Leslie Ballentine develops in QM: A Modern Development an interpretation based on the ensemble interpretation, and responds to most criticisms.

My question: what criticisms still exist against this interpretation such that it is not recognized as the standard interpretation within the physics community?

What problems still exist?

http://en.wikipedia.org/wiki/Ensemble_interpretation

A 1.50-kg block is on a frictionless, 30 degrees inclined plane. The block is attached to a spring (k = 40.0N/m ) that is fixed to a wall at the bottom of the incline. A light string attached to the block runs over a frictionless pulley to a 60.0-g suspended mass. The suspended mass is given an initial downward speed of 1.40m/s. How far does it drop before coming to rest? (Assume the spring is unlimited in how far it can stretch.)

y = _____ m

Please show steps I am confused.

1) explain why we see the moon rise 52 minutes later each evening, and 2) explain why the moon looks different sizes over the course of a month.

A 0.25kg ball moving in a horizontal cirlce at the end of a string has a centripetal acceleration of 4m/s^2. What is the magnitude of the centripetal force exerted by the string on the ball to produce this acceleration?

7. Ball X of mass 1.0 kg and ball Y of mass 0.5kg travel toward each other on a horizontal surface. Both balls travel with a constant speed of 5 m/s until they collide. During the collision, ball Y exerts an average force with a magnitude of 40N for 1/6s on ball X . Which of the following best predicts ball momentum after the collision?

A Ball Y will travel at a speed less than 5 m/s in the same direction of travel as before the collision.

B Ball Y will travel at a speed less than 5 m/s in the opposite direction of travel as before the collision.

C Ball will travel at a speed greater than 5 m/s in the same direction of travel as before the collision.

D Ball Y motion cannot be predicted because the impulse on it is not known.

The answer is C but I do not understand why. Please refrain from using any Calculus

Twins are sliding a rock back and forth on a frozen lake with negligible friction. The mass of each child is 21.0 kg and the mass of the rock is 2.6 kg. Each time the rock is given a push by the child who just caught it, it leaves the hand with a speed of 1.8 m/s relative to the child's hand.

A. The twins are intitially at rest and the sister first slides the rock toward her brother in the positive direction. What is the speed of the sister after she releases the rock?
m/s
B. The brother receives the rock. What is his velocity after he has received it?
m/s
C. The brother then slides the rock to his sister. What is his velocity after he releases the rock?
m/s
D. The sister catches the rock. What is her velocity now?
m/s
E. Can the game go on forever?

a.) no

b.) Cannot be determined    

c.) yes

Explain how to convert solar energy to electricity?.

A hollow sphere of radius 0.230 m, with rotational inertia I = 0.0323 kg·m2 about a line through its center of mass, rolls without slipping up a surface inclined at 10.2° to the horizontal. At a certain initial position, the sphere's total kinetic energy is 13.0 J. (a) How much of this initial kinetic energy is rotational? (b) What is the speed of the center of mass of the sphere at the initial position? When the sphere has moved 1.40 m up the incline from its initial position, what are (c) its total kinetic energy and (d) the speed of its center of mass?

Describe house wiring and specify how parallel or series connections of bulbs and resistors affect the functions.Write in own words and at least one paragraph.

Why do resistors placed in parallel allow a total current that is the sum of the currents that would occur for the individual resistors placed one by one in the same circuit? Explain in terms of Ohm's Law

Show step by step solution please.

A sled weighing 100 N is pulled horizontally across a frozen lake such that the coefficient of kinetic friction between the sled and the snow is 0.1. Penny is riding the sled and she weighs 195 N. If the coefficient of static friction between Penny and sled is 0.7, find the maximum horizontal force which can be applied to the sled before she begins to slide off.

A 900-kg car traveling east at 20.0 m/s collides with a 750-kg car traveling north at 15.0 m/s. The cars stick together. Assume that any other unbalanced forces are negligible. (Draw Diagrams)

(a) What is the speed of the wreckage just after the collision?

(b) In what direction does the wreckage move just after the collision?

(c) What is the total Kinetic Energy before the collision?

(d) What is the total Kinetic Energy after?

In the manufacture of steel engine components radioactive iron (59Fe) is included in a total mass of 0.20 Kg. The component is placed in a test engine with surrounding oil lubricant when the activity due to the isotope is 20.0

A 4.3- cm-radius ball rolls down an inclined plane from rest at the top. The angular acceleration of the rolling ball about its center is 245 rad/s², and its angular speed at the bottom is 44.4 rad/s. How long is the plane?