hand Definition and 466 Threads

I need to know WHY you can't tell if you have a high fever with your own hand... I am thinking that it is because your body temp. is all equal?

How many times per day (00:00-24:00) do the hour and minute hand form a straight line together? Would this be the same for when they overlap? Say, the minute hand goes pi/1 hr and the hour hand goes (pi/12)/1 hr. Then what?

I'm wondering how people used to solve log's. I can't figure out any sort of pattern when I look at certain logs (to figure out a way to solve them by hand) so any information regarding this would be nice. I don't mean like log10(100)=2, that's obvious I mean like log10(20)~1.301, how does...

wat is the right hand rule and how do u use it.is there one for motors to.

Homework Statement Let alpha(t) be a regular curve. Suppose there is a point a in R^3 space s.t. alpha(t)-a is orthogonal to T(t) for all t. Prove that alpha(t) lies on a sphere.Homework Equations Definations: A regular curve in R^3 is a function alpha: (a,b)-->R^3 which is of class C^k for...

If a wheel is turning at 3.0 rads/s, the time it takes to complete one revolution is about: 3.0 rads/s X 1 revolution/6.28 rads = .477 revolutions/s now do I just times by 60s to cancel the seconds out to get 1 revolution. The rotational speed of the minute hand of a watch is: w=...

Hey everyone. Just a quick high school physics question about determining magnetic fields using Hand rules. The only thing I have trouble trying to understand is how to determine the way a compass arrow will point if you place it on top, or under an electric circuit. I know that they are...

Hello everyone, Another example from the book I'm going over and I'm not exactly sure how they got their answer: The game of poker is played with an ordinary deck of cards. Various five-card holdings are given special names. a. how many 5 card poker hands contain two pair? Well I'm...

I have two homework problems that have been driving me nuts: 1.) evaluate the indefinite integral: integral(dx(e^ax)cos^2(2bx)) where a and b are real positive constants. I just don't know where to start on it. 2.) Find all values of i^(2/3) So far I have...

Does anyone know of a good site that explains this rule? I just don't get it at all. Better yet, is there some way you can know the direction of the magnetic field without doing it

hmmm i have no idea where to even start with this problem, i cannot find any examples that are similar or anything like that anywhere! http://img147.imageshack.us/img147/2319/picture18ur9.png anyone got an idea as to a good first step to take? thanks sarah :) edit: i tryed something wild...

I'm working with Coulomb's law, and finding the force from known charges is easy. But I don't know how to find mass from Coulomb's law, and I guess I don't know an equation that will help. Two equally charged particles, held 3.8 x 10-3 m apart, are released from rest. The initial...

have a copy of Cujo on hand? Quick, I need Stephen King's Monster Words. Monsters, stay out of this room tonight You have no business here! Anyone?

Hello. What is hand stroboscope ?How is it works ? how can we see anything freez by using the stroboscope ? Please explain. thankyou

My notes from lecture are somewhat deceiving. I have this table that is supposed to make plotting the phase portion of a Bode plot simple. I understand the magnitude portion, however I do not get what is being said for the phase portion. I am spending too much time on something that is supposed...

I forgot i had been touching chili, and now every thing feels like it has been dipped in acid, i have had a shower and washed every thing in milk, but it still hurts like the devil, any cures PLEASE.

Bah! damn this stuff! Anyone know how to get silver nitrate off your hands? I was thinking of finding a photography store and see if they have any chemicals since i know its something photo...people...whatever... use :). Any suggestions? help? cut off flipper?

Here's a pulley problem that has got me stopped; I'd appreciate any help that's offered. There are two blocks, A (44 N) and B (22 N) connected via a rope that stretches over a pulley. Block A is resting on a table, and block B is hanging over the edge. Block C is positioned on top of Block A...

what is the left-hand material or the right-hand material? Is there some liquid that belongs to the left-hand or the right-hand? thank u...

How does one find the roots of an equation, for instance: r^4 + r^3 - 7r^2 - r + 6 = 0 ...completely by hand. Is there some type of non-lengthy process or trick to find special circumstances for easy solving? Thanks.

I saw this video and thought I would share it, hopefully it is something new to you all. It shows touch screens that can have more than one interaction at time, I have never seen that before, so excuse me if I am behind the times...

Simple question, simple answers. We've had a lot of, what I consider, pontificating about the US becoming a "police state" lately (ehh, who am I kidding - people have been saying it for decades). I'd like to avoid the argument of what constitues a "police state" and are we actually moving in...

Recently, I noticed Gale was online and, since the place has been a ghost town all evening, I PM'd her with the following request: She responded by starting a thread with an incredible tale on the lines of the old Police song: Don't Stand So Close To Me, in which she related the story of...

These are hand delivered all the way from Knightcote :biggrin:

Does anyone know where I can find information on the Left/Right Hand rule for Motor Principle, for Motor Principle not Electromagnetism because I know that one already. Appreciate any help given. Just need a link or even the concept of it.

I was wondering if someone could give me a link to a site that will discuss the left hand and right hand rule for a straight conductor and a helix.

