Table Definition and 927 Threads

Homework Statement weight of the box 10 kg on table at rest. Homework Equations deternmine weight of box and normal reaction acting on it. also determine w and Fn if force 40N pushes down the box. The Attempt at a Solution s i did like w=mg =NORMAL REACTION(R) and 40=10 * acceleration due to...

Homework Statement The weight of rod AB is 4[N] and that of piece D is 10[N]. the moment at joint C is 1.8[Nxm]. what is the weight of rod AC. Homework Equations Moments: ##M=F\cdot L## The Attempt at a Solution Rod AB doesn't contribute to the moment at C: $$10\cdot 15+180=W_AC\cdot...

Homework Statement Homework Equations W = F d F = ma The Attempt at a Solution so in order to get the whole chain on the table, we need to pull the chain 0.65 meters onto the table. since 0.65 meters is hanging off the table, the gravity is acting on it, therefore F=ma where m is half the...

Hi, I'm new here. I'm actually studying the periodic table and while collectting the data on excel i noticed something. I wouldn't see it with the usual display of a periodic table but when you put it all in a sheet, ligns after ligns it become obvious to me. Argon Ar (noble gaz) is followed...

Table saw kick-back is separated into two categories: 1) straight line kickback: when the material is pushed against the blade without perpendicular resistance applied to the material between the blade and the fence. --materiel shoots like an arrow straight back. 2) back tooth kickback: when...

Hi everyone! I am researching on Metals Work functions, and I need a table of distances between molecules! I searched on the web almost a week, but I didn't found at least A table. Please help me! If it is in a book, tell me the name of the book, or tell me where can I find it. Any help would...

Homework Statement This Problem involves solving a simple Diff. Eq. A block of mass m slides on a frictionless table. It is constrained to move inside a ring of radius L that is fixed to the table. At t=0 the block is moving along the inside of the ring (In the tangential direction) with...

There are many different mass numbers for a given element known as isotopes. Are elements on the periodic table isotopes of their element? Why not use the average of all the mass numbers for an element?

where can I find an example of a SIMPLE snippet of code used to create a pivot table?

See title. I have a table that I've named B. And I want to create table that is essentially the change in values of B. If I was writing this on paper I would say: Let ##b_i \in B##, for ##0\leq i\leq100##. Then let ##c_i \in C## such that ##c_i= b_{i+1}-b_{i}##. I don't know how to say that in...

Homework Statement http://imgur.com/dMw79w1 The image contains the problem as well as the answers to the previous problems. Homework Equations Net torque = 0 The Attempt at a Solution First, I set the axis of rotation to be the bottom of the table (where it goes through Fx and F0) τdue to...

Homework Statement calculate f3 weight and degree base on weight and angle given for f1 and f2, the whole thing has to achieve equilibrium. Homework EquationsThe Attempt at a Solution i forgot to copy down the formula since our team's equipment malfunctioned from the get go, so we spent the...

Homework Statement I have a quick question here, Since I have s_o(o) and s_o(1) do I do 2 table of truth for those or mix both and do one table of truth? the (1)/(0 ) are confusing me. Homework Equations w_o <= not d_i and (b_i(1) or d_i); s_o(0) <= d_i or b_i(1); s_o(1) <= not b_i(0) and...

P.S I know I am not supposed to use attachment but there are no way for me to input the table in a clean way... same for the logic circuit drawing. Would anyone mind helping me? 1. Homework Statement Homework Equations AND gates require both input to be True to get a true ouput NOT gates...

Homework Statement ((p_r)^(q_r))<-->((p^q)_r) Prove whether the following statement is a tautology , contigency or contradiction using a truth table. Homework EquationsThe Attempt at a Solution I did the truth table, but this whole thing is one statement no? What do I compare? the first half...

Homework Statement A rod of mass M and length L is placed horizontally on a table such that the center of mass is a distance L/6 from the edge of the table (CoM is hanging off the table). The rod is released from rest and slips after reaching an angle θ. Find the coefficient of friction \mu 2...

