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Search: The femur is a bone in the leg whose minium cross-sectional area is about 3.60 10-4 m2. A compressional force in excess of 6.90 104 N will fracture this bone

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help me physics
The femur is a bone in the leg whose minium cross-sectional area is about 3.60 E-4 m2. A compressional force in excess of 6.90 E4 N will fracture this bone. (a) Find the maximum stress that this bone can withstand. 1 N/m2 (b) What is the strain that exists under a maximum-...
November 16, 2010 by william

physics please help
The femur is a bone in the leg whose minimum cross-sectional area is about 3.60 10-4 m2. A compressional force in excess of 6.90 104 N will fracture this bone. (a) Find the maximum stress that this bone can withstand. (b) What is the strain that exists under a maximum-stress ...
November 14, 2010 by dan

Physics
A femur is a bone in the leg whose minimum cross sectional area is about 4.0 x 10^-4 m^2. A compressional force in excess of 6.8 x 10^4 N will fracture this bone. A.) Find the maximum stress that this bone can withstand and B.) What is the strain that exists under a maximum ...
February 23, 2013 by Lori

physics help
The femur is a bone in the leg whose minimum cross-sectional area is about 3.60 10-4 m2. A compressional force in excess of 6.90 104 N will fracture this bone. (a) Find the maximum stress that this bone can withstand. (b) What is the strain that exists under a maximum-stress ...
November 16, 2010 by yoni

Physics
A force compresses a bone by 0.10mm. A second bone has the same length but twice the cross-sectional area as the first. By how much would the same force compress the bone?
December 9, 2012 by Caroline

college physics
From what maximum height can a 61 kg person jump without breaking the lower leg bone of either leg? Ignore air resistance and assume the CM of the person moves a distance of 0.65 m from the standing to the seated position (that is, in breaking the fall). Assume the breaking ...
March 14, 2010 by Anonymous

physics help please!!!
From what maximum height can a 61 kg person jump without breaking the lower leg bone of either leg? Ignore air resistance and assume the CM of the person moves a distance of 0.65 m from the standing to the seated position (that is, in breaking the fall). Assume the breaking ...
March 14, 2010 by Anonymous

physics
If a compressive force of 3.2×104N is exerted on the end of a 16cm long bone of cross-sectional area 4.4cm2 , by how much does it shorten? Use Ebone=1.5×1010N/m2, tensile strength of bone = 1.3×108N/m2.
April 10, 2014 by hayley

Physic
A 89.0 kg person stands on one leg and 90% of the weight is supported by the upper leg connecting the knee and hip joint-the femur. Assuming the femur is 0.640 m long and has a radius of 1.90 cm, by how much is the bone compressed?
May 7, 2011 by Bret

Physics
Consider a human femur of length L = 469 mm. Model the bone as a hollow cylinder, with inner radius Ra = 4.17 mm and outer radius Rb = 12.51 mm. If a 74 kg person's weight is supported by one leg, calculate the stress on the femur; express as percentage of the UCS. Ignore the ...
October 24, 2012 by Anonymous

physic
Depending on how you fall, you can break a bone easily. The severity of the break depends on how much energy the bone absorbs in the accident, and to evaluate this let us treat the bone as an ideal spring. The maximum applied force of compression that one man’s thighbone can ...
January 20, 2014 by nada

Physics
Two dogs are pulling on opposite ends of a bone. One dog pulls to the right with a force of 50 N while the other pulls to the left with a force of 40 N. Are the forces on the bone balanced or unbalanced? How do you know? What is the net force on the bone? Would the bone's ...
November 28, 2010 by Jasper

biology
what kind of bone comprises the proximal epiphysis of the femur? spongy bone
September 21, 2006 by nina

help anatomy questions
10.what is the name of the inner portion of the kidney? calyx cortex hilum medulla 8. A fracture straight across the bone at a right angle to the bone's axis is called? oblique fracture spiral fracture stress fracture transverse fracture 3. The lymphatic mass found low in the ...
December 3, 2014 by g. rose

Anatomy
a) What is meant by the terms dermal (intramembranous) and endochondral with respect to bone? Give an example of each. b) With the aid of simple diagrams, describe the parts of a young (growing) bone, as typified by the femur. i am comfused with that
June 4, 2010 by George2

physics
When a large bone such as the femur is broken, the two pieces are often pulled out of alignment by the complicated combination of tension and compression forces that arise from the muscles and tendons in the leg (see the X­ray image in Figure P3.64A). To realign the bones and ...
September 11, 2011 by Anon14

