Thursday
April 17, 2014

Search: A worker stands still on a roof sloped at an angle of 33.8° above the horizontal. He is prevented from slipping by a static frictional force of 357 N. Find the mass of the worker

Number of results: 818,271

physics
A worker stands still on a roof sloped at an angle of 23° above the horizontal. He is prevented from slipping by a static frictional force of 540 N. Find the mass of the worker.
Thursday, February 3, 2011 at 8:27pm by Anonymous

physics
What is the gravitational field strength at a height h above the surface of the Earth? R is the radius of the earth gR2(R+h)2 gR(R+h) g(R−h)R g(R−h)2R2 2 The instrument used for experimental determination of the value of the universal gravitational constant G is ...
Friday, March 14, 2014 at 7:24am by A

Physics Classical Mechanics
A person of mass m2= 85.0 kg is standing on a rung, one third of the way up a ladder of length d= 3.0 m. The mass of the ladder is m1= 15.0 kg, uniformly distributed. The ladder is initially inclined at an angle θ= 35.0∘ with respect to the horizontal. Assume that ...
Tuesday, November 26, 2013 at 10:26am by A

Physics Classical Mechanics
A uniform steel beam of mass m1= 300.0 kg is held up by a steel cable that is connected to the beam a distance L= 5.0 m from the wall, at an angle θ= 40.0∘ as shown in the sketch. The beam is bolted to the wall with an unknown force F⃗ exerted by the wall on ...
Tuesday, November 26, 2013 at 10:25am by A

algebra
of radius 54 meters subtended by the central angle 1/9 radian. s(arc length = meters How is the answer 6? s denotes the lenght of the arc of a circle of radius r subtended by the central angle 0. Find the missing quantity. The radius r of the circle is ? feet How is 24 the ...
Sunday, December 9, 2012 at 12:12am by Find the length s of the arc of a circle

Physics - frictional force
Pushing a grocery cart with a force of 95N applied at an angle of 35deg own from the horizontal, makes the cart travel at a constant speed of 1.2m/s. What is the frictional force acting on the cart?
Thursday, August 5, 2010 at 1:35pm by Shaila

n/a
Inter-department Services Step Method : O'brain's Department Store Allocates the Cost of personnel and Payroll to three retail Sales Department Housewares , Clothing and Furniture . In addition to providing services to the operating department. Personnel and Payroll provide ...
Saturday, June 4, 2011 at 4:26pm by Anonymous127

Probability
Alice has two coins. The probability of Heads for the first coin is 1/3, and the probability of Heads for the second is 2/3. Other than this difference, the coins are indistinguishable. Alice chooses one of the coins at random and sends it to Bob. The random selection used by ...
Wednesday, April 2, 2014 at 6:10am by A

probability
The vertical coordinate (“height") of an object in free fall is described by an equation of the form x(t)=θ0+θ1t+θ2t2, where θ0, θ1, and θ2 are some parameters and t stands for time. At certain times t1,…,tn, we make noisy observations Y1,…,Yn, ...
Wednesday, April 2, 2014 at 6:12am by A

Physics
A uniform horizontal rod of mass 2.2 kg and length 0.63 m is free to pivot about one end as shown. The moment of inertia of the rod about an axis perpendicular to the rod and through the center of mass is given by I = ml2/12 If an 8.5N force at an angle...
Tuesday, December 6, 2011 at 7:33pm by A

chemistry
A vitamin C tablet containing 250 mg of ascorbic acid (C6H7O6; Ka = 8.0 x 10-5 is dissolved in a 250 mL glass of water. What is the pH of the solution? i tried answering this question multiple times but i still get it wrong.... can someone help? step-by-step please. what i did...
Tuesday, March 20, 2012 at 12:43am by Finding the pH of a weak acid?

physics
A mass m = 4 kg hangs on the end of a massless rope L = 2.02 m long. The pendulum is held horizontal and released from rest. 1)How fast is the mass moving at the bottom of its path? 2)What is the magnitude of the tension in the string at the bottom of the path? 3)If the ...
Tuesday, October 11, 2011 at 11:31pm by a

physics
a spring is fastened at one end of a force of 50n stretches the spring 20 cm find the work done
Sunday, January 24, 2010 at 11:53am by a spring is fastened at one end of a force of 50n stretches the spring 20 cm find the work done

