Physics - November 2006

Considering that de Broglie's wavelength is based on Planck's constant and momentum, is there a theoretical wavelength for objects with greater mass than that of atomic particles if they moved at extremely slow speeds? Also, would no speed imply an infinitely large wavelength?

This isn't a question anywhere; I was just wondering while looking at the equation. I'm curious what other people have to say on this idea.

2006-11-05 14:43:14 · 2 answers · asked by Anonymous

Object a has a larger mass than object b which is at rest what will happen to object b and will object a slow down?

2006-11-05 14:03:55 · 5 answers · asked by Anonymous

from its end. The boom has a length L= 24m and is at an angle of 48deg above the horizontal. A support cable is attached(at a 90deg angle) to the boom at a distance of 0.66 L from the foot of the boom and its tension is perpendicular to the boom.
a)find the tension T in the support cable in units N.
b)find the horizontal component of the reaction force on the boom by the floor in units N.
c)find the vertical components of the reaction force on the boom by the floor in units N.

2006-11-05 13:50:27 · 2 answers · asked by Anonymous

2006-11-05 13:44:10 · 4 answers · asked by The Lioness 2

Do you agree with Einstein's thoery of everything is predictable, or with the theory of probability, saying no particle could be measured as being in one exact location in space?

2006-11-05 13:38:58 · 8 answers · asked by Matt T 2

It also moves along y= 7m. Find the magnitude of its angular momentum relative to the point (Xo, Yo), where Xo= 2m and Yo= 12m, answer in kg m^2/s.

2006-11-05 13:19:03 · 1 answers · asked by Anonymous

The planet's mass is Mp= 3.35x10^23 kg and its radius is Rp= 4.89x10^6 m (it may be approximated as a soild ball of uniform density). It rotates on its axis once every T= 31 hr. The asteroid has a mass of Ma= 2.03x10^17 kg and a speed of Va= 14900 m/s (which is relative to the planet's center). Its velocity vector point theta= 19(degrees) below the Eastward horizontal. The impact happens at an equatorial location.
a) calculate the planet's angular momentum (relative to its spin axis) before the impact in kg m^2/s.
b)calculate the asteroid's angular momentum relative to the planetary axis in kg m^2/s.
c)The impact is totally inelastic...the asteroid is stuck in the planet's crust. The asteroid's angular momentum makes the planet rotates faster after the impact. By how many seconds has the collision shortened the planetary day in s?
For simplicity, ignore the effect of the asteroid's mass on the planet's moment of inertia and assume: I(after)=I(b4).

2006-11-05 13:11:12 · 2 answers · asked by Anonymous

any other quantity in nature that has such property?

energy

entropy

temperature

mass

heat

which one is it??

2006-11-05 13:10:51 · 2 answers · asked by chapped lips 5

I looked through similar questions, but i still don't get it... : (...can someone explain it in easy terms for me? I know it has to do with the Bernoulli's principle.

2006-11-05 12:59:03 · 2 answers · asked by Rafael 2

2006-11-05 12:55:13 · 8 answers · asked by chapped lips 5

Object A slams into object B (at rest) what will object b's speed be after and will there be any difference in object a's speed after the collision?

2006-11-05 12:51:10 · 6 answers · asked by Anonymous

2006-11-05 12:39:04 · 2 answers · asked by The Dude 1

A small wooden cube is placed on a top of a hemisphere of radius r. What maximum horizontal velocity is to be given to the cube to detach it from the start of its motion?
(A)v^2>rg (B)v^2

2006-11-05 12:37:20 · 1 answers · asked by Anonymous

A train has a mass of 4.56E+6 kg and is moving at 82.7 km/hr. The engineer applies the brakes, which results in a net backward force of 1.63E+6 N on the train. The brakes are held on for 28.7 s. The Speed of the Train is: 1.27×101 m/s

How far does it travel during this period?

2006-11-05 12:36:44 · 2 answers · asked by warning9 2

I'm studying for a general physics quiz and am having a hard time figuring out how to derive the equations to use for this problem. Don't need it solved, just need some guidance on where to start. Thanks in advance.

A skier slides horizontally along the snow for a distance of 29 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is µk = 0.030. Initially, how fast was the skier going?