Physics
Two dogs are pulling on opposite ends of a bone. One dog pulls to the right with a force of 50N while the other pulls to the left with a force of 40N. Are the forces balanced or unbalanced? How do you know? What is the net force on the bone? Would the bone's velocity change? Why?
March 7, 2011 by Rosie

Health
elderly individuals are more likely to break a bone when they fall because many of their bones have become weak due to holes in the spongy bone, which is realted to what condition? ossification osteoporosis scoliosis fracture
November 13, 2014 by Anonymous

Anatomy
A 27 year old woman suffers a fracture of her tibia. The fracture is severe enough that she needs immobilization of the bone as well as the joints both proximal and distal to the bone. How should the cast be applied? A. Across the elbow B. From above the elbow to below the ...
December 10, 2012 by Anonymous

physical education
are the anatomical names for the following right?: skull-cranium shoulder blade-clavicle spine-sternum collar bone-scapula thigh bone-femur fingers-phalanges can you please check if the names are correct
October 16, 2010 by chelsea

mechanics of materials
The following data was obtained from a tensile test of steel. The test specimen was 15mm in diameter and 50 mm in length. Load(kN)/elongation mm) 5 /0.005 10 /0.015 30 /0.048 50 /0.084 60 /0.102 64.5 /0.109 67 /0.119 68 /0.137 69 /0.16 70 /0.229 72 /0.3 76 /0.424 84 /0.668 92...
February 3, 2013 by dmkp

mechanics of materials
The following data was obtained from a tensile test of steel. The test specimen was 15mm in diameter and 50 mm in length. Load(kN)/elongation mm) 5 /0.005 10 /0.015 30 /0.048 50 /0.084 60 /0.102 64.5 /0.109 67 /0.119 68 /0.137 69 /0.16 70 /0.229 72 /0.3 76 /0.424 84 /0.668 92...
February 3, 2013 by dmkp

physics
The maximum applied force of compression that one man’s thighbone can endure without breaking is 7.6 x104 N. The minimum effective cross-sectional area of the bone is 3 x10-4 m2, its length is 0.54 m, and Young’s modulus is Y=9.4x109 N/m2. The mass of the man is 61 kg. He ...
November 12, 2012 by stressedstudent

Physics
When standing erect a person's weight is supported chiefly by the larger of the two leg bones. Assuming this bone to be a hollow cylinder of 2.5 cm internal diameter and 3.5 cm external diameter, what is the compressive stress on the bone (in each leg) in the case of a person ...
March 4, 2012 by Brittnieee.

Grammar
Proofread and insert the proper punctuation. The x-rays revealed: an articular fracture of the tibia, a butterfly fracture of the fibula, and a longitudinal fracture of the femur. Answer: The x-rays revealed an articular fracture of the tibia, a butterfly fracture of the ...
May 10, 2011 by Leslie

Applied Behavioral
Orlando and Inez never really exercise.. Research tells us that they are ast lower risk for 1. diabetes 2. mental impairment 3. bone fracture due to osteoporosis 4. none of these; they have a higher a risk of diabetes, mental imparment, and osteoporotic bone fractures
December 8, 2012 by Regina

Physics
A 77 kg sprinter is running the 100 m dash. At one instant, early in the race, his acceleration is 4.7 m/s^2. a) What total force does the track surface exert on the sprinter? Assume his acceleration is parallel to the ground. Give your answer as a magnitude. b) What total ...
July 27, 2013 by Anonymous

physics
In a traction setup for a broken bone, with pulleys and rope available, how might we be able to increase the force along the femur using the same weight?
October 8, 2014 by Mary

mechanical properties of materials
following data was obtained from a tensile test of steel. The test specimen was 15mm in diameter and 50 mm in length Load (kN) Elongation(mm) 5 0.005 10 0.015 30 o.048 50 0.084 60 0.102 64.5 0.109 67 0.119 68 0.137 69 0.160 70 0.229 72 0.300 76 0.424 84 0.668 92 0.965 100 1....
January 28, 2013 by dmkp

