A table is an item of furniture with a flat top and one or more legs, used as a surface for working at, eating from or on which to place things. Some common types of table are the dining room table, which is used for seated persons to eat meals; the coffee table, which is a low table used in living rooms to display items or serve refreshments; and the bedside table, which is used to place an alarm clock and a lamp. There are also a range of specialized types of tables, such as drafting tables, used for doing architectural drawings, and sewing tables.
Common design elements include:
top surfaces of various shapes, including rectangular, square, rounded, semi-circular or oval
legs arranged in two or more similar pairs. It usually has four legs. However, some tables have three legs, use a single heavy pedestal, or are attached to a wall.
several geometries of folding table that can be collapsed into a smaller volume (e.g., a TV tray, which is a portable, folding table on a stand)
heights ranging up and down from the most common 18–30 inches (46–76 cm) range, often reflecting the height of chairs or bar stools used as seating for people making use of a table, as for eating or performing various manipulations of objects resting on a table
a huge range of sizes, from small bedside tables to large dining room tables and huge conference room tables
presence or absence of drawers, shelves or other areas for storing items
expansion of the table surface by insertion of leaves or locking hinged drop leaf sections into a horizontal position (this is particularly common for dining tables)
Homework Statement
A 0.090 kg remote control 24.2 cm long rests on a table, as shown in the figure below, with a length L overhanging its edge. To operate the power button on this remote requires a force of 0.460 N. How far can the remote control extend beyond the edge of the table and still...
Homework Statement
A 3.5 kg block (block A) sits on a 6.2 kg block (block B). The larger block is sitting on a horizontal frictionless table. The coefficients of friction between the blocks are static = 0.35 and kinetic = 0.22. a) Calculate the maximum horizontal force that can be...
Hi guys i guess this is right place to ask this question b/c research section but if i did wrong sorry .any way i need help on this ...
I am a senior in school.there is something i need help on my senior project .My project is about table tennis and one of my objective is to research the...
Homework Statement
The coefficient of kinetic friction between the 2.0 kg block in figure and the table is 0.350.
What is the acceleration of the 2.0 kg block?
Homework Equations
F=uK*Force Normal
Fnet=ma
The Attempt at a Solution
I tried to take the mass's of both the hanging and...
Homework Statement
1.Show using a force triangle that the vector addition of the 3 forces is zero.
2. Calculate the X and Y component of forces and show that for each set of data:
ΣFx=0
ΣFy=0
Trial A: Mass(g) Direction (°)
F1 (Pulley#1): 50g 200°
F2 (Pulley#2): 95g 0°
F3 (Pulley#3): 50g...
this question confuses me and my teacher hasnt been in school for the last 3 days and I am positive we have not learned anything like this. please help
let B(t) be the population of Belgium at time t. the table below gives the midyear values at B(t), in thousands, from 1980 to 2000. Fill in...
Homework Statement
A small block with mass m rests on a frictionless horizontal tabletop a distance r from a hole in the center of the table. A string tied to the small block passes down through the hole, and a larger block with mass M is suspended from the free end of the string. The small...
hi guys,
i am having a problem with comsol.
i want to simulate what force is needed to tilt for example a table on the floor.
althought there is a problem in my drawing i think, because if i enter the solve mode you can see the floor actually pulls the table back on the floor when it actually...
A ball is projected horizontally from the edge
of a table that is 0.823 m high, and it strikes
the floor at a point 1.44 m from the base of
the table.
The acceleration of gravity is 9.8 m/s2 .
What is the initial speed of the ball? An-
swer in units of m/s.
the table is .823 m high...
Hope this is the right place for this thread.
Homework Statement
Hi I need help with the truth table for a CMOS circuit.
http://www.isk.kth.se/~william/dd/agda/bild/cmos/mos903.gif
Homework Equations
Truth table and
What type of circuit is this? But I guess that's easy to...
Hey guys I am having a hard time trying to solve this problem and I was hoping someone could help me out with it because to be honest I don't even have any idea how to start it.
Problem:
Two identical blocks are tied together with a string and placed along the same radius of a turntable...
Homework Statement
A rope of mass M and length L lies on a frictionless table, with a short portion L0 hanging through a hole. Initially the rope is at rest. Evaluate A and B so that the initial conditions are satisfied.
The Attempt at a Solution
Ok, so I understand the problem and...
Hi guys,
I need some help from you.
I was writing my thesis and I am having a problem in making a table.
I wrote the following,
\begin{table}[ht]
\caption{Moody's and S\&P rating system with numerals}
\centering
\begin{tabular}{l l}
\hline\hline
Moody's Rating &...
