Exercise 6:

A) How does the Heisenberg Uncertainty (with momentum and position) force us to abandon a deterministic universe?

B) In what important ways is the Bohr model of the atom incompatible with quantum theory? Include the concept of orbits and what is known about angular momentum.

Why may the levels of radiation exposure be greater inside of some buildings than in open spaces?

Explain how the The Twin Paradox paradox arises when we use our everyday experience of space and time as absolutes. To the best of your ability, resolve the The Twin Paradox paradox.

1. Microwaves have wavelengths ranging from about one meter to one millimeter. What are the ranges of energies and frequencies of microwaves?

Why does the cosmic ray intensity vary

a. with altitude and,

b. with latitude?

A cubical piece of heat-shield-tile from the space shuttle measures 0.09 m on a side and has a thernal conductivity of 0.065 J/(s m C°). The outer surface of the tile is heated to a temperature of 1,219°C, while the inner surface is maintained at a temperature of 24°C.

(a) How much heat flows from the outer to the inner surface of the tile in 7.8 minutes?

Number: __________  Units: __________

(b) If this amount of heat were transferred to 3.2 litres (3.3 kg) of liquid water, by how many Celsius degrees would the temperature of the water rise?

Take c_water = 4186 J/kg

Number: __________  Units: __________

Which line is perpendicular to a line that has a slope of ?

line AB

line CD

line FG

line HJ

1/2?

!. What is the center of mass (COM) of an object? 2. Where is the center of mass located on an object? What factors influence its location? 3. List at least 2 ways to find or locate the center of mass of an object? 4.How does symmetry affect the location of an object's center of mass? 5. What does COM have to do with stability of an object, and whether it falls over? 6. Put your heels against a wall, and without bending your knees, touch your toes, Explain what happened below. Explain why it may happen to somaone else?

PLEASE TYPE!

Type a letter, minimum of 1 page, on how you would advise a 25 year old starting out in their career on preparing for retirement. Be sure to address all of the following items in your letter:

1. Include a salutation and address your letter to an acquaintance, friend, relative, or future/current/past self.
2. Explain what this letter is about.
3. Explain why your reader should listen to you? Share a little bit of background on how and when you learned about this topic.
4. Share at least one of the advantages of starting to save early and the impact that it has on savings. Provide explanations or facts from your readings and/or calculations to support your reasoning.
5. Share at least one tip or suggestion on a way to start a long-term savings account for retirement. Provide explanations or facts from your readings and/or calculations to support your reasoning.
6. Include a salutation and close the letter with your name (Just put "Name").

Captain Sarfo is examining the trip manifest for round trip for his personnel carrier, and is trying to plan how much food to bring. His typical run goes from Ganymede station to Mars. As such, he flies Martians almost exclusively, and  plans his trips by approximating food consumption using passenger height. Since transporting excess weight increases fuel costs significantly, Captain Sarfo relies heavily on the accuracy of this prediction (going over or under is very undesirable).

Today, there is a conference on Mars, and Captain Sarfo’s first officer warns him that ¼ of his passengers will be Belters for this trip, and 1/5 will be Earthers. Earthers eat more than Martians, and Belters eat much less.

a)         If Belters and Earthers are approximately the same height as Martians, how will this complicate Captain Sarfo’s estimates? Please be specific.

b)         Using his old estimates, Captain Sarfo knows that a Martian standing 1.7 meters eats 1.4 kilos of food in a day, and that amount increases linearly with height. If we assume that Belters’ and Earthers’ consumption ALSO increases linearly, then what pieces of information would we need to improve Captain Sarfo’s estimates over his original method?

PHYS_LAB
Electric Fields and Charge
Introduction
5p Aim
25p Explain electric field in 2 sentence:)

Material- Method
20p     Describe the electric field experiment in 4 step

(1) The HotBeverages Company has a cup that reduces the temperature of a liquid from 200 F to 100 F in 30 minutes by maintaining a constant temperature of 70 F.

(2) The BestSupplies Company has a cup that reduces the temperature of a liquid from 200 F to 110 F in 25 minutes by maintaining a constant temperature of 60 F.

(3) The MountainGrown Company has a cup that reduces the temperature of a liquid from 200 F to 120 F in 20 minutes by maintaining a constant temperature of 65 F.

You need to recommend which cup the restaurant should purchase. Use the questions below to make a presentation of your recommendation with a documented explanation of the recommendation to the restaurant.

(a)Use Newton’s Law of Cooling to find a function relating to the temperature of the liquid over time for each cup. ?(?) = ? ∙ ? ?? + ?? where ?(?) is the temperature of the object after a given time ? is a constant found from the initial temperature of the object ? is a constant for the continuous rate of cooling of the object

(b)Graph the three functions on a single set of axis using Excel.

(c)How long does it take each cup to lower the coffee temperature from 200 F to 130 F?

(d)How long will the coffee temperature remain between 110 F and 130 F for each cup?

(e)Eliminate one of the cups from your decision. Why did you eliminate this cup?

(f) Complete the market analysis worksheet below for the remaining two cups. What is your final probability vector? How long will it take to get to your final probability vector? What does this mean?

(g)Which company would you recommend to the restaurant? Explain your reasoning.

(h)How might the cost of the container affect your decision?

Spitting cobras can defend themselves by squeezing muscles around their venom glands to squirt venom at an attacker. Suppose a spitting cobra rears up to a height of 0.400 m above the ground and launches venom at 4.00 m/s, directed 59.0° above the horizon. Neglecting air resistance, find the horizontal distance (in m) traveled by the venom before it hits the ground.

A spherical raindrop falling through fog or mist accumulates mass due to condensation at a rate proportional to its cross-sectional area multiplied by the velocity.
a. Calculate the acceleration of the raindrop in terms of its radius and velocity. The raindrop starts from rest and has almost zero size.
b. If a terminal velocity of 10 m/s is reached at a raindrop radius of 1 mm, find the proportionality constant for the increase in the raindrop's mass with velocity.
c. find the relationship between the raindrop radius, r, and the height dropped, y. [Hint: v = dy/dt]
d. How far does the raindrop fall as it grows to a size of 1 mm?