Physics Classical Mechanics
A crane is configured as below, with the beam suspended at two points l1 and l2 by each end of a cable passing over a frictionless pulley. The two ends of the cable each make an angle θ with the beam. A counterbalance object C with mass mC is fixed at one end of the beam...
Tuesday, November 26, 2013 at 10:24am by A

Astronomy help
I have already solve the problems in many time, but still cannot get the correct answer, can someone kindly help me to solve the problem, please? 1. Suppose the Moon is at a (center-to-center) distance D from Earth. Find an exact expression for the magnitude of the tidal force...
Thursday, December 12, 2013 at 5:46am by A

Physics
A baseball is thrown with an initial velocity of 37 m/s at an angle of 26 degrees above horizontal, from the top of the building which is 72 meters high. A. What will be the horizontal and vertical components of this baseballs velocity? B. what will be the vertical velocity of...
Wednesday, January 23, 2013 at 9:42pm by A

Physics Classical Mechanics
A yo-yo of mass m rests on the floor (the static friction coefficient with the floor is μ). The inner (shaded) portion of the yo-yo has a radius R1, the two outer disks have radii R2. A string is wrapped around the inner part. Someone pulls on the string at an angle β...
Thursday, November 7, 2013 at 1:55pm by A

physics
A mass m = 73 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 17.9 m and finally a flat straight section at the same height as the center of the loop (17.9 m off the ground). Since the mass would not make it around the loop if ...
Tuesday, October 11, 2011 at 11:31pm by a

Physics Classical Mechanics
A light inflexible cable is wrapped around a cylinder of mass m1 , radius R , and moment of inertia about the center of mass Ic . The cylinder rotates about its axis without friction. The cable does not slip on the cylinder when set in motion. The free end of the cable is ...
Thursday, November 7, 2013 at 1:54pm by A

Write a fictional, first-person account of the cre
This is what my assignment is Describe, as if you were a member of that subordinate group, where the group originated, how it came to the United States, and one or two locations in the United States where members of your group live. Be creative in your fictional descriptions, ...
Monday, August 29, 2011 at 9:07pm by Deb

Staistics
Problem 3 John Tukey, the mathematician who came up with the idea of the stem and leaf plot, developed several other methods that were brilliant combinations of simplicity and effectiveness. One such is the box plot, also known as a box and whisker plot. It is, not ...
Monday, February 25, 2013 at 3:31am by A

PHYICAL
100 N block is on rough horizontal surface. If a horizontal force F=40 N is applied and the block just start slide. What is the value of the static coefficient.
Sunday, July 8, 2012 at 3:28pm by a

Civics
In every stage of these oppressions we have petitioned for redress in the most humble terms: our repeated petitions have been answered only by repeated injury. Which of the following statements best explains this quote from the Declaration of Independence? The colonists have ...
Thursday, January 10, 2013 at 7:56pm by A

physics
A man drags a 71.5-kg crate across the floor at a constant velocity by pulling on a strap attached to the bottom of the crate. The crate is tilted 24.5° above the horizontal, and the strap is inclined 63.0° above the horizontal. The center of gravity of the crate coincides ...
Thursday, March 21, 2013 at 4:24pm by A

Physics
A man drags a 71.5-kg crate across the floor at a constant velocity by pulling on a strap attached to the bottom of the crate. The crate is tilted 24.5° above the horizontal, and the strap is inclined 63.0° above the horizontal. The center of gravity of the crate coincides ...
Thursday, March 21, 2013 at 4:36pm by A

algebra
Thanks and yes it's suppose to be a Greek theta.
Sunday, December 9, 2012 at 12:12am by Find the length s of the arc of a circle

trig/precalculus
A crate weighing w pounds sits on a ramp positioned at an angle of x with the horizontal. The forces acting on this crate are modeled by the equation Mwcosx = wsinx, where M is the coefficient of friction. What is an expression for M in terms of x? A. M = tanx B. M = cotx C. M...
Tuesday, December 13, 2011 at 12:31am by A