Most of the time i play table tennis and I always think about physics of table tennis .
My question is .
Is there any a very brief introduction to the mathematics and physics on table tennis?
How will you get a table cloth of 12x12 units for a square table from a rectangular cloth of size 16x9 units in a single cut and placing two pieces together ?
Question: A total of 2n people, consisting of n married couples, are randomly seated (all possible orderings being equally likely) at a round table. Let C_i denote the event that couple i are seated next to each other, i = 1, 2, ... n.
(a) Find P(C_i).
There are two different ways to seat...
In a table in two different books they both say:
\int \frac{1}{a^2-u^2}du=\frac{1}{2a} ln\left|\frac{u+a}{u-a}\right|+c
but I am not having the same result:
\int \frac{1}{a^2-u^2}du=\frac{1}{2a} \left(\int \frac{1}{a-u}du + \int \frac{1}{a+u}du\right) = \frac{1}{2a} \left(-ln\left| a-u...
:frown:
Hello, guys. I need help. My professor ask us to search for the 20 scientists who prepared the Periodic Table. Well, so far, I only found 10 scientists.
1.Aristotle
2.Antoine Lavoisier
3.Jöns Jakob Berzelius
4.Johann Döbereiner
5.John Newlands
6.Lothar Meyer
7.Dmitri...
From the University of Nottingham, a video series on the 118 elements.
http://news.bbc.co.uk/1/hi/sci/tech/7507986.stm
Their website:
http://www.periodicvideos.com/
And their YouTube channel:
http://youtube.com/user/periodicvideos
Here is the setup to my question:
You have a long table supported by two legs (think of the table as two-dimensional. in the real 3D table each "leg" could be a pair of legs, one behind the other). The tabletop is massless, but has some massive books sitting on it at various places.
You want...
Homework Statement
Mass A, 15 kg, is on a table, connected by a massless rope and frictionless pulley, to mass B, 8 kg, which is hanging off the side of the table. The kinetic friction coefficient is 0.14. Find the acceleration of the blocks.
The Attempt at a Solution...
Hi everyone, I am new here, and I am thirteen, but I am really into this and I have recently grasped (only on a basic level) quantum theory. I understand relativity and I am looking into many fields, such as cosmology.
So, me and my dad were talking the other day, and he proposed the...
Homework Statement
a box weighing 77N rest on a table. a rope tied to the box runs vertically upward over a pulley and a weight is hung from the other end. determine the force that the table everts on the box if the weight hanging on the other side of the pulley weighs 30N.
(box in on the...
[SOLVED] acceleration of mass on table
Homework Statement
http://www.badongo.com/pic/3633497
The Attempt at a Solution
The resultant force of the two hanging mases is 19.6 N. This means that just after the masses are released, the friction is 0.3*mg = 4.41 N, so that the total...
I recently did some personal research into the aforementioned functions.
I created a few simple functions based in part on sine (and cosine).
Anyway, the basic idea was to get a seed from the sine of some number, since -1 =< sin N =< 1.
However, I think that sine is not an ideal function to...
I'm not quite sure where to post this but it certainly isn't homework/coursework so I suppose here is appropriate.
The situation is that a friend claims something which I believe to be physically impossible happened, and though it is a minute and pointless point to argue about, I want to...
Homework Statement
Element X forms a chloride, XCln which melts at 3\circC. When 0.500 g of the chloride reacts with an excess of acidified silver nitrate, 1.19g of AgCl are formed.
Another 0.500g sample of the chloride is heated strongly and chlorine gas is given off. When the residue is...
Hi all
Basically, I'm looking for a fingerprinting or perfect hash function.
The key is 40 alpha characters, specifically \b[A-Z_]{40}\b.
The index is a 12-digit integer.
The function must be deterministic, i.e. if a key maps to an index, it must always map to the same index.
The...
I don't really know if this is an acceptable topic to be placing in a "Sciences" homework help forum. It's a problem I'm having in my Symbolic Logic class.
Homework Statement
Every sentence has a truth-table which can describe it, does every truth table have a sentence?
We're dealing...
An object weighing 34.518379357 kg, free-falling at 4.2(?) m/s, travels 0.889m, before it begins decelerating when it makes contact directly on the top of a person's head.
Within what I would guess would be perhaps maybe 2(?) milliseconds after deceleration commences, the first intervertebral...
[SOLVED] Two blocks - one on a table and one hanging - acceleration with friction
Homework Statement
h ttp://bildr.no/view/186531
that's a link to an image of the problem
Block A (mass 2.25kg) rests on a table top, it is connected by a horizontal cord passing over a light , frictionless...
