Physics - March 2007

Why does the pressure the gas exerts on the container walls increase?

A. The molecules are in contact with the walls for briefer intervals.
B. The molecular masses increase.
C. The molecules lose more kinetic energy each time they strike the wall.
D. The molecules have higher average speeds and so strike the walls more often with greater momentum.

2007-03-10 03:24:15 · 3 answers · asked by Anonymous

its pressure increases because what is true about its molecules?

A. They strike the container walls with greater force.
B. They strike the container walls more often.
C. They have more energy.
D. They strike the container walls at higher speeds.

2007-03-10 03:22:17 · 5 answers · asked by Anonymous

a 95.1N grocery cart is pushed 17.9m along an aisle by a shopper who exerts a constant horizontal force of 31.2N. the acceleration of gravity is 9.8m/s^2. if all friction forces are neglected and the cart starts from rest, what is the final speed ?

2007-03-10 03:15:08 · 3 answers · asked by Anonymous

A. area of the liquid surface
B. acceleration of gravity
C. liquid density
D. height of the liquid

2007-03-10 02:59:53 · 5 answers · asked by SpiderMan 1

Why do I get delays on people I call in Great Britain ? there is like a 3 second delay. Or is this George Bush monitoring my calls ?

2007-03-10 02:51:17 · 8 answers · asked by Samantha 6

I know that when the pressure is constant the process is called "isobaric", when the temperature is const. it's called "isothermal", etc. What is a process in which the "chemical potential" is constant called?

2007-03-10 02:48:46 · 1 answers · asked by Smurfette 1

2007-03-10 02:45:42 · 4 answers · asked by neha 2

2007-03-10 01:46:10 · 1 answers · asked by Mark P 1

2007-03-10 00:56:56 · 14 answers · asked by Wondering 2

To be more specific, Shirley Ann Jackson.What did she do as a theoretical physicist?

2007-03-10 00:53:09 · 2 answers · asked by Anonymous

the generator is work on the principle of fleming right hand rule but motor on the fleming left hand rule.generator convert from mech. energy to electrical energy but motor convert from electrical to mechanical energy.

2007-03-10 00:44:32 · 4 answers · asked by Asghar Alam S 1

the generator is work on the principle of fleming right hand rule but motor on the fleming left hand rule.generator convert from mech. energy to electrical energy but motor convert from electrical to mechanical energy.

2007-03-10 00:44:09 · 2 answers · asked by Asghar Alam S 1

2007-03-10 00:41:37 · 9 answers · asked by munna 1

hihi, i just read the book 'the physics of superheroes' and am rather interested with the physics of the Flash. Inside a chapter, it is mentioned that the speed of the Flash can be so fast, such that the probability of conducting quantum tunneling can become a certainty. However, i will like to ask how this is reflected in the Schrodinger equation. Can some1 explain it to me? Thank you very much... :)

2007-03-10 00:16:08 · 1 answers · asked by YoherZ 1

2007-03-09 23:59:41 · 4 answers · asked by wencar29 1

A crate is pulled 3.0 m at constant velocity along a 30 degreeincline. The coefficient of kinetic friction between the crate and the plane is 0.20. Calculate the efficiency of this procedure

2007-03-09 23:53:46 · 4 answers · asked by Amiraan 4

ans should be according to buoyant force

2007-03-09 23:47:25 · 6 answers · asked by leena 1

2007-03-09 23:31:05 · 10 answers · asked by Anonymous

2007-03-09 23:24:47 · 8 answers · asked by Big guy 1

I saw an ad for this book in a recent Science News magazine and it sounds really intriguing!! Yet I cannot find any info on either it or the author, H.S. Akrongold..yet.

2007-03-09 22:22:57 · 3 answers · asked by Stan 2

more complicated forces are required

2007-03-09 21:43:46 · 8 answers · asked by jiju_justus 1

2007-03-09 21:41:34 · 6 answers · asked by gokul s 1

explain briefly

2007-03-09 20:58:16 · 6 answers · asked by Anonymous

2007-03-09 20:57:14 · 7 answers · asked by PatrickS 1

2007-03-09 20:44:06 · 10 answers · asked by LEE S 1

2007-03-09 20:43:06 · 7 answers · asked by Anonymous

for example a person jumping out of a plane without parachute from 32000 feet high ... by the time he hits the ocean surface he would have reached really great speeds??? will the water give in or will it just act as a solid at the moment of impact?

2007-03-09 20:42:02 · 6 answers · asked by chan 1

explain in brief

2007-03-09 20:41:11 · 12 answers · asked by nikesid 2

how many "g's" (a unit of acceleration equal to the acceleration of gravity i.e 9.8 m/s^2) can a rocket produce if it accelerates horizontally from 0 to 1600 km/h in 1.8 seconds? what distance will it cover during that time?

2007-03-09 20:26:35 · 5 answers · asked by princess 1

I have never managed to keep a thermometer more than a few months. After even a slight shock, the top of the mercury column splits and the reading loses accuracy. Is there any way to get the mercury back in one piece? Heat it up to the maximum? (but not too far past it...) or cool it down to the minimum? Any thought anyone? Many thanks

2007-03-09 20:10:18 · 6 answers · asked by Anonymous