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April 18, 2014

Homework Help: Physical Education

Recent Physical Education Questions

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psychology
Which of the following statements about psychological experiments is MOST accurate? A. The purpose of a single-blind experiment is to guarantee that neither the participants nor the experimenter influence the results. B.The participant's expectations about an experiment ...
Monday, April 7, 2014 at 9:39pm

physical science
Yes.
Monday, April 7, 2014 at 4:49pm

Physical Science
0.25kcal/kg-C
Monday, April 7, 2014 at 12:35pm

PHI 208 Week 3 Reading Quiz
Question 1. 1. It is unfair to criticize the profit-making purpose of business because: (Points : 1) it is in the nature of corporations and in the definition for their existence to form as a means to organize human effort more efficiently in order to maximize profits. as Adam...
Sunday, April 6, 2014 at 8:21pm

Physical Science
An virtual image is an image that is formed not by the intersection of two light beams, but it appears that these light beams intersect at some point. The optics of convex mirror doesn't allow the light beams to intersect at any position of object in relation to the mirror...
Sunday, April 6, 2014 at 6:38pm

Physical Science
13. Why can convex mirrors only produce virtual images? Sadly, I can't find this answer in my book. :( Any help would be appreciated, please and thank you!
Sunday, April 6, 2014 at 6:27pm

physical science
Provide three statements that demonstrate the importance of units when describing motion.
Saturday, April 5, 2014 at 6:09am

physical science
nope, you are spot on using mass, however, close together makes gravity force much greater.
Friday, April 4, 2014 at 8:37pm

physical science
Which of the following pairs of objects would have the strongest gravitational pull? two buildings in the same city ← two tall buildings in different cities two stars very far away from each other two stars very close to each other my answer is c
Friday, April 4, 2014 at 8:29pm

physical science
would 2 stars very far away from each other have a strong gravitational pull
Friday, April 4, 2014 at 5:26pm

physical science
is an elevator slowing down as it reaches the top floor a change in velocity?
Friday, April 4, 2014 at 5:17pm

physical science
a model train moving at a constant speed around a circular track has a constant velocity?
Friday, April 4, 2014 at 8:56am

Physical science
k Q1 Q2 / d^2 1) if d2 = 3 d 1 then 1/d^2^2 = 1/(3d1)^2 = (1/9) 1/d1^2 2) k Q1 (2 Q2)/d^2 = twice original
Friday, April 4, 2014 at 7:27am

Physical science
1) how does the electric force between two oposite charges changes when the distance between the charges is tripled? 2)how does the electric force between two oposite charges changes when the amount of one charge is doubled?
Friday, April 4, 2014 at 12:32am

physical science
If You Were Riding A Train List Some Examples Of Items That Would Make It Seem Like You Weren't Moving
Thursday, April 3, 2014 at 11:18pm

Science
Physical properties used to indicate temperature changes include all of the following except a. color changes of liquid crystals b. volume changes of fluids and solids c. changes in electrical resistance d. odor changes in solids
Thursday, April 3, 2014 at 9:27pm

physical science
To keep UV rays from damaging the skin and eyes.
Thursday, April 3, 2014 at 4:26pm

physical science
Ozone absorbs most of the UV light from the sun; thus, ozone effectively blocks the UV-B rays from striking the earth.
Thursday, April 3, 2014 at 4:25pm

science
1.   Which is most likely to be part of an ionic bond?  (1 point) an atom with no valence electrons an atom with one valence electron an atom with two valence electrons an atom with three valence electrons 2.   To form an oxygen molecule (O2), two...
Thursday, April 3, 2014 at 11:28am

Maths please someone help me out!!!
.2^(t/4) multiplies by 0.2 every time t increases by 4. That's how the efficiency is described in words. so, get out your calculator (online or physical) and evaluate some values for t. As a sanity check, 50% is a little more than twice as much as 20%, so expect t to be ...
Thursday, April 3, 2014 at 10:53am

physical science
what is the importance of ozone in the stratosphere for your health?what will happen to us when ozone depletion becomes more serious?
Thursday, April 3, 2014 at 5:22am

physical science
why it is necessary to apply sunscreen to your skin and wear sunglasses when you want sunbathe on the beach?
Thursday, April 3, 2014 at 5:18am

Astronomy
Another star cluster ("star cluster 2") lies 7.4 Mega-parsecs from the starship, and has an apparent radius of 6.3 arc seconds. You would like to know how big it is. Is it the same size as galaxies in our universe (i.e. tens of kilo-parsecs) or only as big as a star ...
Wednesday, April 2, 2014 at 10:25am

world geography
Are these your choices? a climate b cultural c physical d political I'll be glad to check your answer.
Tuesday, April 1, 2014 at 7:55pm

