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April 23, 2014

Homework Help: Physical Education

Recent Physical Education Questions

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Physical Science
1. V = L*F = 0.01*5 = 0.05 m/s=50 mm/s. 4. Changes speed.
Saturday, June 8, 2013 at 8:44pm

Physical Science
1. A wave has a wavelength of 10 mm and a frequency of 5.0 hertz. What is its speed? A. 50 mm/s B. 50 hertz/s C. 2.0 mm/s D. 0.50 mm/s 2. Which type of mechanical wave needs a source of energy to produce it? A. a transverse wave B. a longitudinal wave C. a surface wave D. all ...
Thursday, June 6, 2013 at 8:07am

Physical Science
1A, 2B, 3B,D 4A, 5D, 6D, 7A, 8 ??? λ=v/f
Tuesday, June 4, 2013 at 5:22pm

Physical Science
1. To what is amplitude related? B. the maximum displacement from the rest position C. neither A nor B D. both A and B 2. Suppose two waves collide and the temporary combined wave that results is smaller than the original waves. What term best describes this interaction? A. ...
Tuesday, June 4, 2013 at 4:21pm

physical sciences
to find out whether the amount of heat(gas) produced will depend on an increase on the concetration of HCL when HCL reacts with an excess Zn
Tuesday, June 4, 2013 at 3:49pm

Physical Science
1C. at a particular instant. 2A. 4 meters 3B. how fast a velocity is changing at a specific instant 4D. all of the above 5A. the amount of time needed to travel the distance. 6D. The train’s acceleration is negative. 7D. by adding the vectors
Tuesday, June 4, 2013 at 3:29pm

physical sciences
to find out whether the amount of heat(gas)produced will depend on an increase on the concetration of HCL when HCL reacts with an excess Zn
Tuesday, June 4, 2013 at 3:28pm

Physical Science
1.Instantaneous speed is measured B. when the object reaches its destination. C. at a particular instant. D. over the duration of the trip. 2. A ball is rolled uphill a distance of 5 meters before it slows, stops, and begins to roll back. The ball rolls downhill 9 meters ...
Tuesday, June 4, 2013 at 1:27pm

life orientation
What are the 5 factors that contribute to the lack of physical fitness and poor nutrition in adolescent?
Monday, June 3, 2013 at 6:31am

CENCEPTS IN HEALTHCARE
what is the procedures and resources available for assisting patients who use English as a second language, who is hearing impaired, sight impaired, or who have any other type of physical or diversity related disposition that should be addressed to provide quality care to that...
Sunday, June 2, 2013 at 12:25pm

physical education (?)
Too much of anything can be bad for your health. How are you defining "too much"? Once you body becomes used to a certain level of exercise/training, then there should be no problem in gradually increasing the level.
Saturday, June 1, 2013 at 1:06pm

physical education
*sure
Friday, May 31, 2013 at 12:12pm

physical education
What nutritional supplement is recommended for helping the body handle stress? A. Zinc B. Iron C. Vitamin C D. No supplements are recommended for stress management I think its a but im not sue please help
Friday, May 31, 2013 at 12:08pm

physical education
is too much exersise and sports training without any rest good for health?
Friday, May 31, 2013 at 9:41am

physical geoprahy
Assume that a parcel of air is forced to rise up and over a 6000-foot high mountain (shown below). The Initial temperature of the parcel at sea level is 76.5 F, and the lifting condensation level (LCL) of the parcel is 3000 feet. The DAR is 5.5 F/1000' and the SAR is 3.3 F...
Tuesday, May 28, 2013 at 1:27pm

life orientation
Lack of physical fitness and proper nutrition in the adolescent
Sunday, May 26, 2013 at 9:45am

english
Doubles, here, is listed under Motifs, not Themes. Here's another lit website that has additional themes identified: http://www.enotes.com/wuthering-heights/​themes Love and Passion Passion, particularly unnatural passion, is a predominant theme of Wuthering Heights...
Saturday, May 25, 2013 at 11:02am

physics for physical science
134,33
Friday, May 24, 2013 at 5:24am

physical science
On a new temperature scale the steam point is 348 °X, and the ice point is 112 °X. What is the temperature on this scale that corresponds to 28.0 °C?
Thursday, May 23, 2013 at 5:54am

