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August 29, 2014

Search: physics: BOB or DRWLS follow up question

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physics: BOB or DRWLS follow up question
What average force is required to stop an 1100-kg car in 8.0 s if it is traveling at 95 km/h? i understand what you both did, but why can't you use the V = Vo + at equation and solve for acceleration there and use that in the EF = ma equation?
November 21, 2007 by beckii

DrBob222 please check
DrBob222 please check my physics question posted at 8:55pm. The subject is drwl please check. I am not getting a response from drwl. Thanks! Mary DrWLS is not on right now. My physics is too poor to trust my answers. Bob Pursley is smarter than I am; he does physics, math, and...
February 27, 2007 by Mary

math
Posted by mota THE MASS OF THE SUN IS ABOUT 10^27 METRIC TONS , OR 10^30 KILOGRAMS . HOW MANY KILOGRAMS ARE IN ONE METRIC TON ? ----------------------- math - drwls 1000. ----------------------- explain please i want to understand this question :) this is my question i posted ...
March 2, 2008 by mota

Bob Pursley
Bob: Thank you for answering my Chemistry question. I apologize that it was on there twice. I accidentally posted again the same question instead of a different question. You answered the first question with precision. Thank you
October 9, 2011 by Mom

physics: drwls
drwls for the question below, the answer seems to be wrong: The four tires of an automobile are inflated to a gauge pressure of 1.8 multiplied by 105 Pa. Each tire has an area of 0.025 m2 in contact with the ground. Determine the weight of the automobile. It asks for the ...
July 22, 2008 by Elisa

physics - last question
Sam is sitting in her fishing boat watching a trout swim below the surface. She guesses the apparent depth of the trout at 2.0m. She estimates that her eyes are about 1.0 m above the water's surface, and that the angle at which she's observing the trout is 45 degrees. b) ...
January 16, 2010 by Sarah N H

physiology
Study guide question...please help Bob attends a party. a few hours before the party, Bob ate beans and cabbage. His best friend made a funny joke and Bob finds it funny and his abdominal muscles begin to contract forcefully as he laughs. Physiologically, what happens next to ...
December 10, 2006 by csumicro

question
two friends bob and ralph, ate at a restarunt together. bob paid for himself and ralph paid for himself. Bob spend 3 dollars more than ralph. the total bill was 52.24 dollars how much did bob pay?
August 22, 2014 by anonymous

drwls & Damon - maths
hey guys, i follow you up to the point of intergrating the final line. How would I intergrate [x^-2.e^-x] dx thx
December 29, 2007 by xX_Supaman_Xx

physics - another question
Sam is sitting in her fishing boat watching a trout swim below the surface. She guesses the apparent depth of the trout at 2.0m. She estimates that her eyes are about 1.0 m above the water's surface, and that the angle at which she's observing the trout is 45 degrees. b) ...
January 16, 2010 by Sarah N H

physics
Good job "Drwls", your answer to my bowling ball question worked. Way to go!
March 17, 2010 by norm

math
Posted by mota on Saturday, March 1, 2008 at 3:34am. THE MASS OF THE SUN IS ABOUT 10^27 METRIC TONS , OR 10^30 KILOGRAMS . HOW MANY KILOGRAMS ARE IN ONE METRIC TON ? ----------------------------- math - drwls 1000. ----------------------------- explain please i want to ...
March 2, 2008 by mota

Gen Chem II
Thanks for the information Dr. Bob. Would you be able to work it out so that I can actually see the steps with the numbers and follow from there. The question was on Vitamin K from Sunday at 2:44pm which you answered at 3:45pm. Thanks again. I am looking to get a tutor since I...
February 11, 2013 by Nefret

Dr BOB 222
Thanque mr bob for answering my question.......
June 19, 2008 by PULKIT

AlgebrAlgebra-Mathmate or BobPursley or Reiny
I had asked a question earlier and bob pursley nicely answered it but I do have a question concerning it still- perhaps someone could clarify it- f(x) = logx is a logarthmic function. Bob Pursley said it could be because the base is implied but my question is the way it is ...
December 14, 2010 by Anna

follow up(for Count Iblis)
i have a follow up question for a previous post How do you know 2B is (20 "+" B) and not (2 "x" B) _______________________________________ to me this question does not make sense... it comes from a review packet for the SAT _______________________________________ Q: If 299 is ...
August 31, 2007 by manny

physics-bobpursley/drwls please check
bobpursley/ drwls please help me with my post on Sunday, April 15 at 10:16pm and 10:19pm. Thanks!
April 16, 2007 by Mary