mechanical properties of materials
following data was obtained from a tensile test of steel. The test specimen was 15mm in diameter and 50 mm in length Load (kN) /Elongation(mm) 5 /0.005 10 /0.015 30 /0.048 50 /0.084 60 /0.102 64.5 /0.109 67/ 0.119 68 /0.137 69/ 0.160 70 /0.229 72 /0.300 76 /0.424 84 /0.668 92...
January 28, 2013 by dmkp

mechanical properties of materials
following data was obtained from a tensile test of steel. The test specimen was 15mm in diameter and 50 mm in length Load (kN) /Elongation(mm) 5 /0.005 10 /0.015 30 /0.048 50 /0.084 60 /0.102 64.5 /0.109 67/ 0.119 68 /0.137 69/ 0.160 70 /0.229 72 /0.300 76 /0.424 84 /0.668 92...
January 28, 2013 by dmkp

Physics
The Russell Traction System To immobilize a fractured femur (the thigh bone), doctors often utilize the Russell traction system illustrated in the figure. Notice that one force is applied directly to the knee, F_1,while two other forces, F_2 and F_3 are applied to the foot. ...
October 2, 2009 by Jenny

Animal Skeletal and Muscular Systems
Which of the following is an example of voluntary muscle activity? a. scratching b. movement of food down the intestine c. heart contractions d. movement of urine into the bladder Which of the following muscles are used when breathing? a. intercostal and pectoral b. ...
October 1, 2011 by Kelsi

Algebra
Archaeologists and forensic scientists use the length of of human bones to estimate the height of his/her femur f(the bone from the knee to the hip socket), in centimeters using the following formulas: Male h=69.089+2.238f Female: h = 61.412+2.317f a. a partial skeleton of a ...
March 10, 2012 by kim

Physical Education
Suppose that blood flows through the aorta with a speed of 0.35 m/s. The cross-sectional area of the aorta is 2.0x10-4 m2. (a) Find the volume flow rate of the blood (b) The aorta branches into tens of thousands of capillaries whose total cross-sectional area is about 0.28 m2...
May 13, 2013 by Janaiby

Radioactivity
A bone fragment has lost 75% of its original carbon-14. What is the age of the bone fragment? My answer is about 11 000 years but I don't know if its right
April 21, 2014 by Aditya

Anatomy & Physiology
Okay, heres one of those questions that isn't easily found in lab manuals and text books (atleast mine). ALSO, if you have a source, could you please show me? It might come down to me having to prove the teacher that i'm right, that is if you're right. There are 3 questions: 1...
February 23, 2009 by Akashic

physics
When you stand on your tiptoes, your feet pivot about your ankle. As shown in the figure, the forces on your foot are an upward force on your toes from the floor, a downward force on your ankle from the lower leg bone, and an upward force on the heel of your foot from your ...
November 25, 2012 by Cassie

Science
16g of bone displaced a volume of 8mL of water.what is the density of the bone?
August 24, 2011 by lala

calculus
If a bone is found to have 20% of its normal amount of carbon 14, how old is the bone?
December 9, 2012 by Jenn

calculus
If a bone is found to have 20% of its normal amount of carbon 14, how old is the bone?
December 9, 2012 by Jenn

anatomy
What differences can be seen between compact bone and spongy bone by the naked eye?
October 13, 2009 by christian

Fluid Mechanics
In a hydraulic system a 20.0-N force is applied to the small piston with cross sectional area 25.0 cm2. What weight can be lifted by the large piston with cross sectional area 50.0 cm2?
October 29, 2014 by Justin

physics
(a) Find the magnitude of the total force of the traction apparatus applied to the leg, assuming è = 31°, the weight of the leg is 21 N and the weight hanging from the traction apparatus, m, is also 21 N. 1 N (b) What is the horizontal component of the traction force acting on...
June 6, 2011 by Anonymous

Math
Forensic scientists use the lengths of certain bones to calculate the height of person. A bone often used is the tibia (t), the bone from the ankle to the knee. A man’s height (h) is determined from the length of this bone using a function defined by the following formula: h(t...
February 28, 2014 by Silvio

Hydraulic Physics
In a hydraulic system a 20.0-N force is applied to the small piston with cross sectional area 25.0 cm2. What weight can be lifted by the large piston with cross sectional area 50.0 cm2? Would I need to divide both pistons areas then mutiply the force? and or have gravity in ...
October 29, 2014 by Justin