Psychology
When physical energy has resulted in a response in a sense organ, it is clear that: A. perception has taken place. B. the activation is the result of stimulus. C. the brain has interpreted the event. D. a single isolated sense is now perceiving the event. Answer:A
Wednesday, May 22, 2013 at 11:15am

physical science
ΔKE =Work mv₂²/2 - mv₁²/2 = W v₂= sqrt{(2/m)•[W+ mv₁²/2]}=…
Tuesday, May 21, 2013 at 11:36am

physical science
you do 16,000 j of work on a 45 kg box intitally going 11.8 m/s. How fast is it going now?
Monday, May 20, 2013 at 7:56pm

Psychology
When physical energy has resulted in a response in a sense organ, it is clear that: A. perception has taken place. B. the activation is the result of stimulus. C. the brain has interpreted the event. D. a single isolated sense is now perceiving the event.
Monday, May 20, 2013 at 4:09pm

Physical Chemistry
W=-nRT =-(1.6)(O.O82507)(65) =-8.53J
Sunday, May 19, 2013 at 7:10pm

TEACHER AIDE,CHILDREN, FAMILIES, SOCIETE
1. Larry is a very aggressive four-year-old child. He watches many television programs that contain violence. It’s most likely that A. he will become overactive. C. his behavior won’t change. B. he will become depressed. D. his behavior will become more aggressive. 2...
Saturday, May 18, 2013 at 5:00pm

Introduction of Psychology
When physical energy has resulted in a response in asense organ, it is clear that:
Saturday, May 18, 2013 at 10:38am

World History
1. The purpose of American and European imperialism in the Pacific was mainly to gain. A. markets fro manufactured products B. coaling stations and naval bases C. sources of raw materials D. places for surplus population I said C. 2. The development of antiseptics during the ...
Friday, May 17, 2013 at 3:39pm

physical science
how many kilojoules of heat must be transferred to a 480-g aluminum pizza pan to raise its temperature from 22c to 234c
Thursday, May 16, 2013 at 1:49pm

geometry!!!! PLEASE HELP!!!!
There are 300 students at a local high school. On "All Students Exercise Day", Sam, the Physical Education instructor, wants them to line up in a perfect rectangular formation (same number of students in each row). However, there must be more than 1 student in each ...
Thursday, May 16, 2013 at 11:01am

physical science
A force is used to raise a 50 kg crate through a height of 4m at a constant speed.how much gravitati
Tuesday, May 14, 2013 at 4:24pm

Justice system
Detectives more typically focus their energies on homicide and rape cases, as opposed to burglary and robbery cases, because: A. there is political pressure to do so. B. the victims can more often provide clues that make the cases easier to solve. C. insurance companies can ...
Tuesday, May 14, 2013 at 4:02pm

physical science
a=F/m = 14000/2500 =5.6 m/s^2
Tuesday, May 14, 2013 at 12:16pm

physical science
If the mass of a plane is 2,500 kg and the net force on it is 14,000 N, what is the plane's acceleration?
Tuesday, May 14, 2013 at 10:35am

Physical Education
(a) Calculate the average blood velocity in the major arties given that the aorta has a radius of 1.0 cm, the blood velocity is 30 cm/s in the aorta, and the total cross-sectional area of the major arties is 20 cm2 (b) What is the total flow rate? (c) On the assumption that ...
Monday, May 13, 2013 at 10:29pm

Physical Science
KE=mv²/2 m= ρV kinetic energy per unit volume V KE₁ =KE/V= mv²/2V =ρV•v²/2V = ρv²/2
Monday, May 13, 2013 at 6:13pm

oops--physical chemistry
I believe that is 15 atm for Ptotal and not 1.5.
Monday, May 13, 2013 at 5:28pm

physical chemistry
I would do this. Let x = fraction of gas that is NO2 The 1-x = fraction that is N2O4 molar mass NO2 = 46 molar mass N2O4 = 92 46(x) + (92(1-x) = 69 Solve for x and I get 0.5 which is the mole fraction of these gases. Then pNO2 = XNO2*Ptotal and pN2O4 = XN2O4*Ptotal Finally, Kp...
Monday, May 13, 2013 at 5:13pm

Physical Science
Blood is pumped from the heart at a rate of 5L/min into the aorta of radius 2.0cm. Assuming that the density of blood 1x103 kg/m3 .Determine the velocity of blood through the aorta
Monday, May 13, 2013 at 3:41pm

Physical Science
ratio of radii = √(ratio of areas) ratio of forces is inverse of ratio of areas
Monday, May 13, 2013 at 3:01pm