Physics
The pendulum bobs in the figure are made of soft clay so that they stick together after impact. The mass of bob B is 14 times that of bob A. Bob B is initially at rest. If bob A is released from a height h above its lowest point, what is the maximum height attained by bobs A ...
March 17, 2012 by Angelina

physics
Bob can swim at a rate of 5km/h. He is in a river that is flowing at a rate of 9 km/h. a) if bob swims upstream, what is his relative velocity to the ground? b)if bob swims downstream, what is his relative velocity to the ground? c) Someone decides to help Bob out of the water...
March 19, 2012 by Jake

Physics
A 2.1 kg pendulum bob hangs from a 2 meter string. It is pulled to the side, position A, so that the bob is 79 cm (h on the sketch) above the lowest position, position C. The bob is released and begins to swing. See below.
December 7, 2013 by JAYZ

physics
A frictionless pendulum is made with a bob of mass 19.7 kg. The bob is held at height = 0.934 meter above the bottom of its trajectory, and then pushed forward with an initial speed of 2.93 m/s. What amount of mechanical energy does the bob have when it reaches the bottom?
May 2, 2012 by Anonymous

PHYSICS
Fig. 6-48 shows a conical pendulum, in which the bob (the small object at the lower end of the cord) moves in a horizontal circle at constant speed. (The cord sweeps out a cone as the bob rotates.) The bob has a mass of 0.038 kg, the string has length L = 1.2 m and negligible ...
March 1, 2008 by greg

physics
A 2.1 kg pendulum bob hangs from a 2 meter string. It is pulled to the side, position A, so that the bob is 125 cm (h on the sketch) above the lowest position, position C. The bob is released and begins to swing. How fast is it moving at that point?
December 4, 2013 by Jen

HIT
Dr. Bob's computerized records have been compromised by a hacker, resulting in damages to patients. Which of the following is most true? A. Dr. Bob may be liable if he didn't have proper firewall or other protections. B. Dr. Bob won't be liable. C. Dr. Bob will be liable. D. ...
February 27, 2009 by Sharon

physics
i know how to do it, i keep getting the wrong answer!! a bob of mass 4.00 kg is suspended from a fixed point by a massless string of length 1.50 m. The bob moves in a horizontal circle with the string always making an angle theta=22 from the vertical. what is the speed of the ...
October 10, 2007 by julia

physics
The figure below shows a "conical pendulum", in which the bob (the small object at the lower end of the cord) moves in a horizontal circle at constant speed. (The cord sweeps out a cone as the bob rotates.) The bob has a mass of 0.035 kg, the string has length L = 0.90 m and ...
December 11, 2008 by johnny

physics
Figure 6-43 shows a "conical pendulum", in which the bob (the small object at the lower end of the cord) moves in a horizontal circle at constant speed. (The cord sweeps out a cone as the bob rotates.) The bob has a mass of 0.060 kg, the string has length L = 0.90 m and ...
December 5, 2010 by :)

Physics
A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 1.5 m/s. The acceleration of gravity is 9.81 m/s 2 . What is the initial height of the bob? Answer in units of m
February 5, 2013 by Ted

introductory to physics
A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 4.0 m/s. The acceleration of gravity is 9.81 m/s 2 . What is the initial height of the bob? Answer in units of m
March 4, 2014 by alicia

physics
A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 3.2 m/s. The acceleration of gravity is 9.81 m/s 2. What is the initial height of the bob?
February 11, 2011 by jay

math help
did anybody answer my question drwls answered your geometry question.
October 3, 2006 by jessica =]

Confidentiality of Health information
Dr. Bob's computerized records have been compromised by a hacker, resulting in damages to patients. Which of the following is most true? A. Dr. Bob may be liable if he didn't have proper firewall or other protections. B. Dr. Bob won't be liable. C. Dr. Bob will be liable. D. ...
April 25, 2010 by b