Physical Science 9
what sequence of process must happen for an atom of carbon to go from a man to a car?
Monday, March 31, 2014 at 10:27pm

physical science
IDK
Monday, March 31, 2014 at 6:56pm

chemistry
Freezing and melting are two different physical changes that involve the same amount of energy. In an exothermic reaction, the amount of energy in the reactants is higher than the resulting amount of energy in the products. This means that the line graph starts at a higher ...
Monday, March 31, 2014 at 4:28pm

chemistry
Freezing and Melting are two different physical changes that involve the same amount of energy. compare and contrast the potential energy diagrams that would represent each of these processes. Be specific in your comparison.
Monday, March 31, 2014 at 3:40pm

physical science
How many kilocalories of heat does the operation of a 1285 W hair dryer produce each second?
Monday, March 31, 2014 at 2:50pm

science
1.   Use the diagram to answer question 1. description: particles have enough energy to break free from each other and can move around freely; particles spread out in different directions  sketch: What kind of substance is described?  (1 point) solid ...
Monday, March 31, 2014 at 2:24pm

Physical Sciences
Type Mach 2 into Google and get back 681 m/s Ac = v^2/r = (681)^2/5800 = 80 m/s^2 80/9.81 = 8.15 g
Monday, March 31, 2014 at 11:50am

Physical Sciences
As a fighter pilot makes a tight turn (with his head toward the centre of curvature), the blood drains from his head, leading to loss of brain function. Once the radial acceleration reaches about 4g, the pilot’s vision switches to black and white and narrows to “...
Monday, March 31, 2014 at 11:45am

health
Thirty minutes of physical activity a day can improve your family and can help to bring you closer together Answer Are True False Thank You
Sunday, March 30, 2014 at 9:13pm

Physical Science 9
Incomplete combustion ---> carbon particles and CO instead of CO2 That is not a good question by the way. You should know that for sure. The other things happen in: plants stomachs compost heaps and coffins not power plants
Sunday, March 30, 2014 at 8:15pm

Physical Science 9
what part of the carbon process is responsible for the release of carbon at a p[power plant combustion photosynthesis digestion decomposition my answer is a combustion
Sunday, March 30, 2014 at 7:56pm

Chemisty
When the oxide of generic metal M is heated at 25.0 °C, only a negligible amount of M is produced. MO2(s)<-->M(s)+O2(g) DeltaS= 287.5 kJ/mol When this reaction is coupled to the conversion of graphite to carbon dioxide, it becomes spontaneous. What is the chemical ...
Sunday, March 30, 2014 at 7:07pm

Criminal law
1. An investigator conducting a crime scene search at the scene of a violent crime has certain responsibilities and procedures to follow related to evidence collection. Of the following steps, which one is not required of the on-scene investigator? A. Recognize or discover ...
Friday, March 28, 2014 at 9:47am

health
Cosmetic surgery is more likely to lead to disappointment if a person is ________. A. Seeking surgery with the hope of influencing a change in oneself B. Seeking surgery with the hope of influencing a change in someone else C. Seeking surgery with the hope of influencing a ...
Thursday, March 27, 2014 at 9:56pm

Physical Science 9
It was highly influential to the world of science and it forever changed the way that we look at atoms. Without this research we would basically be in the dark and clueless but thanks to him we have a better understanding of the atomic model today.
Thursday, March 27, 2014 at 7:58pm

Physical science
See Related Questions: Wed,9-25-13,3:20 PM.
Thursday, March 27, 2014 at 4:41pm

Physical science
An astronaut on a space walk bumps the shuttle and starts moving away at a velocity of 0.02m/s. The astronaut's mass is 100kg. He takes a 1kg "safety weight" and shoves it away in exactly the direction of his motion at a speed of 6m/s. at what speed does the ...
Wednesday, March 26, 2014 at 7:40pm

Health and Physical
I agree with all of your answers except for # 5.
Wednesday, March 26, 2014 at 3:23pm

Health and Physical
6. Winston’s baseball team had the bases loaded in the last inning when his friend Freddie watched three straight pitches go by without swinging and was called out on strikes to end the game. How can Winston demonstrate responsible behavior in this situation? Ask the ...
Wednesday, March 26, 2014 at 3:00pm

Health and Physical
You're welcome, Cindy.
Wednesday, March 26, 2014 at 2:26pm

PHYSICAL SCIENCE
An object has a length of 5.0 cm, a height of 3.0 cm and a width of 15.0 cm. It has a mass of 24 grams. What is its density?
Wednesday, March 26, 2014 at 2:23pm

Health and Physical
I agree with your first four answers. I don't know about 5. Be sure to check your book.
Wednesday, March 26, 2014 at 1:49pm

Check Answers-Health and Physical-

Wednesday, March 26, 2014 at 1:47pm

Health and Physical
1. Melody enjoys playing team sports, such as baseball and soccer. Which organization would provide her the best opportunity to participate in these activities? Parks and recreation center********* Private school A local gym A faith based organization 2. Abner participates on ...
Wednesday, March 26, 2014 at 1:44pm