Physical Science
A dentist’s chair with a patient in it weight 2100N. The output plunger of a hydraulic system begins to lift the chair, when the dentist’s foot applies of 55N to the input piston. Neglect any height difference between the plunder and the piston. What is the ratio of ...
Monday, May 13, 2013 at 2:25pm

Physical Science
my dear , how did you get this formula of KE, KE=mv2/2 and the mass is equal to (rho)(volume ) so KE=(RHO)(VOLUME)(V2)/2 ,, I confused , can you explain more please
Monday, May 13, 2013 at 1:09pm

Physical Science
Thank you
Monday, May 13, 2013 at 12:54pm

Physical Science
KE=ρv²/2= 1•10³•0.5²/2=125 J
Monday, May 13, 2013 at 12:33pm

Physical Science
- What is the kinetic energy ,KE, per unit volume V of blood that has a speed of 0.5 m/s. Take density ofĉblood = 1.0x103kg/m3
Monday, May 13, 2013 at 12:27pm

Physical Education
mg=F(buoyant), ρ₁Vg=ρ₂0.64Vg, ρ₁=0.64ρ₂=0.64​9;806=515.84 kg/m³.
Monday, May 13, 2013 at 12:19pm

Physical Education
Thank you very much ^__^
Monday, May 13, 2013 at 12:06pm

Physical Education
rate (m^3/s) = speed (m/s) * area (m^2) = 0.35 * 2.0*10^-4 = 0.70 * 10^-4 = 7.0 * 10^-5 = .0000070 m^3/s 7.0*10^-5 = v * .28 v = 25 * 10^-5 = 2.5 * 10^-4 m/s
Monday, May 13, 2013 at 10:49am

Physical Education
Oh ,,I am sorry , I mean science
Monday, May 13, 2013 at 10:17am

Physical Education
math ..
Monday, May 13, 2013 at 10:14am

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...
Monday, May 13, 2013 at 9:56am

Physical Education
A solid object floats on ethyl alcohol, with 68.2%of the object’s volume submerged .Find the density of the object. Take density of alcohol =806 kg/m
Monday, May 13, 2013 at 9:12am

physical chemistry
The system N2O4 <--->2NO2 maintained in a closed vessel at 60º C & a pressure of 5 atm has an average (i.e. observed) molecular weight of 69, calculate Kp. At what pressure at the same temperature would the observed molecular weight be (230/3)
Sunday, May 12, 2013 at 11:41am

physical science
How to unscramble this word isarntucio
Saturday, May 11, 2013 at 11:58pm

physical
m=ρV=ρπr²h=1950•​;π•0.051²•0.003=0.04​8 kg
Friday, May 10, 2013 at 4:15pm

Psychology
Psychophysics studies the relation between physical stimuli and a person's sensations and/or perceptions.
Friday, May 10, 2013 at 3:14pm

physical what?
If you really want the help of an expert in this subject, you'll follow directions and put the FULL SUBJECT in the School Subject box.
Friday, May 10, 2013 at 10:09am

physical
A solid cylinder has a radius of 0.051 m and a height of 0.0030. The cylinder is composed of two different materials with mass densites of 1950 kg/m3. If each of the two materials occupies an equal volume, what is the mass of the cylinder?
Friday, May 10, 2013 at 10:03am

Psychology
When physical energy has resulted in a response in a sense organ, it is clear that: (Points: 5) perception has taken place. the activation is the result of stimulus. the brain has interpreted the event. a single isolated sense is now perceiving the event. I believe it is the ...
Friday, May 10, 2013 at 9:37am

scholarship essay
What makes me deserving of this scholarship is my dedication to succeed, my work ethic, and leadership skills. Throughout my years in school I have always been recognized as a person that loves to be the best. People all over the world have dreams that never come true. One ...
Thursday, May 9, 2013 at 10:23am

