Note: You'll need the Normal Distribution Table.
A certain type of light bulb has a lifetime in hours which is normally distributed with mean μ=650 and standard deviation σ=40. What is the probablility that a randomly selected light bulb has a lifetime in the range (700, 850)?
Now this is...
I'm looking at a table of fatigue strengths for different steels. I would like to know what the figures mean. For instance, for S235 under streching/pressure it says 0\pm160 and 130\pm130. I believe the values are supposed to be average tension pluss/minus amplitude tension, but I'm not sure...
A hash table is a storage structure that calculates the storage address from a record key, k where f1(k) returns the storage address. Sometimes the hash function returns the same address for several keys (called collision). To fix this problem, a scheme called secondary hashing uses a sequence...
A book on a table.
the gravitational force of attraction of the bookon the Earth is negligible...
if the reaction force is the electromagnetic force of repulsion of the book on the table, then why is the electromagnetic force of the table on the book negligible??
A book on top of a table...
A book on Earth that is not moving is sitting on top of a table. There is a force pulling the book towards the ground (gravity) and a normal force in the opposite direction. But what is the NET force excerted by the atomosphere? I also have a follow up question...
I want to include an excel table in a Latex document. How could I do that?
I have tried to print the table to a file .eps, but that does not give me a good result.
Is there another way?
dining table seating question
12 persons sitting in three dining table in five days. How to arange the seating so that they meet each other in five days?
I got it. thanks alot.
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...
A thin uniform stick of mass m with its bottom end resting on a frictionless table is released from rest at an angle A to the vertical. Find the force exerted by the table on the stick at the moment of release. Express your answer in terms of m, g and A.
Ive been reliably informed (from the...
A bowling ball of radius 6'' slides off the edge of a table of height 20''. How far from the base of the table does it land? The ball is initialy at rest, right on the edge, but you bump into the table and it slides off. Assume no friction. Any help? Thanks!
Hello
I am thinking of investigating a problem for a project by writing a computer program to solve wether or not it is possible to...
Hit the white ball for a break on a pool table with the correct velocity and angle to get every single one of your balls in, one by one (striking each ball...
A 100 Newton table surface (table without the legs) is attached to hinges in a wall. a chair hold the table surface in a horizontal position . The chain (chain forms a hypoteneus with the table surface and the wall) is attached to position in the table surface 0.25m from the end of the table...
I'm requesting help for a physics problem I have made up.
Let's say we put a ball on the edge of a table, with the center of the ball being a teeny weeny bit outside the edge of the table. In other words, if we have a coordinate system, the edge of the table is at 0,0, the center of the ball...
A backpack full of books weighing 47.0 N rests on a table in a physics laboratory classroom. A spring with a force constant of 150 N/m is attached to the backpack and pulled horizontally. If the spring stretches by 2.20 cm before the backpack begins to slip, what is the coefficient of static...
Amortization table question please help
Vanna has just financed the purchase of a home for $200 000. She agreed to repay the loan by making equal monthly blended payments of $1500 each at 9%/a compounded monthly
I need to create an amortization table using excel, I think I can do that...
the only tables that I see go from -3 to 3 in my textbooks. but I keep seeing problems on the textbooks tha ask for p( -4.5 < z < .5)
how do I solve this?
how to calculate when normal distriubtion table is not enough??
so the values for the standard normal distribution table goes from [-3, 3]. I'm asked to evaluate an integral from -infinity to -4.32.
how do I do that?
I have this question which is confusing as it should be harder than it appears...
A uniform chain of length L lays on a frictionless table top. Suppose one link just hangs over the table's edge so that the chain begins to fall.
Let x be the amount of chain that has fallen. What is the...
Hi we're beggining to label the orbitals with s p d structures...grade 11 chemistry
The question is "Explain why the 2+ ion is the one that tends typically to form"
Ive answered the question above this one which says "Ca element 20 forms a 2+ ion. Write the electron configuration of neutral...
"Particles A, B and C , each of mass m, lie at rest in a straight line in the order stated. A is projected directly towards B with velocity u. The coefficient of restitution is 0.5 in each impact that follows. Show that there will be three impacts in total and find the final velocities of...
Hi, I really need help on the following questions and would appreciate it if someone could ASAP! Thank you!
1) a bullet of mass m is moving horizontally with speed v when it hits a block of mass 100m that is at rest on a horizontal frictionless table. The surface of the table is a height h...
Hi, I really need help on the following questions and would appreciate it if someone could ASAP! Thank you!
1) a bullet of mass m is moving horizontally with speed v when it hits a block of mass 100m that is at rest on a horizontal frictionless table. The surface of the table is a height h...
Three legs placed equal distances apart on the edge support a 36-kg round table. What minimum mass, placed in the table's edge, will cause the table to turn over? Hint: Place the mass equally inbetween two legs.
Im studying for my exam and going through problems I got wrong, trying to fix...
1. A particle mass attached to one end of a light spring is executing SHM on a smooth horizontal table. If another identical particle is attached to the other end of the spring, what is the period of oscillation?
I don't know how to figure this problem out...I used to deal with a spring fixed...
A round table weighing 36 kg is supported by three equally placed supports. How much weight is required to tip the table over if the weight is placed equally inbetween two supports?