Hey, We recently started learning about magnetic fields and forces in physics and we took these weird right hand rules... After much attempt I cannot, for the life of me, figure them out. Is there any way I can find the direction of the field or a force without using my right hand? Like on...

Sorry to post so many questions. But i need help. 1. A five card poker hand is dealt and the last card is turned face up. Determine the probability that you have been dealt four aces, given that the card turned over is an ace. I think its a conditional probability problem but here's what...

I have learned just about the right hand rule in vector cross product. How is this proved? Can anybody give an example where the cross product plays an important role and where the vector cross product formula is obeyed? Our professor just told us that the torque due to a force acting on a body...

Hiya all, I'm stuck on a physics question set for homework. It asks "draw vector diagrams to scale to show the vertical and horizontal components of the velocity of the tip of the hand at quater-past, twenty past, twenty-five past and half past the hour." The hand is 20cm long so using the...

How does a hand stroboscope work?

I hope anyone could give me a hand on this one... The induced emf in a 5-henry inductor varies as V=(6t+26)/(t^2+10t+21). Recalling that current i=1/L∫Vdt, find the formula for the current i as a function of time t. This is what I've gotten so far...

hi i have a few general questions on the right hand rule, 1. if a charged particle enters a magnetic field going from bottom left to top right at an angle of 45 degrees, and the direction of the current is vertically up how do we determine the force using the right hand rule? 2. a wire which...

Long story short: I had some. I had to donate them. I don't want to buy them again if I don't need them. I only need a few lines right now. It's perfectly kosher, IMHO. So... If anyone has a version other than the First Folio or Second Quarto, I'll grant you one wish if you tell me what it...

Every year when I was a young child my aunt would take my siblings and I to Chuckee Cheese. Earlier today I was reminiscing about the great times when I remembered that everyone would receive a small and invisible stamp upon entering the restaurant. Since they did not charge an admission fee...

I m finding Difficulty in applyng flemings left hand rule to DC otor and AC Motor.Dats y i never like Applied Physics.

I am quite confused about the motor rule. I have a few questions concerning the topic: 1. How can I determine the direction of magnetic field acting on a current-carrying conductor? 2. How can I use the left-hand rule practically? Suppose that the current is in the north direction, and...

If a metal ring is places near a solenoid, what is the direction of the induced current in the ring for the following cases a. At the instant the swithc in the circuit containing the solenoid is thrown closed. b. After the switch has been closed for several seconds. c. At the instant...

What is the five hand rule? I need to know what direction the wire is going to move [N] I <-------- [S]

i got some strong magnets from work which i think are neodymium magnets. well i was messign with them and i held them in my hand and put my hand near my alarm clock/radio and then my hand began to tingle or feel weird when it got close to it. can someone give me an explanation for this :biggrin:

I was watching a show called Daily Planet a while back when some author of a Science book said something like, "There is a probability that my hand will go right through this table." I started thinking about what he said, and I rememberd hearing one of my Science teachers 2 years ago saying...

Hello. I have a question about RHR #2 (Force in a conductor). If IL X B = F and If the fingers represent the direction of the current, the thumb represents the direction of the force and the palm is the direction of the magnetic field, how come the magnetic field can be at an angle...

Hello Everyone, I am having trouble with the left and right hand rules in Physics. If anyone could explain them to me with as much detail as possible I would really appreciate it. I can tell you what I know and some of what I would like to know if it helps: The left hand is used for...

this is possibly the only interesting hand shaking question i know of: 5 couples go to a party. at the party everyone shakes hands with every one they don't know. (note: its not a blind date thing, i mean everyone knows their spouse) at the end, Bill, the known loser, asks everyone how...

The electrons in the beam of a television tube have a kinetic energy of 2.40×10–15 J. Initially, the electrons move horizontally from west to east. The vertical component of the earth’s magnetic field points down, toward the surface of the earth, and has a magnitude of 2.00×10–5 T. Just when...

Indicate the direction of the electric field between the plates of the parallel plate capacitor shown in the drawing if the magnetic field is decreasing in time. Give your reasoning if the magnetic field is decreasing, so is the flux, so mr. lenz says the induced magnetic field must be out of...

if i put my hand on the scanner and scan my hand, do u think the strong light will harm my hand? because i really want to scan my hand, but i don't know whether it is harmful.

I think this is a simple question but I'm not sure if I'm doing it right, this is what I have so far... A watch has a second hand 2.0 cm long. a) Compute the speed of the tip of the second hand. C = 2pi(r) r = 2.0cm = 0.02m - leave as cm or convert to m? V =...

Climate change has become a reality and is mainly due to the anthropogenic changes. When we talk about climate change its what actually happened during last 150 years to the Earth climate after human industrial revolution. Although the major contibution to these human induced changes goes to...

Hi agian... I have one of those hand shaking problems..it says: There are 14 couples. There is some shaking of hands. No one shakes hand of their date. No one shakes hands more than once with anyone person. A boy asks each person how many times they shook hands. Each person gave him a...