Confidentiality of health information
Dr. Bob's computerized records have been compromised by a hacker, resulting in damages to patients. Which of the following is most true? A. Dr. Bob may be liable if he didn't have proper firewall or other protections. B. Dr. Bob won't be liable. C. Dr. Bob will be liable. D. ...
April 28, 2010 by Anonymous

confidentiality of health information
Dr. Bob's computerized records have been compromised by a hacker, resulting in damages to patients. Which of the following is most true? A. Dr. Bob may be liable if he didn't have proper firewall or other protections. B. Dr. Bob won't be liable. C. Dr. Bob will be liable. D. ...
April 29, 2010 by Anonymous

physics
¬Calculate the period of oscillation of a simple pendulum of length 1.8 m, with a bob of mass 2.2 kg. What assumption is made in this calculation? (g = 9.8 m s - 2) If the bob of this pendulum is pulled aside a horizontal distance of 20cm and released, what will be the values ...
May 18, 2013 by Anonymous

health
Dr Bob's computerized records are damaged by a power surge,Which of the following is true? a) Dr Bob is not at fault b)Dr bob is at fault c)The records custodian, but not dr bob will be liable d)dr bob is at fault unless he had proper surge protection devices in place
September 18, 2010 by Anonymous

Dr.Bob - about your post to a previous question
For that question by Josh on the second page I reviewed what you did and am confused to how you found the g excess reagent (NH3) I posted a response to what I found when I helped Josh with the problem. Could you please take a look at it and check my thinking on the problem ...
August 24, 2007 by ~christina~

Physics
A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 1.9m/s. What is the initial height of the bob?
December 4, 2012 by Enno

HEY DRWLS!! I have a question
You're a genius, so can you please help me with my advanced algebra question. I posted it down below!! Thanks:) Miley
January 29, 2008 by Miley

music yr 8- re- drwls
thankyou drwls for your help on buddy holly
September 22, 2008 by astra

physics
A certain pendulum with a 1.00 kg bob has a period of 3.50 s. What will happen to the period of the pendulum if the 1.00 kg bob is replaced by a bob with a mass of 2.00 kg? Explain your answer.
September 12, 2013 by Anonymous

Quantum Physics
Alice and Bob share a state a|++> + b|-->, where the first qubit is Alice's and the second qubit is Bob's. Alice measures her qubit in the standard basis and sends the measurement outcome to Bob. If Bob wants his qubit in a|+> + b|->, what gate does he apply in the...
February 24, 2013 by qwerty

Chemistry
Dr.Bob, this is regarding to the enthalpy posts.... I don't understand why you just switch it to negative??How do you know that it is neg???? I thought it started out neg though the problem does not give the number.... I am sorry,but I am a very slow learner...thank you for ...
November 15, 2013 by Anonymous

Chem. To Dr. Bob from Earlier Question or anyone
Dr. Bob, earlier you gave me the equation H2SO4 + NaHCO3 -> H2O + CO2 + Na2CO3 to balance. However, the S is not in the products, so it can't be balanced.
November 30, 2009 by CMM

physics
Suppose we have Bob the astronaut sitting without a space suit in a spaceship full of air on a mission to Mars. Bob is very fond of balloons and is holding on to a nice, big, red helium balloon via a piece of string. Bob is sitting facing the front of the spaceship. Mission ...
May 11, 2012 by Kay

Physics based Calculus
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher, and knows that the fastest he can ...
September 27, 2012 by Brianna

Health info
please check my answer thanks :) Mr. Jones, angry at Dr. Bob , throws a punch at him but misses. Dr Bob sues for battery. why will Dr Bob lose? 1.There was no physical contact 2. Dr Bob was not harmed I picked #1 no physical contact
November 14, 2007 by Anonymous

physics
Bob is driving 25 m/s and he turns a corner with a radius of 37 m. How much is Bob accelerating?
February 28, 2013 by Anonymous

Physics check
A speeder traveling at 41 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 3.3 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder? Im sorry I am new to physics this is my first year and...
July 13, 2010 by Me

Dr Bob 222
I love you Dr Bob, you are great. I didn't realise how much it was getting me down. Don't like to give up on something, my text books don't make it very easy to follow through a problem. Understand it perfectly now, I feel so much better now. Thank you very much. One more ...
February 19, 2007 by SOS mature student

Physics
A pendulum bob with a mass of 0.4 kg is released from a position in which the bob is 20 cm above the low point in its swing. What’s the speed of the bob as it passes through the low point in its swing?
March 2, 2014 by Jennifer