Science
Which of the following explains why a bone in a bird’s wing is homologous to a bone in a lizard’s front leg? a.The bones in the two species provide for the same type of motion. b.The bones in the two species are both vestigial structures. c.The two species were exposed to the ...
November 10, 2013 by Anonymous

Evolution
Which of the following explains why a bone in a bird’s wing is homologous to a bone in a lizard’s front leg? a.The bones in the two species provide for the same type of motion. b.The bones in the two species are both vestigial structures. c.The two species were exposed to the ...
November 10, 2013 by Anonymous

Science
In which way does the circulatory system rely on the skeletal system? Glucose is secreted by compact bone as an energy source for blood. Spongy bone stores minerals needed by blood cells. Bones provide a source of oxygen to blood. Blood cells are produced in bone marrow.
May 6, 2014 by Anonymous

science 1 question
In which way does the circulatory system rely on the skeletal system? A. Glucose is secreted by compact bone as an energy source for blood. B. Spongy bone stores minerals needed by blood cells. C. Bones provide a source of oxygen to blood. D. Blood cells are produced in bone ...
February 3, 2015 by SkatingDJ

Anatomy & Physiology
For my class, I need a to make a human bone such as a femur or any other bones in the human body. Any suggestions on a website?
March 17, 2014 by Gabby

maths help
Hi MY question is if a cylinder has a volume of 72cm cubed and a cross-sectional area of 18cm squared. Work out the height of the cylinder Can someone show me how we do it by the steps The volume of a cylinder is given by volume = (cross-sectional area) x height so height = ...
April 23, 2007 by Ali

11 ms sue
What is bone strengthening? A. Activities that produce a force on the bones that promote bone growth and strength B. Activities that produce greater elasticity of joints C. Activities that heal injuries and diseases associated with the bones D. None of the above a
March 4, 2012 by desha

Health
What is bone strengthening? A. Activities that produce a force on the bones that promote bone growth and strength B. Activities that produce greater elasticity of joints C. Activities that heal injuries and diseases associated with the bones D. None of the above I need help ...
September 13, 2012 by Mary

biology
In humans, dietary calcium helps maintain strong bones and teeth. Calcium is absorbed into the blood stream by the cells that line the small intestine. Bone cells called osteoblasts absorb calcium from the blood and use it to form the mineralized part of bone called bone ...
September 6, 2007 by Jen

Chemistry
A skull fragment found in 1936 at Baldwin Hills, California, was dated by 14C analysis. Approximately 100g of bone was cleaned and treated with 1 M HCl(aq) to destroy the mineral content of the bone. The bone protein was then collected, dried and pyrolyzed. The CO2 produced ...
May 21, 2009 by Sarah

bio Anatomy
What is the difference between bone matrix (compact) and intercellular matrix (in spongy bone)? Thanks
March 7, 2012 by rebekah

Bio Anatomy
What is the difference between bone matrix (compact) and intercellular matrix (in spongy bone)? Thanks
March 7, 2012 by rebekah

Biology
The half life of carbon 14 is 5700 years. If the carbon 14 level measured in a fossilized bone has only 1/4 of the original amount, how old in the bone?
May 16, 2011 by Jennifer

PHYS101
For a system,the cylinder on the left,at L,has a mass of 600kg and a cross-sectional area of 800centi meter squad.The piston on the right,at S,has cross-sectional area 25centi meter squad abd negligible weight.If the apparatus is filled with oil(DENSITY=0.78grams/centi meter ...
April 19, 2010 by KABELO

Math
A bone is found to have 45% of the original amount of carbon 14. If the half life of carbon is 5600 years, how old is the bone. Would I use the formula N=No e^kt?
November 20, 2010 by Hannah

college physics
Please help! the below questions are driving me crazy. Thanks Larry King 1) Suppose that in a certain atmospheric situation, a falling raindrop, having an initial mass of 0.010g. collects smaller droplets by collision at such a rate that, after 10s, it has a mass of 0.020g g ...
February 5, 2009 by Larry King

physics
A merry-go-round is stationary. A dog is running on the ground just outside its circumference, moving with a constant angular speed of 0.705 rad/s. The dog does not change his pace when he sees what he has been looking for: a bone resting on the merry-go-round one third of a ...
March 1, 2011 by Anonymous

anatomy
For my anatomy class, I need a to make a human bone such as a femur or any other bones in the human body. Any suggestions on a website?
March 17, 2014 by Vicky

physics
a wire whose cross-sectional area is 4mm^2 is stretched by 0.1 mm by a certain load.if a similar wire double the area of cross-section is under the same load,then then elongation would be ans: 1)0.05mm
February 4, 2013 by kala

physics
When subjected to a force of compression, the length of a bone (compression Young's modulus 9.4 x 109 N/m2, tensile Young's modulus 1.6 x 1010 N/m2) decreases by 1.5 x 10-5 m. When this same bone is subjected to a tensile force of the same magnitude, by how much does it stretch?
April 25, 2014 by Elle