LIFE ORIENTATION
LACK OF PHYSICAL FITNESS AND PROPER NUTRITION IN ADOLESCENT.DESCRIBE THE LIFESTYLE DISEASE.MENTION 5 FACTORS THAT CONTRIBUTE TO THE DISEASE.
Thursday, May 9, 2013 at 5:05am

physical scinsce
F=1000n, F=ma, a=F/m=1000n/10= 100n. a=v²/2s, v²/2s=100n, n= v²/200s=50²/200•10=1.25. The amount of explosive is 1.25•10 =12.5 kg.
Thursday, May 9, 2013 at 3:55am

physical scinsce
A cannon that is 10m long is designed to launch a 10kg ball over a castle wall. In order to do this the ball must have a speed of at least 50m/s as it exits the cannon. For every 10kg of explosives used, the force on the ball in the cannon increases by 1000N. How many kg of ...
Thursday, May 9, 2013 at 1:26am

physical scinsce
A cannon that is 10m long is designed to launch a 10kg ball over a castle wall. In order to do this the ball must have a speed of at least 50m/s as it exits the cannon. For every 10kg of explosives used, the force on the ball in the cannon increases by 1000N. How many kg of ...
Thursday, May 9, 2013 at 1:25am

Psychology
When physical energy has resulted in a response in a sense organ, it is clear that: (Points: 5) perception has taken place. the activation is the result of stimulus. the brain has interpreted the event. a single isolated sense is now perceiving the event. I believe it is the ...
Wednesday, May 8, 2013 at 10:59pm

life orientation
describe the lack of physical fitness and 5 factors that contribute to the disease?
Wednesday, May 8, 2013 at 5:40pm

physical science
if the maximum amount of water vapor in the air at 15 degrees c is 12.5 g/m^3, what is the actual amount of water vapor in the air if the relative humidity is 85.0%
Wednesday, May 8, 2013 at 9:39am

Science
Please check my answers (at the bottom) with these questions. 1. An apple quickly changes color when exposed to air. This demonstrates a ________. (1 point) physical property chemical property physical change all of the above 2. When a chunk of dry ice is at room temperature, ...
Tuesday, May 7, 2013 at 12:22pm

Physical Science
Which screen?
Tuesday, May 7, 2013 at 12:04am

Health
WITH STARS IS MY ANSWER! (*) 1) A drug created by a chemical reaction in some foods, especially fruits and grains A= neurons B= cirrhosis C= alcohol ****** D= depressant 2) Being drunk A= intoxicated ****** B= withdrawal C= alcohol D= minor 3) Cells that make up the nervous ...
Monday, May 6, 2013 at 9:22pm

Physical Science
1. What is molarity of products? I can't decide if it's a. The concentration of the reactants measured in mol/L of solution or b. The concentration of the products measured in mol/L of solution 4. How does pressure relate to reaction rates? I'm stuck between a. ...
Monday, May 6, 2013 at 7:28pm

GRAMMAR
"Farther, farthest" usually is used when you are referring to physical distances ... miles, yards, inches, etc. "Further, furthest" usually is used when you are referring to abstract ideas, not physical distances.
Monday, May 6, 2013 at 6:11pm

Chemistry
For the following battery: Cd(s) | CdCl2(aq) || Cl–(aq) | Cl2(l) | C(s) (a) Write the reduction half-reaction occuring at the C(s) electrode. (Include physical states of reactants and products.) C(s) electrode:? (c) Calculate the mass of Cl2 consumed if the battery ...
Monday, May 6, 2013 at 5:48pm

Physical Science
1. What is molarity of products? I can't decide if it's a. The concentration of the reactants measured in mol/L of solution or b. The concentration of the products measured in mol/L of solution 4. How does pressure relate to reaction rates? I'm stuck between a. ...
Monday, May 6, 2013 at 12:35pm

Physical science
How much current flows in a 12-watt radio connected to a 120-volt circuit?
Sunday, May 5, 2013 at 2:37pm

physical science
How much current flows in a 12-watt radio connected to a 120-volt circuit?
Sunday, May 5, 2013 at 2:28pm

Physical Science
if a blue object is placed in front of the screen, what color will it be? explain the answer.
Sunday, May 5, 2013 at 1:51pm

Physical Science
force*time=mass*changevelocity
Sunday, May 5, 2013 at 1:36pm

Physical Science
A car of mass 900 kg moves at 10 m/s. What is the braking required to stop the car in a time of 5 seconds
Sunday, May 5, 2013 at 1:34pm

physical aspects
A 600 lb. oak packing crate is sitting on a cross grained, 14 ft long, oak ramp. The force of the box against the ramp is 520 lbs, and the downhill force on the box is 300 lbs. Will the box slide down the hill all by itself? Give the box a nudge, will it stop? If the box will ...
Sunday, May 5, 2013 at 8:21am