English Vocabulary fill in the blank
1. Degenerate 2. Implausible 3. incoherent 4. intercede 5. intricate 6. sanctuary 7. scrutiny 8. sinister 9. suffice 10. vulnerable need help 1-2 Birds feel ___ to attack when they are out in the open where shrubbery is sparse. To attract them to your bird feeder, put it near ...
Friday, September 20, 2013 at 9:47pm by An

english
the essay needs to be proof read and any suggestions or corrections will be greatly helpful! The Unbiased Killer Caner is known as unbiased killer that knows no race, age or sex of it victims. The disease lung cancer is the Number one cause of cancer deaths for United States ...
Saturday, December 17, 2011 at 11:56am by n/a

physics
If a ball is thrown with a velocity of 25m/s at an angle of 37degrees above the horizontal, what is the vertical component of the veolocity
Thursday, October 6, 2011 at 7:30pm by n/a

physics
A bicycle wheel has a diameter of 64.2 cm and a mass of 1.79 kg. Assume that the wheel is a hoop with all of the mass concentrated on the outside radius. The bicycle is placed on a stationary stand and a resistive force of 115 N is applied tangent to the rim of the tire. A....
Sunday, October 24, 2010 at 2:24pm by A

Physics Classical Mechanics
You are holding a ball of mass m2 in your hand. In this problem you will solve for the upward force T⃗ that the tendon of your biceps muscle exerts to keep the forearm horizontal and the downward force F⃗ that the upper arm exerts on the forearm at the elbow joint...
Tuesday, November 26, 2013 at 10:27am by A

physics
The drawing below shows a person who, starting from rest at the top of a cliff, swings down at the end of a rope, releases it, and falls into the water below. There are two paths by which the person can enter the water. Suppose he enters the water at a speed of 18.0 m/s via ...
Friday, February 22, 2013 at 2:39pm by A

maths
the 1st term of an ap is twice the common difference find in terms of the 5th term of the ap
Saturday, October 20, 2012 at 11:51am by d 1st term of an ap is twice the common difference find in terms of the 5th term of the a

Physics Classical Mechanics
A rod is lying at rest on a perfectly smooth horizontal surface (no friction). We give rod a short impulse (a hit) perpendicular to the length direction of the rod at X. The mass of the rod is 3 kg, and its length is 50 cm. The impulse is 4 kg⋅m/sec. The distance from ...
Thursday, November 7, 2013 at 1:59pm by A

PHYSICS HELP
A 320-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 25° with the horizontal. What is the angular speed of the sphere at the bottom of the slope if it starts from rest?
Wednesday, November 3, 2010 at 1:43pm by A

Physics Classical Mechanics
A turntable is a uniform disc of mass m and radius R. The turntable is initially spinning clockwise when looked down on from above at a constant frequency f0. The motor is turned off at t=0 and the turntable slows to a stop in time t with constant angular deceleration. (a) ...
Thursday, November 7, 2013 at 1:52pm by A

A Disturbing Vision of Buddha
Hello everyone, As you all know, I decided to undertake a Buddhist-style fast this week in order to spend some time meditating and searching for enlightenment. Beginning on Monday and culminating on Wednesday (Wesak, a major Buddhist festival), I spent three days sitting on a ...
Saturday, May 5, 2007 at 10:09pm by Tyler

Physics Classical Mechanics
A pulley of mass mp , radius R , and moment of inertia about the center of mass Ic=12mpR2 , is suspended from a ceiling. The pulley rotates about a frictionless axle. An inextensible string of negligible mass is wrapped around the pulley and it does not slip on the pulley. The...
Thursday, November 7, 2013 at 1:53pm by A

physics
A thick sheet of plastic, n = 1.500, is used as the side of an aquarium tank. Light reflected from a fish in the water has an angle of incidence of 30.0°. At what angle does the light enter the air?
Tuesday, May 14, 2013 at 3:19pm by A

7th Grade Language Arts
Using the image of a dove to represent the idea of peace in a poem is an example of
Wednesday, April 3, 2013 at 5:35pm by Using the image of a dove to represent the idea of peace in a poem is an example of

math
A steel ball is dropped from rest from the roof of a building. An observer standing behind a window that is part way down the building 120 cm high notes the ball takes 0.125 s to fall from the top to the bottom of the window. The ball continues to fall, makes an elastic ...
Saturday, September 8, 2012 at 10:51pm by A

bio (homeostasis)check
Please Check this for me. 1. Which process involves both passive and active transport? a.)facilitated diffusion<---- b.)cotransport c.)bulk transport d.)transport through electrogenic pumps e.)osmosis 2. How does the liver in a healthy body respond to elevated blood sugar ...
Saturday, February 9, 2013 at 10:17pm by A

algebra
Axia College Material Appendix D Landscape Design Landscape designers often use coordinate geometry and algebra as they help their clients. In many regions, landscape design is a growing field. With the increasing popularity of do-it-yourself television shows, however, many ...
Sunday, January 10, 2010 at 11:22pm by compare and contrast two theories on the causation of crime

literacy
which search engine would be best to use for a broad search for scholarly literature
Monday, October 8, 2012 at 3:34pm by which of the following is an article from a popular magazine