Physics
When subjected to a force of compression, the length of a bone (compression Young's modulus 9.4 x 109 N/m2, tensile Young's modulus 1.6 x 1010 N/m2) decreases by 1.5 x 10-5 m. When this same bone is subjected to a tensile force of the same magnitude, by how much does it stretch?
April 25, 2014 by Elle

college Physics
Dear Sir, Please help. I am struggling with the below problems for a very long time. thanks Larry King 1) Suppose that in a certain atmospheric situation, a falling raindrop, having an initial mass of 0.010g. collects smaller droplets by collision at such a rate that, after ...
February 5, 2009 by Larry King

physics
A venturi meter is a device for measuring the speed of a fluid within a pipe. The drawing shows a gas flowing at a speed v2 through a horizontal section of pipe whose cross-sectional area A2 = 0.0600 m2. The gas has a density of ñ = 1.30 kg/m3. The Venturi meter has a cross-...
December 4, 2010 by student

physics
A venturi meter is a device for measuring the speed of a fluid within a pipe. The drawing shows a gas flowing at a speed v2 through a horizontal section of pipe whose cross-sectional area A2 = 0.0900 m2. The gas has a density of ñ = 1.50 kg/m3. The Venturi meter has a cross-...
December 6, 2010 by johnny

Cross-Sectional Area
The cross-sectional area of a beam cut from a log with radius 1 foot is given by the function A(x) = 4x(sqrt{1 - x^2}), where x represents the length of half the base of the beam. Determine the cross-sectional area of the beam if the length of half the base of the beam is 1/3 ...
February 22, 2008 by John

mechanics of materials
A steel bar with a cross sectional area of 25cm2 is found to shear fracture when subjected to a tensile load of 400kN. calculate the limiting shear stress of the bar.
January 28, 2013 by dmkp

mechanics of materials
A steel bar with a cross sectional area of 25cm2 is found to shear fracture when subjected to a tensile load of 400kN. calculate the limiting shear stress of the bar.
January 28, 2013 by dmkp

College Physics
As part of an exercise program, a 75 kg person does toe raises in which he raises his entire body weight on the ball of one foot. The Achilles tendon pulls straight upward on the heel bone of his foot. This tendon is 25 cm long and has a cross sectional area of 78 mm^2 and a ...
October 26, 2007 by Jen

physics
Bird bones have air pockets in them to reduce their weight–this also gives them an average density significantly less than that of the bones of other animals. Suppose an ornithologist weighs a bird bone in air and in water and finds its mass is 43.0 g and its apparent mass ...
April 10, 2014 by Paige

physics
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters. What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift system in order to lift...
June 9, 2012 by LL

Physics
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters.  What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift system in order to lift...
June 9, 2012 by LL

Physics
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters.  What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift system in order to lift...
June 9, 2012 by LL

Physics
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters.  What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift system in order to lift...
June 9, 2012 by LL

Physics
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters.  What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift system in order to lift...
June 10, 2012 by LL

Chem
The age of a bone was to be determined by 14C dating. 14C has a half-life of 5,730 years, and a Geiger counter shows that the 14C in living tissue gives 15.2 cpm g-1 of carbon. If the same Geiger counter shows that the 14C in a sample of the bone gives 3.8 cpm g-1 of carbon, ...
August 28, 2013 by Mike

Physics. Please help!
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters.  What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift system in order to lift...
June 10, 2012 by LL

physics
Water flows steadily from an open tank into a pipe. The elevation of the top of the tank is 10.2 m, and the elevation at the pipe is 3.90 m. The initial cross-sectional area of the pipe is 6.40×10^−2 m; and at where the water is discharged from the pipe, it is 2.30×10^&#...
November 30, 2009 by AE

health
A man is shot in the head, and the bullet stops just outside the dura nater. What is the innermost layer that the bullet has penetrated? A. Skin B. Bone C. fat D. Periosteum I think it is BONE from what I have seen in the diagram
December 3, 2010 by betty