If an atom with more protons have tighter electron orbitals than atoms with fewer protons, why doesn't the "atomic radius" decrease up the periodic table? Instead it increases, why is this?
I don't know if I can get help here, but it's worth trying, I have to design a state table for a sequential circuit, the table looks like this
P St Input N St Output
A B X Y A B Z
0 0 0 0
0 0 0 1
0 0...
Hi all,
I am confused of how to find the “TOTAL TOOTH-TO-TOOTH SPACING AND PROFILE ERRORS e”.
My Professor want me to determine the ERRORS of a Spur Gear with gear diameter d1 = 420 mm and pinion diameter d2 = 65 mm and a gear module m = 8 and the AGMA Quality is No. 10.
When I see the...
An infinitesimally thin rope is held on a frictionless table with one-fourth of its length hanging over the edge. If the rope has length L and total mass m (assuming uniform mass distribution), how much work is required to pull the hanging part back onto the table.
U = mgh
The length of...
Homework Statement
\int xe^{2x^2} cos(3x^2) dx
This is the hardest integral I've attempted so far. I've come up with an answer that fits a table in my book but I'm not sure if I arrived there correctly. Thanks for reading!
Homework Equations
\int e^{au} cos\ bu\ du\ =...
Hi,
I got one table of four columns.
e.g.
Temperature, Field, Vhall and Vdrive.
Table contains the 1000 rows.
I am given the Vhall_maesured and Vdrive_measured values.
I want to find out, which row in the table has the closest values
for Vhall and Vdrive to corresponding...
Hi,
I am trying to calculate how fast you could rotate a pool table (at constant angular velocity) without the balls moving.
Assumptions used: coeffecient of static friction=0.3
table dimensions: 50in.X100in.
So the farthest distance from the center is 111.8 in.
I came up with about...
A 0.015-kg bullet traveling horizontally at 399.9 m/s strikes a 4.1-kg block of wood sitting at the edge of a table. The bullet is lodged into the wood. If the table height is 1.2 m, how far from the table does the block hit the floor?
________________________m
Homework Statement
The vertices of a tilted triangle table are (0,0,9), (5,3,7), (4,7,6) and I need to determine where the a ball of mass m falls off of the table. There is no friction or outside forces. The ball is released from point (0,0,9).
2. The attempt at a solution
I'm not sure...
Just curious, what do physicists usually take on top of the regular course work?
Myself, being enrolled in chemical physics have the following time table this year:
Organic Chemistry I & II
Advanced Calculus w/ Vector Analysis
Waves and Oscillations, then Electrodynamics
Physical...
Homework Statement
A popular pastime is to see who can push an object closest to the edge of a table without its going off. You push the 100 g object and release it 2.20 m from the table edge. Unfortunately, you push a little too hard. The object slides across, sails off the edge, falls...
NOTE: This is not homework, but if you feel it is in the wrong forum then move it. I didn't know a better forum that it could go in.
I want to construct a table of results (minus the results for now) that is related to how the count rate on a geiger muller counter varies with distance with a...
[SOLVED] Block on a table
Homework Statement
http://img91.imageshack.us/img91/4285/fudgepq5.th.png
I am having some trouble finding the acceleration of the blocks, can anyone help me?
The weight of B is 6 lbs.
The weight of A is 5 lbs.
The friction coef is .3
Homework Equations
The...
in the periodic table we have the density of each element ( density(Si) = 2.33), density(O)=1.429). i wonder how we could calculate the density of SiO2 ?
Homework Statement
A spool with radius r and mass M sits upright on a table, a distance l from the edge. The string hangs off the edge of the table with a mass m attached. The table is frictionless: what will the velocity of the weight be when the spools center of mass reaches the edge of...
Homework Statement What information can i find on the periodic table of the elements and what does it mean
Homework Equations What is anything.
The Attempt at a Solution Atomic symbol, the big letter, for the element abervation. The elements name, for the elements name. Atomic...
1. When someone loops, and the person blocks, the ball goes out...if the ball really rides up the rubber, shouldn't it have backspin when it comes back? Since friction accelerates the spin. For instance, when I sidespin, the ball I get back is the continual motion of the ball, instead of its...
[SOLVED] Aeordynamics, drag, wind resistance - table with Cw values for objects
Hello
I am not using the standard template as this is a minor question in relation to my assignment, and not the actual questions from the assignment itself.
I am calculating the curve of a projectile fired at...