PHYSICS
A bathysphere used for deep sea exploration has a radius of 1.60 m and a mass of 1.20 104 kg. In order to dive, the sphere takes on mass in the form of sea water. Determine the mass the bathysphere must take on so that it can descend at a constant speed of 1.00 m/s when the ...
Thursday, November 11, 2010 at 6:08pm by A

N/A
I'm just needing a question to be ask: If you were head of health informaton management department at a hosptial later an FBI agent came to you with a search warrant and place it in your hand. And he ask to speak with you about the hopital's health records. How should you ...
Thursday, May 20, 2010 at 12:43pm by CC

the big idea of energy
ITS DUM
Tuesday, December 5, 2006 at 2:18pm by A

Religions of the World
How modern civilization has impacted the spiritual lives of indigenous people? Many indigenous people were forced or convinced to change their religions when their lands were invaded by Christians or Muslims. Some of these people, however, kept their basic spirituality while ...
Monday, July 9, 2007 at 7:38pm by al

physics
A blue ball is thrown upward with an initial speed of 20.6 m/s, from a height of 0.8 meters above the ground. 2.5 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 8.2 m/s from a height of 23.7 meters above the ground. The force of ...
Thursday, September 15, 2011 at 5:12pm by a

Research Project on Computer Confidentiality
I have a research paper where I need to write a paragraph answering each question. The instructions are to go to the American Medical Assocation's web site at ama-assn and use the search button on the upper right to look for ethical opinions oncomputer confidentiality. Based ...
Wednesday, November 12, 2008 at 5:52pm by A

physics
A small 0.482-kg object moves on a frictionless horizontal table in a circular path of radius 0.77 m. The angular speed is 6.18 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the circle. Someone under...
Thursday, March 21, 2013 at 4:45pm by A

phy
A blue ball is thrown upward with an initial speed of 20.6 m/s, from a height of 0.8 meters above the ground. 2.5 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 8.2 m/s from a height of 23.7 meters above the ground. The force of ...
Tuesday, September 13, 2011 at 12:22am by a

Physics - mass of a galaxy
A star at the edge of the Andromeda galaxy appears to be orbiting the center of that galaxy at the speed of about 200km/s. The star is about g*10^9AU from the center of the galaxy. Calculate a rough estimate of the mass of the Andromeda galaxy. Earth orbital radius is 1.40*10^8
Saturday, December 4, 2010 at 5:16am by Farah

business
Truthfully, the only difference between you and garage floor coatings experts is time. If you'll invest a little more time in reading, you'll be that much nearer to expert status when it comes to garage floor coatings. The coating process is specifically designed to prevent ...
Saturday, December 10, 2011 at 5:03am by How to increase the life of Floor

Physics Classical Mechanics
A uniform stick of mass m and length l is suspended horizontally with end B at the edge of a table as shown in the diagram, and the other end A is originally held by hand. The hand at A is suddenly released. At the instant immediately after the release: (a) What is the ...
Thursday, November 7, 2013 at 1:56pm by A

Physics - mass of a galaxy
1 a.u. = 1.40*10^8 km = 1.40*10^11 m For the mass of the entire galaxy, M, you will have to assume a spherical distribution of mass, with the star in question at the outside, at distance R. In that case, the centripetal acceleration of the star is V^2/R = G M/R2 Solve for M. M...
Saturday, December 4, 2010 at 5:16am by drwls

physics
A hydraulic lift has a leak so that it is only 6.0 × 101% efficient in raising its load. If the large piston exerts a force of 1.00 × 102 N when the small piston is depressed with a force of 15 N and the radius of the small piston is 18 cm, what is the radius of the large piston?
Thursday, April 10, 2014 at 3:31am by Radius of a piston

