Ludwig: Foundations of Quantum Mechanics

All of them discuss nonrelativistic quantum mechanics.

Now my question is, if there are corresponding approaches to quantum field theory (in particular aiming to the standard model of particle physics).

Edit (in response to noldorin's comment): I think if one knows the books mentioned above, the question is not very vague. Take for example Ludwigs approch. For instance it is written with the aim in mind to provide clear foundations of nonrelativistic quantum mechanics which match Ludwigs epistemological theory about physics ("A new foundation of Physical Theories"). It is axiomatic, mathematical sound, emphasises the idea of preperation and registration procedures, uses the mathematical language of lattice theory etc. However since I am studying this book at the moment I might miss some important points in Ludwigs approach. So I ask a bit vague if there is an approach to QFT which corresponts in your view to Ludwigs approach to nonrelativistic quantum mechanics in the most essential points (from your point of view) (in style, epistemological background, mathematical language etc.). Perhaps there are students of Ludwig which transfered and developed his ideas for QFT as well, I don't know

Use Voice Onset Time to explain what it means when we say that we perceive speech sounds categorically? Be sure to talk about discrimination

A 960kg car is at the top of a 46m -long, 2.5 ? incline. Its parking brake fails and it starts rolling down the hill. Halfway down, it strikes and sticks to a 1210kg parked car.
Part A-

Ignoring friction, what's the speed of the joined cars at the bottom of the incline?

Express your answer to two significant figures and include the appropriate units.


Part B-

What the first car's speed would have been at the bottom had it not struck the second car.

Express your answer to two significant figures and include the appropriate units.

You are planning a trip to go see relatives for the Holiday Break. You know your relatives live in a city which is 250 km away. If you can average a speed of 60 mile per hour, how long will you need to plan to get there?

a) 15000 minutes

b) 4.2 hr

c) 9300 sec

d) 160 minutes

For an average human, the actual values of the densities of the fat and lean tissues are ρ_f = 0.9 g/cm³, and ρ_l = 1.1 g/cm³ respectively (fat tissue =ρ_f and lean tissue =ρ_l). Given these values, are there limitations on the body fat percentage of a human that can be suspended in a body of water? Explain your thoughts and calculate the limits if any.

HINT:

• What are the maximum and minimum possible densities of a human? Is it possible for objects with each of these densities to be suspended in (as opposed to floating on top of) water?

PLEASE PROVIDE AN EXPLANATION

2.

a) Why does the Doppler effect differ in the case where the source moves to the fixed observer, from the one in which the observer moves to a fixed source?

b) Explain what the resonance effect consists of. Give an example.

Please answer the questions with maths! and explain physically, thank you in advance !

How many fringes appear between the first diffraction-envelope minima to either side of the central maximum in a double-slit pattern if λ = 699 nm, d = 0.200 mm, and a = 36.9 µm? (b) What is the ratio of the intensity of the third bright fringe to the intensity of the central fringe?