The answer is 36, I am curious if it is just a coincedence that its 36 or if it is always equal to the weight...
A 198g wood block is firmly attached to a very light horizontal spring, as shown in the figure below.
The block can slide along a table where the coefficient of friction is 0.287. A force of 23.1 N compresses the spring 17.7 cm. If the spring is released from this position, how far...
Assume the weight of a pool ball is .17kg. If the ball traveled 1.2 m in 5.3 seconds, what is the force of Friction and coefficient of friction between the pool ball and the table?
Now, All I know how to do it calculate the normal force which is (9.8)(.17) = .1666 but where do i get from here?
Hi all,
For some time now, I've been looking for a good magazine / journal which handles physics.
Coffee table should be interpreted like in Integrals definition:
As of today, I've found some popular ones, like "new scientist", "scientific american". The issue I have with them that you...
HELP! PlEaSe
Okay, here is my problem: In a wild shot, Bo knocks a pool ball of mass of .85 kilograms offa 95-cm high pool table, and the ball hits the floor with a speed of 6.0 m/s. How fast was the ball moving when it left the pool table?
I don't want to know the answer, I just want to know...
Recommend "coffee table" books
Could anyone recommend some good physics and mathematics "coffee table" books (ie. some "must reads".) I'm talking along the lines of "Uncle Petros and Goldbach's Conjecture" and "Euclid's Window".
:cry:
I need help with the following problem, I have tried a few different things, but none of them seem to be working:
Two blocks are stacked on a table. The upper block has a mass of 8.2 kg and the lower block has a mass of 35 kg. The coefficient of kinetic friction between the lower...
On a frictionless horizontal air table, puck A (with mass 0.366 kg) is moving toward puck B (with mass 0.254 kg ), which is initially at rest. After the collision, puck A has velocity 0.119 m/s to the left, and puck B has velocity 0.655 m/s to the right.
a) What was the speed of puck A (Vai)...
The only thing we know is conscious - ourselves - is a lifeform based on carbon, which is in group 4 of the Periodic Table.Silicon is too.Since silicon is found in computers this raises an intriguing possibility that computers could experience emotions and colours and sounds and so on.Silicon...
Project Help
I have a Science project due. I am a little gridlocked...
I would like to incorporate a mystery type game to this. What I have is the board and rules, but I need questions. 4 sets.
Story (For those who have completed GTA: San Andreas, you may recognize some of the scenarios)...
Periodic Table Game Project HELP!
I have a Science project due. I am a little gridlocked...
I would like to incorporate a mystery type game to this. What I have is the board and rules, but I need questions. 4 sets.
Story (For those who have completed GTA: San Andreas, you may recognize some...
I was wondering what is the equation that gives the values in a Jefferys – Bullen Table?
Specifically, what’s the equation for finding the distance (or angle) from a seismic station to the epicentre of an earthquake using the difference in travel times between S and P waves as recorded by the...
Let's say I'm communicating with a SQL (local) database using sqlite. How would i go about displaying this database as a table in a win32 program using either dev-c++ or MSVS++?
I'm a bit weak in historics. Maybe some englishman could help me:
Did the King Arthur exist in reality?. Is Avalon in any place of England?.
Is Camelot a real place?. Where's the Round Table?.
I've just read something of it, and I saw a lot of films about it, but I cannot believe...
Q.
A physics student is pushing a lab table across the floor. The table as a mass of 36 kg. The coeffient of static friction between the table and the floor is μs = 0.21 and the coefficient of kinetic friction is μk = 0.16.
a) She initially pushes with a force of 64 N. What is the...
A uniform chain of length 8.00m initially lies stretched out on a horizontal table.
a)
If the coefficient of static friction between the chain and the table is 0.600, show that the chain will begin to slide off the table if at least 3.00m of it hangs over the edge of the table.
b)...
Anyone has any clue to these questions? They are from a contest last year.
Please Help and if you don't mind... please explain in detail.. Thanks!
1. A library has between 1000 and 2000 books. Of these, 25% are fiction, 1/13 are biographies and 1/17 are atlases. How many books are either...
hi,
i need some help w/ this problem:
a) A block of mass 2.00 kg is pushed 2.32 m along a frictionless horizontal table by a constant 17.7 N force directed 25.5 degbelow the horizontal. Determine the work done by the applied force.
b) Determine the magnitude of the normal force exerted...
low composition of sodium in table salt?
today i went to supermarket for buying some food, and i discovered that some salt which is low amount of sodium??how can it be?as i learned from chemistry , the ratio of sodium and chloride is 1 to 1 .
I've got one of those "research in other resources" questions in my chemistry homework. (meaning the info isn't in the lecture or the text, I guess ). It goes like this:
Consider Group 1A and Group 1B of the periodic table. The text states that although A groups have very regular patterns...
hi, I am having a little trouble with the last part of this problem.
A particle of mass m is moving on a frictionless horizontal table and is attached to a massless string, whose other end passes through a hole in the table, where i am holding it. Initially the particle is moving in a...
heres the problem:
A person pulls a heavy load of mass 37kg up the side of a building by using a frictionless pulley. The load travels up a distance of 7.5m. Take the load to move with ocnstant velocity and ignore any acceleration at the beginning or end of the move. How much work is done by...