Physics Classical Mechanics
A playground merry-go-round has a radius of R= 2 m and has a moment of inertia Icm= 9×103kg⋅m2 about a vertical axis passing through the center of mass. There is negligible friction about this axis. Two children each of mass m= 30kg are standing on opposite sides at a ...
Thursday, November 7, 2013 at 1:53pm by A

DEATH OF A SALESMAN!!!
Why is the word “Salesman” capitalized in the stage directions that open the play? help! It's been ages since I read this, and I don't have a copy here (and since it's still copyrighted, it's not available online!) -- but my best guess is that the "Salesman" (the main ...
Thursday, October 26, 2006 at 12:53pm by Anonymous

the parts of speech
1. In the following sentence, identify the part of speech of the italicized word. Large fish swim swiftly in the sea. A. Verb B. Noun C. Adjective D. Adverb 2. In the following sentence, identify the part of speech of the italicized word. Large fish swim swiftly in the sea. 3...
Monday, April 25, 2011 at 5:10pm by Anonymous

The Equation of Time
The reason for this post is I think I understand it and am seeking reassurance. I am just starting to study celestial navigation and am trying to get to grips with some of the fundamentals. I need to use the Equation of Time of the Sun to establish Longitude. Longitude is time...
Tuesday, October 31, 2006 at 1:30pm by Mike

physics
A mass m = 14.0 kg is pulled along a horizontal floor with NO friction for a distance d =8.7 m. Then the mass is pulled up an incline that makes an angle θ = 27.0° with the horizontal and has a coefficient of kinetic friction μk = 0.41. The entire time the massless ...
Monday, October 1, 2012 at 6:32pm by need of help

Physics
This is a 2 part question, and I'm fine on part 1. However, for background info, here is part 1: A motorcycle racer traveling at 145km/h loses control in a corner of the track and slides across the concrete surface. The combined mass of the rider is 243kg. The steel of the ...
Thursday, January 31, 2013 at 3:55pm by A

Physics - forces acting at an angle
The physics of tobogganing and forces at an angle: A child is tobogganing down a hillside. The child and the toboggan together have a mass of 50.0kg. The slope is at an angle of 30.0 degrees to the horizontal. Assume that the positive y-direction is pointing in the direction ...
Saturday, January 5, 2013 at 10:56pm by Leo

Help from The Economyst
I have put together my set of questions that I posted and answered them with yor help and direction, would you mind looking at the finished product for correctness. I still got lost on some of it I think. I could send them to you. EY Post them. We do not engage in Email with ...
Sunday, June 10, 2007 at 12:24pm by Ed

meaning of a word
The constitution was an attemt to addrss the problems that existed under the Articles of Confederation. A) list and explain three problems of decentralized power under the articles of confederation. for each problem identify and explain one solution that the constitution ...
Tuesday, August 8, 2006 at 11:26pm by apoorva

The lord of the flies-English
Hey guys. could you please help me out with this? From chapter 12: 1)What does Ralph say to the twins when they refuse to help him? 2)How does the author describe Ralphs flight accross the island? 3)Why does Ralph say that he is in charge of the island? If you could help me ...
Tuesday, November 21, 2006 at 6:30pm by Help!

Phsics
I want to see the calculations.
Wednesday, February 1, 2012 at 8:55am by The range of a target is found to be 20km. A shell leaves a gun with a velocity of 500ms-1. What must be the angle of elevation of the gun if the ground is leueled?

Physics
I need the answer
Tuesday, January 31, 2012 at 10:03pm by The range of a target is found to be 20km. A shell leaves a gun with a velocity of 500ms-1. What must be the angle of elevation of the gun if the ground is leueled?

physics
A block with mass m = 14 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4545 N/m after being compressed a distance x1 = 0.515 m from the spring’s unstretched length. The floor is frictionless except for a rough patch a distance d = 2....
Tuesday, October 11, 2011 at 11:32pm by a

Geology
Respond to the following scenario: o Your younger brother is in 5th grade. He comes home and tells you to look at an animation his teacher showed him in geology class. o Review the Continents of the Past animation on this weekˇ¦s aXcess page. o After viewing the animation, ...
Friday, September 11, 2009 at 7:29pm by A

physics
A mass hangs on the end of a massless rope. The pendulum is held horizontal and released from rest. When the mass reaches the bottom of its path it is moving at a speed v = 2.3 m/s and the tension in the rope is T = 22.4 N. 1. What is the mass? 2. If the maximum mass that can ...
Friday, September 28, 2012 at 12:36am by hater of physics