2006-11-05 12:15:38 · 1 answers · asked by larkinfan11 3

If you have a pipe with constant cross-sectional area and water is flowing from point a to point b, in which point b is elevated with relation to point a, at which point is there more pressure? a or b? and why?

2006-11-05 11:50:10 · 4 answers · asked by NSmith 1

An A-Shapped Ladder, both sides of the ladder are equal in length. The ladder is standing on a frictionless horixontal surgace, and only the crossbar )which has a negligible mass) of the "A" keeps the ladder from collapsing. The ladder is uniform and has a mass of 20.0 kg. The angle the ladder makes is 30.0 degrees. The length of the ladder if 4.00 m.

2006-11-05 11:48:09 · 2 answers · asked by poetunknown2000 1

do you have any ideas?

2006-11-05 11:33:52 · 23 answers · asked by Myself. 2

2006-11-05 11:23:12 · 2 answers · asked by Anonymous

A force of 40.0 N accelerates a 5.0-kg block at 6.0m/s^2 along a horizontal surface.

a. how large is the frictional force?
b. what is the coefficient of friction?

Please help me with these questions.
I'm having trouble understanding them.

2006-11-05 11:19:20 · 5 answers · asked by vicky p 1

65kW is to arrive at a town over two 0.100ohm lines. How much power is saved in the voltage is stepped up from 120V to 1200V and then down again, rather than simply transmitting at 120V. (It is assumed that the transformers are 100% efficient).

Thanks in advance!

2006-11-05 11:12:02 · 2 answers · asked by BugGurl 3

1. If the price charged for a candy bar is p(x) cents, then x thousand candy bars will be sold in a certain city, where p(x) = 9-(x/22). How many candy bars must be sold to mazimize revenue? (I got the answer 198 thousan candy bars, please correct if wrong)

2.A small frictionless cart attached to the wall by a spring is pulled 10 cm back from its rest position and released at time t=0 to roll back and forth for 4 seconds. Its position at time t is s=1-10(cos)pi *t. What is the cart's max speed? WHen is the cart moving that fast? What is the magnitude of the acceleration then? (I got the answer 10pi=31.42cm/sec; t= .5 s, 1.5 s, 25s, 3.5s ; accel=0cm/sec^2, again please correct if wrong)

3.From a thin piece of cardboard 40 in x 40 in, square corners are cut out so the sides can be folded up to make a box. What demensions yield a box of max. volume. What is max. volume? (I got 26.7 x 26.7 x 6.7; 4746.7 in^3)

I would greatly appreciate if you could check and/or correct.
THANKS

2006-11-05 11:04:54 · 1 answers · asked by Anonymous

2006-11-05 10:51:38 · 2 answers · asked by frutigurl 2

How do I gain confidence in my physics abilities? These problems are making me very, very angry.

2006-11-05 10:51:05 · 1 answers · asked by anonymous2372000 1

A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.1 105 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 4.5 107 J at lift-off. What is the work done on the jet by the catapult?

2006-11-05 10:43:44 · 2 answers · asked by karito22706 1

2006-11-05 10:38:02 · 4 answers · asked by burundukgan 1

A glider of mass 0.152 kg is moving to the right on a frictionless, horizontal air track with a speed of 0.820 m/s. It has a head-on collision with a glider 0.298 kg that is moving to the left with a speed of 2.25 m/s. Suppose the collision is elastic.

Find the magnitude of the final velocity of the 0.152 kg glider.

Find the magnitude of the final velocity of the 0.298 kg glider.

2006-11-05 10:23:23 · 1 answers · asked by darkangelwattitude 1

I guess I'm an average speed walker.

2006-11-05 10:18:25 · 2 answers · asked by Moon O 1

I'm doing my physics homework and have run across a problem with the direction north of east in it and I would like to know if it's northeast or just north.

2006-11-05 10:15:35 · 13 answers · asked by bri08310 1

On a frictionless horizontal air table, puck A (with mass 0.371 kg) is moving toward puck B (with mass 0.251 kg), which is initially at rest. After the collision, puck A has velocity 0.121 m/s to the left, and puck B has velocity 0.652 m/s to the right.

What was the speed v_Ai of puck A before the collision?

Calculate DeltaK, the change in the total kinetic energy of the system that occurs during the collision.

2006-11-05 10:09:20 · 1 answers · asked by darkangelwattitude 1