Homework Statement Mass m whirls on a frictionless table, held to a circular motion by a string which passes through a hole in the table. The string is slowly pulled through the hole so that the radius of the circle changes from ##l_1## to ## l_2## Show that the work done in pulling the string...

Homework Statement Consider a hash table with ##n## buckets, where external (overflow) chaining is used to resolve collisions. The hash function is such that the probability that a key value is hashed to a particular bucket is ##\frac{1}{n}##. The hash table is initially empty and ##K##...

Homework Statement uData is a 30x5 matrix with numbers. name_Database is a 30x1 cell array with strings of Names (e.g. Fake Subject 1, Fake Subject 2, Bob). What would fix the code so that the data aligns? (please see image for the misalignment). Homework EquationsThe Attempt at a Solution...

Homework Statement [/B] Find a substitution w and a constant k so that the integral x^5 e^(bx^2) dx can be written in the form kw^2 * e^(bw) dw, and evaluate the integral (answer may involve the constant b). Homework Equations Integral of x^2 e^bx dx = e^bx ((x^2 / b) - (2x/b^2) + (2/b^3)...

Today I bought this really cute little antique table made out of solid wood. The top however is in poor condition, the finish is worn through in many places. The rest of the table is fine, what is the best way to fix it up? I don't want to refinish the whole thing, I like to keep the original...

Homework Statement Let X be a normal random variable with mean 80 and standard deviation 5. What is the probability X is greater than 87? Less than 74? I understand how to compute the z score but I'm confused as to when I have to keep the number from the z-table or subtract 1 Homework...

Homework Statement Ok guys, its been a while since I have done this one so I don't even know where to begin. Here is the problem I have to complete: The power (in watts) from an engine is represented by the equation below, where t is the time in seconds. P = 30t^2.2 + 3t 1) Draw a table...

Homework Statement The coefficient of static friction between a static friction and a 20kg table and the floor is 0.29. The coefficient of kinetic friction between the same surfaces is 0.25. How much minimum push force is required to get the table moving? How much push force is required to...

I do not get what is going on here. Can someone please explain? This is sohard for me to understand. thank you

Logarithms N 0 1 2 293 46687 46702 46716 294 46850 46835 46864 295 46982 46997 47012 Prop. Pts 1 1.6 2 3.2 3 4.8 4 6.4 5 8.0 6 9.6 7 11.2 8 12.8 9 14.4 Find the value of $\log\left({29517}\right)$ Work: 4+$\log\left({2.9517}\right)$ Thanks for your help

Homework Statement A uniform rope of length L lies in a lump on a frictionless table. a very small piece at one end is held hanging down through a hole in the table just below the lump. This system is released, and the rope slides down through the hole. What is the speed of the other end of...

Homework Statement A solid spherical ball is placed carefully on the edge of a table in the position shown in the figure. The coefficient of static friction between the ball and the edge of the table is 0.5 . It is then given a very slight push. It begins to fall off the table. Find the angle...

Homework Statement 10.24 Is there any relationship between the type of treatment and the response? What form does the relationship take? Here's that data (column variables are responses): \newcommand\T{\Rule{0pt}{1em}{.3em}} \begin{array}{|c|c|c|c|c|} \hline Treatment & +Smear &...

Why do many multiplication tables for grade school students go up to 12x12, when a table up to 9x9 is sufficient for any multiplication problem?

What is the solution of |x/(x-2)| < 5 ? So, I did this the usual way of moving over the 5 to the left side and then cross multiplying and simplifying etc. However, I keep getting the wrong answer. I got x < 5/3 and x > 2, while the answer in the book says that it's x< 5/3 and x > 5/2. What...

What are the most reactive elements in the periodic table?

Hey Folks, I wanted to put together a single spreadsheet of subatomic particles (e-, ν, b, t, π Ξ, Σ, Δ, etc.) and their properties that have been measured (mass, mean lifetime, valence quark content, charge, spin, parity, etc.). I have been looking through the PDG website for some way to...

I'm arguing with a friend regarding the condition for a table to flip over assuming that the right contact point of its right leg with the ground (denoted hereafter by O) is held fixed i.e. the table cannot slip. The upper horizontal plate is a sort of a rod with mass m and both legs are...