Find force
Find force in the strut: Wall is 20 ft high. Strut begins 4 ft lower, so the "altitude" of strut is 16 ft. "Base" of strut from wall to end of strut = 8 ft. strut is 12 ft on center There is a wind force against wall = 20 lb/ft ^2 Teacher said find wind force: w = (12 ft)(20 ...
Wednesday, April 2, 2014 at 1:15pm by Please Need Help

A plane flies horizontally at an altitude of 5 km
A plane flies horizontally at an altitude of 5 km and passes directly over a tracking telescope on the ground. When the angle of elevation is π/3, this angle is decreasing at a rate of π/4 rad/min. How fast is the plane traveling at that time? (Round your answer to ...
Monday, March 14, 2011 at 8:00pm by yolana

Math
Write a ratio for the situation in three ways, comparing the first quantity to the second quantity. A zoo has 19 monkeys and 10 chimpanzees. 19 to 10, 19:10, (This) 10 to 29, 10:29, 19 to 29, 19:29, 10 to 19, 10:19, Write three ratios equal to 5/40. 2/14, 3/21, 4/28 1/8, 2/16...
Thursday, January 10, 2013 at 9:53am by A

a
For a fixed rate, a fixed principal amount, and a fixed compounding cycle, the return is an exponential function of time. Using the formula, , let r = 10%, P = 1, and n = 1 and give the coordinates (t, A) for the points where t = 0, 1, 2, 3, 4. Round your answer to the ...
Thursday, March 8, 2007 at 11:15pm by Jade

Math
To make my question clearer, I will ask: In fraction word problems I have a hard time telling the difference between a multiplying problem and a division problem, can someone tell how to tell the difference.{In detail} Thank You Give us an example of both. Then we can show you...
Thursday, July 7, 2005 at 5:37pm by N/A

Physics Classical Mechanics
A solid disk 1 with radius R1 is spinning freely about a frictionless horizontal axle l at an angular speed ω initially. The axle l is perpendicular to disk 1, and goes through the center S of disk 1. The circumference of disk 1 is pushed against the circumference of ...
Thursday, November 7, 2013 at 1:57pm by A

Physics help needed
In the figure below, block 1 of mass m1 = 3.0 kg and block 2 of mass m2 = 1.0 kg are connected by a string of negligible mass. Block 2 is pushed by force F of magnitude 30 N and angle θ = 20°. The coefficient of kinetic friction between each block and the horizontal ...
Friday, October 26, 2012 at 3:04am by The master

n/a
normally, you want the titration to be end result of pH7. Crystal violet changes color at about 1.6, far from titrations.
Monday, October 3, 2011 at 3:03pm by bobpursley

socials--Barkerville the Evolution of a town
Would you have preferred to mine or to operate a business that supported the miners, if you had been an inhabitant of Barkerville during its gold rush? I would have chosen to operate my own business to support the miners. By choosing to run my own business, I could help and ...
Wednesday, June 8, 2011 at 8:32pm by Emma

physics
Jeff of the Jungle swings on a vine that is r = 6.40 m long. At the bottom of the swing, just before hitting a tree, Jeff's linear speed is 7.10 m/s.
Monday, October 29, 2012 at 10:20pm by Jeff of the Jungle swings on a vine that is r = 6.

social worker ( training) I am a mature student 53yrs of experience.
I do not have the answer, but putting people in confined spaces with people that have commited crimes is not, and should not be believed to be the most effective way of halting a disturbed pattern of social behaviour. A more ameniable and effective aproach might be to have ...
Tuesday, March 18, 2008 at 3:51pm by Jim

science
What is the route(s) of entry for the toxic substance to the bodyfollowing: A hiker becomes violently ill after being bitten by a rattlesnake
Sunday, February 6, 2011 at 8:55pm by roof

An motorbike traveling down the road at a constant speed emits sound waves from its siren.a boy stand on the side of the road with a detector which register sound waves at a frequency of 460 hz as the motorbike approaches him.after passing him and moving away at the same constant speed,sound waves of frequency 390 hz registered.calculate the speed at which the motorbike is moving?
454
Wednesday, October 21, 2009 at 1:49pm by Anonymous

physics
43.17
Tuesday, October 21, 2008 at 7:35am by A 47.0-g golf ball is driven from the tee with an initial speed of 50.0 m/s and rises to a height of