Physical Science
10. The more compact a metal is, the less brittle it becomes. -True? I'm confused about this one because of what the textbook says: "the more compact the atoms become, the harder the metal becomes. While the compactness makes the metal hard, a fracture on any boundary...
Thursday, May 2, 2013 at 8:24pm

Physical Science
10. The more compact a metal is, the less brittle it becomes. -True? I'm confused about this one because of what the textbook says: "the more compact the atoms become, the harder the metal becomes. While the compactness makes the metal hard, a fracture on any boundary...
Thursday, May 2, 2013 at 11:26am

Physical Science
The issue is what is meant by rust. In the real world, there are two iron oxides: FeO and Fe2O3 which are the common oxides for the two common valence forms of the iron molecule. In common rust, these two oxides and their hydroxides are present, almost half and half, along ...
Thursday, May 2, 2013 at 9:02am

Physical Science
To make 2 molecules of Fe2O3 "rust", six O atoms are needed, along with two iron atoms. That would require three water (H2O) molecules, if there were no other source of oxygen. Therefore the correct answer is False. http://en.wikipedia.org/wiki/Iron(III)_o​xide
Thursday, May 2, 2013 at 8:36am

Physical Science
6. In order to turn 2 iron atoms into rust, 2 water molecules must be present. -False?
Thursday, May 2, 2013 at 7:07am

physical science
A nail is driven into a board to a depth of 1.00 cm with one strike from the hammer. The hammer striking the nail hit it with a force of 200.00 Newtons. How much work was done?
Wednesday, May 1, 2013 at 6:29pm

life oreination
http://www.livestrong.com/article/291307​-lack-of-physical-fitness-proper-nutriti​on-in-adolescents/ http://www.livestrong.com/article/292056​-physical-fitness-and-proper-nutrition-i​n-the-adolescent/
Wednesday, May 1, 2013 at 11:33am

life oreination
5 factors that contribute to a lack of physical fitness and proper nutrition in the adolescent
Wednesday, May 1, 2013 at 9:53am

Speech
Analysing errors consumes time and money. In order to assure that the physical erosion processes are correctly identified both error analysis and standardisation of measuring techniques are necessary to limit uncertainty and to minimise misinterpretation For the last paragraph...
Wednesday, May 1, 2013 at 7:48am

Speech
Pretty good. Here are some things I'd change: In sentence 1, it's not clear what "it" is (right after "because") ... erosion or research. Remove "it" and put in the correct noun. In sentence 2, "They" and "thus" need to...
Wednesday, May 1, 2013 at 7:12am

Speech
Please rephrase the following sentences into a more simple manner. I need to give a presentation and i would like to write this out simpler. Thank you guys Research of soil erosion is difficult for several reasons, but particularly because soil erosion is an intermittent ...
Wednesday, May 1, 2013 at 6:16am

Physical science
A: increasing water temperature
Monday, April 29, 2013 at 4:38pm

physical science
If a sample emits 1000 counts per second when the detector is 1 meter from the sample, how many counts per second would be observed when the detector is 2 meters from the sample?
Monday, April 29, 2013 at 4:35pm

Science
1.A 2.A 3.C 4.C 5.D 6.B 7.D 8.C 9 Chemilcal I dont know if number ten is fully right but i hope it helps. 10. Color is classified as both physical and chemical properties. Color is a physical property because it is the visible light that the substance does not absorb. Color is...
Monday, April 29, 2013 at 3:21pm

LANGUAGE ARTS UGRENT!!!
1. What's the fastest way to find out how many individual letters are quoted in the article? A: Count the number of photos in the article. B: Read the article. C: Count the heads and subtract the first head. D: Count the number of footnotes. 2. Where should you insert a ...
Monday, April 29, 2013 at 2:20pm

life orientation
Descrise the Factors that contribute to lack of physical fitness and proper nutrition in the adolescent
Monday, April 29, 2013 at 1:58pm

physical science
http://www.webopedia.com/TERM/E/earth_st​ation.html
Monday, April 29, 2013 at 12:23pm

physical science
define earth station
Monday, April 29, 2013 at 11:46am

physics for physical science
2.232667747500
Sunday, April 28, 2013 at 7:12pm

History
Well I have been working on an essay for a couple days now about slavery, here it is: Slavery began in the 16th century, but ended in the 19th century. Slaves went through a lot of torture then, but some blacks now still deal with some of the problems the slaves had back then...
Sunday, April 28, 2013 at 4:31pm

Physical Science
#4
Sunday, April 28, 2013 at 1:45pm

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