Homework Statement There is a chain of uniform density on a table with negligible friction. The length of the entire chain is 1 m. Initially, one-third of the chain is hanging over the edge of the table. How long will it take the chain (in seconds) to slide off the table? Homework EquationsThe...

Homework Statement [/B] Determine the phase of the steam (compress liquid, saturated liquid, saturation mixture, saturated vapor, superheated vapor, or supercritical vapor). Use A-4 Table. T=110 Celsius P=55.732 kPa Homework Equations A-4 Table...

Homework Statement R134a rests in a compressed fluid can at 120psia, and a specific volume of 0.38ft3/lbm. What is its temperature and quality? Half of the mass is now vented off to the atmosphere. The can is allowed to exchange heat with the surroundings at 100°F until they are in thermal...

I'm now a 19 years old undergraduate physics student. I've a reasonable proficiency with calculus (well, no really...) but if you ask me 6*7 (unlike my mother and many other older people I know) I'll take awhile until I come up with an answer (I'll ask myself 6*5 and then add 12 to that result)...

Homework Statement http://imgur.com/BSntip0The Attempt at a Solution for part a, i got the solution to be F1 = xy'+x'y= x⊕y (XOR) , F2 = x .y (AND) for part b i don't understand how i would derive an equal equation that uses only NAND which is (xy') and inverter which is x'

Homework Statement Two pounds of water vapor at 30 psia fill the 4ft^3 left chamber of a partitioned system. The right chamber has twice the volume of the left and is initially evacuated. Determine the pressure of the water after the partition has been removed and enough heat has been...

http://3.bp.blogspot.com/-d-P219mnzkM/VA7NfcUiroI/AAAAAAAAB9g/q_NJrbt4UfM/s1600/CIMG3315.JPG 300 km/s respect to Earth = 330 or 270 km/s respect to Sun how big foce will register table's leg ? Symetry ? respect to what mass m is pushing pipe's wall ( how big friction left/right mass )...

Hi all, I was always of the belief that hydrogen did not belong to any group in the periodic table. After discussions, some say that a group 1 or 7 place might be more suitable. Any opinions would be welcomed hopefully from a physics point-of-view on this topic.Thanks in advance

This is a problem from the Goldstein text. It gives two point masses ##m_1## and ##m_2## connected by a string (negligible mass), where ##m_2## is suspended by the string through a hole in a smooth table; ##m_1## rests on the table. It is important to note that ##m_2## only travels in a vertical...

Homework Statement How close to the edge of the 26.0-kg table shown in the figure (Figure 1) can a 64.0-kg person sit without tipping it over? Homework Equations ∑F = 0 ∑T = 0 The Attempt at a Solution forces A (left leg) and B (right leg) are the forces from the two legs of the table...

I need to build a table saw miter gauge at about 1/4/-1/8 scale. The center axis of rotation seems pretty straightforward - I have many old rollerblade bearings - but I have no idea how to do the handle assembly (the cylindrical screw arrangement that locks and unlocks the angle) and the sliding...

Homework Statement A woman whose mass is 70 kg stands at the rim of a horizontal turn table that has a moment of inertia of 500 kg * m/s and a radius of 2 m. The system is initially at rest, and the turntable is free to rotate about friction less vertical axle through its center. The woman...

Here is the problem: The data referred to in this question were collected on 41 employees of a large company. The company is trying to predict the current salary of its employees from their starting salary (both expressed in thousands of dollars). The following is ANOVA table for simple...

Hi everyone, first time post here. Sorry if this isn't the place to ask, but I'm looking to settle disagreement and thought someone here might have the knowledge to set me straight. This is a slightly off color question to start with, and my lack of expertise in any science is not helping the...

Homework Statement A marble is accelerated to a horizontal velocity of 0.50 m/s by rolling it down a small ramp. The marble rolls off the table, which is 0.78 m high. As it falls, it hits a barrier on the way down. If the barrier is 0.15 m from the edge of the table, at what height from the...

(p ^ q) ->(p ▼ ~q) Need help creating a truth table (6 columns) for the above.Thanks