Death of a salesman!
When Linda is left alone to herself by Willy’s grave, she cannot, at first, cry. However, when she says, “We’re free and clear” (139), she starts to sob deeply. Why? I think for any reason a wife would cry. She loved Willy. It was ironic that in the end he didn't live to see ...
Thursday, November 30, 2006 at 4:11pm by WillY

Engineering
Here we consider instead dissolving guns (which we will assume are pure iron) with sulfuric acid. Fe+H2SO4->FeSO4+H2 The characters realize that their hideout has been discovered by the police and they still have a last handgun that weighs 0.25 kg to dissolve. The cops will...
Sunday, December 15, 2013 at 10:28am by A

a ton of calc
basically, my teacher gave us a bunch of optimization problems and i've been working on them for hours and can't get them. if i could have help with maybe the first four, that would be AWESOME. thanks. 1) find the point on the graph of the function y = x^2 that is closest to ...
Wednesday, September 9, 2009 at 11:08pm by bleh

Physics Classical Mechanics
A physical pendulum consists of a disc of radius R and mass m fixed at the end of a rod of mass m and length l . (a) Find the period of the pendulum for small angles of oscillation. Express your answer in terms of m, R, l and acceleration due to gravity g as needed (enter m ...
Thursday, November 7, 2013 at 1:57pm by A

death of a salesman
how was Willy Loman a tragic figure in the play? First of all, make sure you are clear on what a tragic figure is: http://www.answers.com/tragic Then be sure to read the character analyses at these sites: http://www.sparknotes.com/lit and http://www.gradesaver.com/...
Wednesday, November 1, 2006 at 11:04am by Willy

Phenotype of a smidget???
The smidget is a tiny mammal whose sex (like humans) is determined by the presence/absence of a Y chromosome and whose dosage compensation mechanism is just like humans as well. But, this mammal differs from humans in having only two of its thousands of genes on its X ...
Thursday, December 4, 2008 at 1:26am by Pj

Nuclear Physics
Consider an alpha particle with kinetic energy E_ (alpha) which is incident on a material. Show that the distance traveled, ∆x, by the alpha particle after it has lost an amount of energy ∆E, in the material, can be found by the following equation: ∆x=Range (...
Tuesday, October 30, 2012 at 11:15am by A

Nuclear Physics
Consider an alpha particle with kinetic energy E_ (alpha) which is incident on a material. Show that the distance traveled, ∆x, by the alpha particle after it has lost an amount of energy ∆E, in the material, can be found by the following equation: ∆x=Range (...
Tuesday, October 30, 2012 at 11:17am by A

Crimanal jusice here is the rest of the story
At 12:00 p.m., on August 16, 2005, Robert Smith began his journey to freedom down the halls of the prison he called home for the last 2 years. Despite receiving a 5-year sentence, Robert was paroled for good behavior. His lawyer had tried repeatedly to appeal his sentence as ...
Sunday, February 17, 2008 at 8:19pm by lou

Mathh
A certain state taxes the first $400,000 in property value at a rate of 1%; all value over $400,000 is taxed at 1.75%. Find a piecewise-defined function T that specifies the total tax on a property valued at x dollars. (Simplify your answer completely.) 0.01x if 0<x<400,...
Tuesday, January 21, 2014 at 12:58am by A

Static Fricition
An object of mass 2k is placed on the edge of the floor of a merry go round of radius 4 meters. The coefficient of static friction is 0.4 for the floor and the object. 1.How much work (in joules) is done on the object by the static frictional force to get the object up to ...
Tuesday, March 13, 2012 at 7:55pm by Jarrett

Calculus
A company offers the following schedule of charges: $30 per thousand for orders of 50,000 or less with the charge per thousand decreased by 37.5 cents for each thousand above 50,000. Find the order which will make the company's receipts a maximum? How do you solve it?
Sunday, December 2, 2012 at 12:03pm by A company offers the following schedule of charges

stats
A company that manufactures and bottles apple juice has a machine that automatically fills 16-ounce bottles. There is some variation, however, in the exact amount of juice dispensed into each bottle. From a large number of observations taken over a long period of time, it was ...
Saturday, January 29, 2011 at 1:43pm by a

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