Physics - November 2006

2006-11-19 23:54:35 · 9 answers · asked by Clark Kent 1

Does anyone know if there is a website I can go to to give me an idea of what type of questions will be asked? I would like to be able to view different types of questions and answers that will be on this test so I am better prepared. Its a pre-employment test for a pipefitters apprenticeship that I hope to be able to get into this year. I did take the test last year and they told me that I came really close to being accepted ...so Id like to be able to answer more of the questions correctly to up my chances. Unfortunately for me I didnt even take a physics class in high school so for most of my answers I used my own 'common sense'. Any suggestions that could possibly help me out? Thanks.

2006-11-19 23:15:50 · 3 answers · asked by Lunchmeat 2

Say you have a pot of water that you want to boil. If you have a pot started on flat land ....on the middle of a hillside ...and one more on top of a mountain....which pot will reach the boiling point first?

2006-11-19 22:43:24 · 4 answers · asked by Lunchmeat 2

2006-11-19 22:41:40 · 4 answers · asked by Darrenj 2

Discounting the mass of it's container...

2006-11-19 22:11:09 · 1 answers · asked by AmigaJoe 3

we do not have terminal emf for a conductor rotated in earth magnetic field. why?

2006-11-19 21:09:07 · 7 answers · asked by surya c 1

or .. the same question for protons and neutons ..

2006-11-19 21:06:35 · 4 answers · asked by u&me 3

2006-11-19 21:04:37 · 3 answers · asked by Anonymous

If I have an object of 1000 kilogram mass ( 1 ton )
what will be the force that this object will effect on the earth if it free fall from 5 m height
thanx

2006-11-19 20:14:35 · 8 answers · asked by mhafeth_1 1

How much energy is required to boil water when the water is initially 25 C.

2006-11-19 19:59:20 · 4 answers · asked by Cash 1

Hello friends ?try to solve my confusion..

we know that weight of a body= force..
In space, we feel weight lessness so whyn't in the space the gravitational force acting on us = zero ? whosoever tell this., he/she would be awarded 10points.......

2006-11-19 19:33:47 · 16 answers · asked by Nainika S 1

2006-11-19 18:51:31 · 9 answers · asked by sim_jadoo 1

In the cabin of a jetliner that cruises at 600 km/h, a pillow drops from an overhead rack into your lap below Since the jetliner is moving so fast, why doesn't the pillow slam into the rear of the compartment when it drops? What is the horizontal speed of the pillow relative to the ground? Relative to you inside the jetliner?

2006-11-19 18:43:46 · 6 answers · asked by Help 1

something like a technology that are used world wide other than thermal imaging

2006-11-19 18:35:59 · 2 answers · asked by wacky m 1

The dead sea lies 1,300 feet below sea level.Would water at the dead sea boil faster than water boiled in an area above 6,000 feet?

2006-11-19 18:12:20 · 4 answers · asked by Anonymous

Two thin rectangular sheets (0.06 m * 0.46 m) are identical. In the first sheet the axis of rotation lies along the 0.06 m side, and in the second it lies along the 0.46 m side. The same torque is applied to each sheet. The first sheet, starting from rest, reaches its final angular velocity in 7.4 s. How long does it take for the second sheet, starting from rest, to reach the same angular velocity?

2006-11-19 17:44:06 · 1 answers · asked by Alan l 1

how do i write the equation to maintain equilibrium with forces

2006-11-19 17:30:57 · 3 answers · asked by billf39 2

2006-11-19 17:21:40 · 5 answers · asked by gullveer_r 1

If law of conservation of energy is true ..what happens to the mechanical energy of freely rotating shaft .??
if we start an egine and allowed to run.here the chemical energy of fuel is converted into heat.further this heat energy is converted into mechanical energy of rotating shaft.if this shaf is connected to a generator it will produce electric energy & if connectd to pump it will lift fluid.what happens to that energy if we leave that shaft rotate free with out using..is that entire enrgy transferred to AIR surrounding shaft...?????? heat and friction may not be the answers as they exist all the time, no matter we r utilising the energy or not.

2006-11-19 17:11:14 · 4 answers · asked by hiris(Hi..RiSK) 1

2006-11-19 17:07:22 · 5 answers · asked by Anonymous

2006-11-19 17:07:03 · 4 answers · asked by Anonymous

2006-11-19 17:04:38 · 7 answers · asked by Anonymous

A bored college student decides to try bungee jumping. He attaches an elastic bungee cord to his ankles and happily jumps off a tall bridge across a river. He ends up barely touching the water before the cord jerks him back up. What is the mass m of the student? The length of the relaxed cord is y(e); the distance from the bridge to the river surface is y(0) (where y(0) > y(e)), and the spring constant of the elastic cord is k.
Which objects are reasonable to include in the system in this problem? a,the bridge b,the student c,the bungee cord d,the air
e,the river f,the planet earth g,the moon h,the sun
Which assumptions are reasonable to make in this problem?
The student can be treated as a particle moving with constant speed. The student can be treated as a particle moving with constant acceleration. The student cannot be treated as a particle. The air resistance is substantial. The air resistance is negligible.The amount of heat generated in the bungee cord is subs

2006-11-19 17:04:18 · 2 answers · asked by ahmad g 1

2006-11-19 16:59:33 · 4 answers · asked by Anonymous

if we start an egine and allowed to run.here the chemical energy of fuel is converted into heat.further this heat energy is converted into mechanical energy of rotating shaft.if this shaf is connected to a generator it will produce electric energy & if connectd to pump it will lift fluid.what happens to that energy if we leave that shaft rotate free with out using..is that entire enrgy transferred to AIR surrounding shaft...??????

2006-11-19 16:57:28 · 5 answers · asked by hiris(Hi..RiSK) 1

Two cars of masses m1 and m2 collide at an intersection. Before the collision, car 1 was traveling eastward at a speed of v1 , and car 2 was traveling northward at a speed of v2. After the collision, the two cars stick together and travel off in the direction shown.

1,First, find the magnitude of v(vector), that is, the speed v of the two-car unit after the collision
Express v in terms of m1,m2 , and the cars' initial speeds v1 and v2.

2,Find the tangent of the angle (theta).
Express your answer in terms of the momenta of the two cars,p1 and p2


for that problem i put p1/p2 and its wrong they told me look at the figure given if p2=0 what should tan(theta) be? and im so confused now any boddy can help me pliz

2006-11-19 16:42:53 · 2 answers · asked by Anonymous

It says that as something approaches the speed of light.. time will slow down for it relative to the outside world.. right?

And that if something were to acheive the speed of light.. time will stop for it.. eh?

well.. what bout light? light travels at the speed of light.. if time should stop for light.. why does it have a finite speed? why does it take 8 mins for it to get here from the sun?

If time stops for light then shouldnt be everywhere simumtaneously?

2006-11-19 16:37:00 · 2 answers · asked by Dhruv 1

You have a boat with a motor that propels it at vboat = 4.5 m/s relative to the water. You point it directly across the river and find that when you reach the other side, you have traveled a total distance of 27 m (indicated by the dotted line in the diagram) and wound up 11 m downstream. What is the speed of the current?


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2006-11-19 16:30:00 · 2 answers · asked by xiuhcoatl 1

2006-11-19 16:22:31 · 1 answers · asked by Anonymous

A woman and her dog are out for a morning run to the river, which is 4.0 km away. The woman runs at 2.5 m/s in a straight line. The dog is unleashed and runs back and forth at 4.5 m/s between the owner and the river, until the woman reaches the river. What is the total distance run by the dog?

2006-11-19 16:11:37 · 2 answers · asked by billf39 2