Physics
A total charge of 16ìC passes through a cross-sectional area of a nichrome wire in 4 s. How many electrons pass through the cross-sectional area in 16 s? This has to do with Electric current and so i know that means 16ìC = 16 x 10^-6 = 1.6x10^-5.
January 19, 2013 by Struggling Student

Physics
Two wires have the same length and the same resistance but are made up of different materials. The resistivities of these materials are 3.97 Ù and 1.97 Ù. Obtain the ratio of the smaller cross-sectional area to the greater cross-sectional area.
June 13, 2012 by Beth

anatomy and physiology
Bone mineral density scans are required to detect early signs of osteoporosis because normal x-rays don't detect it until what percent of bone density is gone?
October 31, 2010 by Stacie

Physics
In a machine shop, a hydraulic lift is used to raise heavy equipment for repairs. The sys- tem has a small piston with a cross-sectional area of 0.063 m2 and a large piston with a cross-sectional area of 0.172 m2. An engine weighing 2800 N rests on the large piston. What force...
June 28, 2013 by M&M

physical
Water flow along horizanta pipe at cross sectional area 48cm which has a constriction at cross sectional area 12cm at one place if the speed at the water at the constriction point is 4m/s calculate the speep at the wide section
September 22, 2013 by Anonymous

physics
A net charge of 47 mC passes through the cross-sectional area of a wire in 19.0 s. (a) What is the current in the wire? 1 A (b) How many electrons pass the cross-sectional area in 1.0 min? 2 . electrons I got 9.3e+22 for B but its wrong
May 16, 2012 by Brianna

Physics
Which one of the following stresses would be most likely to cause a bone to fracture? A) tensile stress B) compressive stress C) sheer stress D) bulk stress
November 7, 2012 by Dan

Anatomy
Bone mineral density scans are required to detect early signs of osteoporosis because normal x-rays don't detect it until ____ percent of bone density is gone. A. 20 B. 30 C. 50 D. 80 I am thinking it is 30%.
December 10, 2012 by Anonymous

physics
A liquid (ρ = 1.65 g/cm^3) flows through two horizontal sections of tubing joined end to end. In the first section the cross-sectional area is 10.0 cm^2, the flow speed is 245 cm/s, and the pressure is 1.20 105 Pa. In the second section the cross-sectional area is 2.50 cm...
February 6, 2013 by dave

phys
Water flows steadily from an open tank into a pipe as shown in the figure. The elevation of the top of the tank is 12.3 m, and the elevation at the pipe is 3.80 m. The initial cross-sectional area of the pipe (at point 2) is 5.60×10−2 m^2; and at where the water is ...
December 9, 2009 by ami

Physics
As a swimmer pulls his arm through the water, various muscles exert forces on the upper arm. The figure below shows a force F exerted on the humerus (upper arm bone) by the pectoral muscle. The muscle is connected to the bone d = 7.00 cm from the center point O of the shoulder...
November 8, 2012 by Pat

Biology
external features of the rat (rattus norvegicus) What is the function of the diastema? In the female rat , is the vulva always open??? Are the testes always present in the scrotal sacs? is there a bone in the !@#$%^&? if yes wat is this bone called?
March 14, 2011 by Davia

physics
A net charge of 47 mC passes through the cross-sectional area of a wire in 19.0 s. (a) What is the current in the wire? 1 A (b) How many electrons pass the cross-sectional area in 1.0 min? 2 electrons
May 11, 2012 by Alice

physics
A net charge of 47 mC passes through the cross-sectional area of a wire in 19.0 s. (a) What is the current in the wire? 1 A (b) How many electrons pass the cross-sectional area in 1.0 min? 2 electrons
May 14, 2012 by Amelia

physics A
A net charge of 47 mC passes through the cross-sectional area of a wire in 19.0 s. (a) What is the current in the wire? 1 A (b) How many electrons pass the cross-sectional area in 1.0 min? 2 . electrons
May 16, 2012 by confused

physics
Spending a long time in weightlessness is unhealthy. One of the most important negative effects experienced by astronauts is a loss of muscle and bone mass. Since an ordinary scale won’t work for an astronaut in orbit, what is a possible way of monitoring this change in mass...
November 20, 2010 by john

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