Anatomy and Physiology
Mr. Jones, angry at Dr. Bob, throws a punch at him but misses. Dr. Bob sue for battery. Why will Dr. Bob lose?
January 20, 2011 by stacie

Physics
A 3.3 kg pendulum bob hangs from a 2 meter string. It is pulled to the side, position A, so that the bob is 103 cm (h on the sketch) above the lowest position, position C. The bob is released and begins to swing. a) What is its potential energy after it has swung to position B...
March 12, 2014 by Monica

to bobpursley
My classmates friends want me to post their questions as well.Thats why there are multiple names is there a problem. Yes. You are posting duplicate or even triplicate questions. That is silly. If we have answered one, the answers to the others follow. People here are ...
November 3, 2006 by minemine

Math-Stat
Jane and Bob are on the same game show. They answer one question, either True or False. The probability that Bob is correct is 70%. The probability that Jane is correct is also 70%. Moreover, the probability that Bob is correct given Jane is either correct or incorrect is ...
January 29, 2013 by Mohamed

Physics
The Bob of a simple pendulm oscillates with an amplitude of 0.02m and a period of 0.5s, calculate the speed of the bob through the equilibrium position?. Please help
January 22, 2011 by Ochuko

physics
a pendulum consists of a wooden bob of mass m and length l. A Bullet of mass m1 is fired towards the pendulum with a speed v1.the bullet emerges out of the bob with a speed v1/3 and the bob just completes motion along a vertical line ,then v1 is?
April 11, 2012 by srikala

ATTN: DRWLS RE: PHYSICS
pete and john play a game of tug f war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2 a)what's the magnitude of the force that peter exerts on john? b)what's the ...
January 23, 2010 by samir

physics
i posted this question before however i did not understand drwls explanation. anybody else want to try ? Sam tosses a ball horizontally off a footbridge at 3.1 m/s. How much time passes after he releases it until its speed doubles?
December 21, 2010 by tj

physics
Believe it or not, a plumb-bob does not hang exactly along a line directed to the centre of the Earth! Determine how far off true plumb a bob hangs in Cape Town. In which direction is the deviation (north, east, south, or west)? How would your answer differ for a plumb-bob in ...
April 21, 2011 by joseph

Physics to drwls question to answer given earlier
A 0.700-kg ball is on the end of a rope that is 0.90 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 70.0° with respect to the vertical as shown. What is the ...
February 17, 2012 by Angelina

Physics
Bob and Bob Jr. stand at open doorways at opposite ends of an airplane hangar 25 m long. Anna owns a spaceship, 40 m long as it sits on the runway. Anna takes off in her spaceship, then swoops through the hangar at constant velocity. At precisely time zero on both Bob's clock ...
January 29, 2013 by Katie

College Physics
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher, and knows that the fastest he can ...
September 18, 2011 by Nikki

For George
At 11:37 and at 12:24 you posted the same question the earlier one was answered correctly by drwls by accepting your question the way you typed it. my solution is based on the assumption that your denominator was e^(t-7), an invalid assumption.
September 11, 2008 by Reiny

physics
DRWLS: PLEASE SEE ADDITIONAL INFO AT THE BOTTOM its the second part of the question that I don't understand: according the graph shown, the net force acting on an object varies wth the object's displacement. Calculate the work down by the force on the object at the various ...
January 30, 2010 by Sarah N H

math
Bob sets two alarm clocks (battery-powered) to be sure he arises for his Monday 8:00 A.M. accounting exam. There is a 75 percent chance that either clock will wake Bob. (a) What is the probability that Bob will oversleep? (b) If Bob had three clocks, would he have a 99 percent...
January 8, 2012 by James

Health Information
Dr. Bob's computerized records are damaged by a power surge. Which of the following is most true? A. Dr bob isn't at fault. B. Dr Bob is at fault. C. The records custodian, but not Dr bob will be liable. D. Dr Bob is at fault unless he had proper surge protection devices in ...
October 11, 2010 by Denise

bus math 12
Challenge Problem: Bob is closing a real estate transaction on a farm in Yocona, Mississippi, for $385,900. His mortgage holder requires a 25% down payment and he also must pay $60.00 to record the deed, $100 in attormey's fees for document preparation, and $350 for an ...
April 5, 2010 by Heather

physics
Question Part Points Submissions Used 1 2 3 3/3 0/2 0/5 3/10 1/10 1/10 Total 3/10 Consider a conical pendulum with a 90.0 kg bob on a 10.0 m wire making an angle of θ = 3.00° with the vertical. (Consider + to be towards the center of the circular path.) (a) Determine the ...
October 22, 2011 by carlton

