Physics - October 2006

m/s^2 means? I mean like what does it mean besides acceleration? What does the squared essentially mean?

2006-10-24 14:32:48 · 8 answers · asked by Anonymous

relating to Newton's laws on forces

2006-10-24 14:32:28 · 2 answers · asked by ^_^' 2

Can anyone describe this to me in terms that a half an idiot like me could understand?

2006-10-24 14:28:04 · 6 answers · asked by Anonymous

Ok, If train A left the station at 3:30 and reached a speed only speedy things may travel.. how hard would the train have to pe punched by the juggernaut to get all of the women/shemales pregnant and concieve the baby also in just under a minute? (answer must be in fjords/# of choco tacos consumed by an irate seagull on steroids)

2006-10-24 14:25:05 · 11 answers · asked by Anonymous

2006-10-24 14:10:44 · 4 answers · asked by luv4furyfriends 2

Why is it sometimes gravity is positive 9.8 and sometimes -9.8? Like in kinematics equations, you use the negative. But in F=ma, you would use the positive.

2006-10-24 14:07:17 · 5 answers · asked by Anonymous

Has there ever been a situation where an animal was allergic to a person?

2006-10-24 13:22:19 · 2 answers · asked by WillyINCALI 2

A man lifts someone up by the neck and, with both arms fully extended and horizontal, holds the person off the ground. If the person being held weighs 710 N, is 60 cm from the shoulder joint, and the man has an anatomy analogous to that in the figure below , what force must each of the deltoid muscles exert to perform this task? (Take the weight of the arm of the man to be

http://i116.photobucket.com/albums/o23/dead10252006/10.gif

2006-10-24 12:58:35 · 1 answers · asked by Anonymous

A boom of mass m supports a steel girder of weight W hanging from its end (see figure below). One end of the boom is hinged at the floor; a cable attached to the other end of the boom and pulls horizontally on it. The boom makes an angle (theta) with the horizontal.
For (theta) = 0, does T approach zero or infinity?
For (theta) = 90, does T approach one or zero?

http://i116.photobucket.com/albums/o23/dead10252006/6.gif

2006-10-24 12:56:10 · 1 answers · asked by Anonymous

A rod being used as a lever is shown in the figure below . The fulcrum is 1.2 m from the load and 2.4 m from the applied force. If the load has a mass of 20.0 kg, what force must be applied to lift the load?

http://i116.photobucket.com/albums/o23/dead10252006/4.gif

2006-10-24 12:53:36 · 1 answers · asked by Anonymous

It is claimed that buttered toast always lands butter side down and a cat always lands on its feet when droped.

2006-10-24 12:47:01 · 11 answers · asked by G 6

2006-10-24 12:35:40 · 2 answers · asked by Starsky 2

Two blocks, of weight 3.6 N and 7.2 N are conected by a massless string and slide down a 30 degree incline plane. The coefficient of kinetic friction between the lighter block and the plane is .10; that between the heavier block and the plane is .20. Assuming that the lighter block leads, find the tension in the string and the acceleration of the blocks.

2006-10-24 12:11:28 · 3 answers · asked by thewordofrashi 2

World class swimmers can swim the 100 meter freestyle in about 55 seconds. What is their approximate average speed?

A. 1.91 m/s
B. 1.82 m/s
C. 0.55 m/s
D. 1.67 m/s

2006-10-24 12:07:14 · 13 answers · asked by bombshellimage 1

Do machines help you work by decreasing the amount of work that must be done , changing the size or direction of a force , decreasing friction or conserving energy?

2006-10-24 12:01:58 · 5 answers · asked by Linda_Cubanita 2

From a physics perspective, energy would be integral of force * distance moved in direction of the force, so no motion should mean no energy used? So is it a biochemical effect of the way our muscles work?

2006-10-24 12:00:23 · 5 answers · asked by Adrian W 1

An Eskimo pushes a 50.0 kg sled over level ground with a force of 175 N exerted horizontally, moving a distance of 6.0 m. If the net work done on the sled is 150 J find the coefficient of kinetic friction.

2006-10-24 11:49:08 · 2 answers · asked by terpjenrose 1

A. you take a picture very quickly
B. you do not need film
C. objects both close and far away are in focus
D. It can act as a macro lens for looking at very nearby objects
E. It operates well in low light situations

2006-10-24 11:47:44 · 2 answers · asked by Anonymous

2006-10-24 11:36:11 · 1 answers · asked by iceman 1

A child of mass 38.5 kg is sitting on a horizontal seesaw at a distance of 1.8 m from the supporting axis. What is the magnitude of the torque about the axis due to the weight of the child?


the answer would be nice, but the formulas that id use are what im really looking for.

2006-10-24 11:31:09 · 2 answers · asked by Anonymous

2006-10-24 11:16:20 · 2 answers · asked by Anonymous

A train is headed down a track at 25 meters/second. Ahead of the train, at a distance of 10 kilometers, is a rail cart moving down the same track in the same direction at 4 meters/second.

How many seconds will it take for the train to overtake the rail cart?

What equation do I have to use?

2006-10-24 11:06:35 · 5 answers · asked by kagurarox 2

You are debating with a person and they say that on the design of a roller coaster, each summit must be lower than the previous.
You say that that deosn't matter as long as the first summit is the tallest. Who is correct and why?

2006-10-24 10:58:33 · 9 answers · asked by Dancing Star 1

I'm writing my college apps right now and this is how it starts... Studying is easy, if you like the subject. But when you don’t like the subject, it could be like studying __(inter clever saying here) _______.

I'd like it if it's really geeky and has to do w/ science, preferablly physics. Make it as outrageous as possible!

2006-10-24 10:51:33 · 7 answers · asked by Anonymous

im not very good at science and my physics teacher is evil.
R stands for resistance in ohms.

2006-10-24 09:51:21 · 3 answers · asked by Anonymous

high qualitie with good pice

2006-10-24 09:49:29 · 1 answers · asked by Mehran Z 1

Anything capturable in a single image--a jumping spark, anything, ideas!

2006-10-24 09:38:15 · 14 answers · asked by Anonymous

2006-10-24 09:31:32 · 15 answers · asked by WillyINCALI 2

Ok, I have a physics question. Now, I know this is easy but it's just not coming to me. You don't have to give me the calculations or anything like that but can you just help me and tell me what to do in order to find it please?

F is for force (I'm sure everyone knows that)
Given F1 = 36 Newtons (25 degrees North of East) and F2 = 42 Newtons ( 15 degrees east of south), determine the force F3 that must be added to the sum of F1 + F2 to produce a net force of zero.

Please I know it's easy but can you tell me how to find it.

Also, I have another question:
The force of gravuty on a textbook is 18 newtons (down):
a) What's the net force on the book if it is held stationary in your hand?
b) Neglecting air resistance, what's the net force acting on the book if you suddenly remove your hand?

Now, I'm aware that for part a) , the net force is 0 because thaere's no force acting on it besides gravity and they cancel out anyways but what about for part b) , can someone help me?

2006-10-24 09:29:11 · 6 answers · asked by A 2

2006-10-24 09:26:38 · 26 answers · asked by nimit_engineer 1