Physics-Just a clarification
I have a question? What does hf = hi+Vivertical stand for? I haven't seen hf or hi or Vivertical yet in class-I just started a few weeks ago. Bob Pursley answered a question but I don't know what the abbreviations mean. Thank you for the direction-
October 6, 2010 by LynAnne

Due 2morrow
Some students pass around a box of candy containing 25 pieces.Kendra took the first piece of candy. Each child takes a piece of candy as the box is passed around. Bob also gets the last piece and may have more than the first piece. How many children are seated around the table...
January 25, 2007 by Melthea

Physics-Dr. Bob cannyou look at my work-I'm still
had this question last night for Dr. Bob-A fox sees a piece of carrion thrown from a nest 14 m high and goes to get it. Carrion is thrown 1.5 horizontal velocity. Fox is 7. m from base of tree. What is mgnitude of fox's average velocity if it grabscarrion just as it touches ...
September 23, 2010 by Joelle

Math
Bob can swim at a rate of 5km/h. He is in a river that is flowing at a rate of 9 km/h. a) if bob swims upstream, what is his relative velocity to the ground? b)if bob swims downstream, what is his relative velocity to the ground? c) Someone decides to help Bob out of the water...
March 19, 2012 by Jake

Calculus and vectors
Bob can swim at a rate of 5km/h. He is in a river that is flowing at a rate of 9 km/h. a) if bob swims upstream, what is his relative velocity to the ground? b)if bob swims downstream, what is his relative velocity to the ground? c) Someone decides to help Bob out of the water...
March 20, 2012 by Jake

Physics
Two 0.09g pith balls are suspended from the same point by threads 40cm long. (Pith is a light insulating material once used to make helmets worn in tropical climates.) When the balls are given equal charges, they come to rest 19 cm apart What is the magnitude of the charge on ...
January 25, 2010 by Lanise

physics 100
Bob, who has a mass of 60 , can throw a 800 rock with a speed of 26 . The distance through which his hand moves as he accelerates the rock forward from rest until he releases it is 1.0 . a) What constant force must Bob exert on the rock to throw it with this speed? b)If Bob is...
October 13, 2012 by Bob

physics
a simple pendulum of length 0.2m has bob of mass 5gm, it is pulled aside through an angle 60 degrees from the vertical. a spherical body of mass 2.5gm is placed at the lowest position of the bob. when the bob is released it strikes the spherical body and comes to rest.what is ...
April 11, 2012 by srikala

Physics
Alice and Bob share a state a|++⟩+b|−−⟩, where the first qubit is Alice's and the second qubit is Bob's. Alice measures her qubit in the standard basis and sends the measurement outcome to Bob. If Bob wants a|+⟩+b|−⟩, what gate ...
February 24, 2013 by unknown

Biology
Please help !!!! two bacteria, "Claire" and "Bob" are infected with a virus. Claire explodes several hours later and Bob lives happily ever after.... until one day when Bob feels stressed out and all the sudden, explodes as well. What happened to bacteria "Claire" and "Bob" ...
December 2, 2010 by Ashley

physics
Bob..thank you very much for taking time with my question but I still don't seem to get it. the book answers are a=672 N.m b=14.1 KW to re-iterate the problem...a shaft rotating @ 800 rpm delivers a torque of 240 N.m to an Output Shaft that is rotating @ 200 rev/min. a. if the...
April 3, 2011 by Jeannine

physics
A 0.34 kg pendulum bob is attached to a string 1.2 m long. What is the change in the gravitational potential energy of the system as the bob swings from point A to point B, where θ = 37°?
December 6, 2009 by John

physics
Bob can throw a 540 g rock with a speed of 26 m/s. He moves his hand forward 0.8 m while doing so. What is Bob's maximum power output as he throws the rock?
November 25, 2012 by meg

physics
Bob can throw a 540 g rock with a speed of 26 m/s. He moves his hand forward 0.8 m while doing so. What is Bob's maximum power output as he throws the rock?
November 25, 2012 by meg

Site not working correctly/Physics
I posted a question a couple of days ago which was answered by DRWLS - thank you. Unfortunately I am unable to read the guidance provided as the typing is obscured by the adverts down the right hand side of the page. Look forward to replies. Thanks Mike
December 7, 2011 by Mike

Quantum Physics
Suppose Alice starts with two qubits in the Bell state 1/√2 (|00> + |11>) and teleports these qubits to Bob by applying the quantum teleportation protocol to each qubit separately. (a) What is the state of the two qubits received by Bob? |00> = |01> = |10>...
March 3, 2013 by qwerty

HEALTH
Dr bob's computerized records have been compromised by a virus, resulting in damages to patients. Which of the following is most true? a) Dr bob will not be liable. b) dr bob will be liable. c) dr bob won't be liable if the virus was introduced by someone outside office d) dr ...
September 19, 2010 by Ab

Physics (Bob please read)
hey bob, this question average force of friction thanks a lot. i only don't get one part. Now, set the potential energy of the rubber band (stretched x cm) equal to the work done on friction why is this equal to work done by friction? how come we can't use velocity, ...
June 12, 2007 by James

Quantum Physics
Alice and Bob share a state a| + +> + b |- -> , where the first qubit is Alice's and the second qubit is Bob's. Alice measures her qubit in the standard basis and sends the measurement outcome to Bob. If Bob wants his qubit to end up in the state a |0> + b |1>, ...
March 12, 2013 by JAY

Quantum Physics
Alice and Bob share a state a| + +> + b |- -> , where the first qubit is Alice's and the second qubit is Bob's. Alice measures her qubit in the standard basis and sends the measurement outcome to Bob. If Bob wants his qubit to end up in the state a |0> + b |1>, ...
March 12, 2013 by JAY

math
write the hidden question or questions in the problem Billy Bob wins $500 in a school raffle. He decides to keep $120 for himself, give $60 to charity, and divide the rest equally among his 5 brothers & sisters. How much will each brother zor sister Recieve from billy bob?
January 28, 2013 by Joe

statistics
Bob is a salesman. He receives $20 for each sales plus a fixed salary of $100 per week. Bob's average weekly sales is 70 units with a standard deviation of 15. Bob works 45 weeks a year.
September 18, 2011 by tuyet

Health Law
please check my answer thannks :) Dr Bob is on the staff at Patient hospital ,Inc he commits malpractice the plaintiff sues both the hospital and Dr Bob Assuming no fault on the part of the hospital which is the most complete and true.. 1. the hospital is liable 2. both Dr Bob...
November 14, 2007 by Anonymous

Informed Consent
I was wondering If someone could please look this over for me I need to answer the question below Dr. Bob is preparing to operate on Sally for an immediately life threatening condition. Just before he begings the operation, he discovers that she is 17 years old. Her parents, ...
April 24, 2008 by Anonymous

Dr.Bob can you check out the question down the pg
I posted a question yesterday. I was hoping to catch you before you left on your getaway. =D
March 9, 2008 by ~christina~

PHY: To AJAYB, follow up on previous response
First, I'd like to thank you for your response to my question. However, I had some follow up questions on your response from Saturday, July 28, 2012 at 8:27am. If you could take a look at that post and get back to me, it would be greatly appreciated.
July 29, 2012 by Dan

Q. Research
3. Bob takes an online IQ test and finds that his IQ according to the test is 134. Assuming that the mean IQ is 100, the standard deviation is 15, and the distribution of IQ scores is normal, what proportion of the population would score higher than Bob? Lower than Bob?
December 9, 2012 by Maurice

physics
thank you for your help drwls
January 27, 2008 by Charles

physics
Bob and Bob Jr. stand at open doorways at opposite ends of an airplane hangar 25 m long. Anna owns a spaceship, 40 m long as it sits on the runway. Anna takes off in her spaceship, then swoops through the hangar at constant velocity. At precisely time zero on both Bob's clock ...
January 30, 2013 by Katie

Physics
1. What evidence did ancient Greek astronomers have that Earth does NOT move? The answer is because of the lack of parallax, but then there's a follow-up question... 2. How do we knoew it DOES?
May 3, 2009 by Sally

Physics
What causes the restoring force in a simple pendulum? A. friction between the thread and the support B. the force exerted on the pendulum bob while displacing it from the mean position C. the component of the weight of the bob acting perpendicular to the thread D. the ...
May 25, 2010 by Rachel

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