Physical science
A man loads 1000 sacks of flour into a truck in 30.0 minutes. Each sack has a mass of 20.0kg and the man must lift each sack 1.00m from a cart up onto the truck bed. how much power did the man develop?
Wednesday, March 26, 2014 at 12:57am

Mathematics lit, physical science, life science. Geography and englsh ,sepedi and l.o
What career do you want?
Tuesday, March 25, 2014 at 3:40pm

Mathematics lit, physical science, life science. Geography and englsh ,sepedi and l.o
What career m i qualify for it ?and where? And hw much m i g0ing to earn?? N how long it wil take me to learn??
Tuesday, March 25, 2014 at 3:38pm

physical Science
6,451 calories
Tuesday, March 25, 2014 at 12:03pm

math
Jayden wants to be a fast runner like his big brother, Isaac. Isaac encourages Jayden to do a “30 for 30” challenge. This would require Jayden to spend 30 minutes outside every day for 30 days doing some type of physical activity. In return, Isaac promises to do ...
Monday, March 24, 2014 at 8:41am

Chemistry
When the oxide of generic metal M is heated at 25.0 °C, only a negligible amount of M is produced. O2M(s) ----> M(s) +O2(g) Delta G^o = 290.3 kJ/mol When this reaction is coupled to the conversion of graphite to carbon dioxide, it becomes spontaneous. What is the ...
Sunday, March 23, 2014 at 3:10pm

Physical Science
P = V*I = 110 * 15
Thursday, March 20, 2014 at 6:54pm

Physical Science
(60 W•24hours •30 days)/1000=43.2 kW•h 43.2•0.1$=4.32$
Thursday, March 20, 2014 at 6:09pm

Language Art (Please Check)
1.C But mama told me never mind.She said i didnt need a bracelet to remember laurie,just as i didnt need anything to remember pap or our home in berkeley or all the people and things we loved and had left behind What is the main idea of this passage? A. When you lose something...
Thursday, March 20, 2014 at 3:13pm

Physical Science
A 60 W light bulb at 120 V is left on in your house to prevent burglary, and the power charges 10 cents per kilowatt-hour, how much will it cost to leave the bulb on for 30 days?
Thursday, March 20, 2014 at 2:40pm

physical
Sanchez Mr Potato? Q
Thursday, March 20, 2014 at 2:32pm

Science HELP!
water no longer exists, and different physical properties are evident. Chemical change.
Thursday, March 20, 2014 at 1:30pm

Science HELP!
when an electric current passes through water during the process of electrolysis, 2 gases are formed. one gas has a boiling point of -183 C and the other gas has a boiling point of -253 C. Has a physical or chemical change occured? Explain.
Thursday, March 20, 2014 at 12:44pm

physical sciences
B. Both are bonded covalently.
Wednesday, March 19, 2014 at 3:32pm

Physical Science
The current in a toaster oven is 15 A when plugged into an electrical outlet that is 110 V. How much electric power is used by the toaster oven? Formula: P = IV
Wednesday, March 19, 2014 at 8:26am

Physical Science
well, if you buy into the fact that red+green+blue = white then the complement of any secondary color is the unused primary color.
Wednesday, March 19, 2014 at 6:00am

Physical Science
When mixing colors of light, why does combining a secondary color with its complementary color give white light? I can't find the answer in my book, please help!
Wednesday, March 19, 2014 at 2:48am

physical science
Suppose you are camping in the mountains and you need to melt 1.8 kg of snow at 0.0 degC to 70.0 degC. The specific heat of water is 4186 j/kg*C while the latent heat of fusion for water equals 3.34 x 10^5 J/kg. How much heat will be needed? Express in KJ.
Tuesday, March 18, 2014 at 10:30pm

Physical Science
You are correct, a closed system is a system (anything is a system) that is almost completely closed off from its surroundings, note I said ALMOST. Nothing is completely closed off. So what is a closed off system? It is a system that lets nothing come in and nothing come out. ...
Tuesday, March 18, 2014 at 8:20pm

language arts -
Need to confirm if the verbs in the sentences are physical or mental actions: 1..Owens strong performance angered Adolf Hitler - Physical
Monday, March 17, 2014 at 8:37pm

Physical Science 9
what type of bond is a metal cation likely to form?
Monday, March 17, 2014 at 8:29pm

language arts -
Need to confirm if the verbs in the sentences are physical or mental actions: 1. Other Americans in the Olympics challenged their opponents, too. --physics 2. Wilma dazzled the crowds in the track & field competition. --physical 3. Al Oerter, an American discus thrower, ...
Monday, March 17, 2014 at 8:25pm

Physical Science 9
how did chadwicks discovery of nutrons change the atomic model
Monday, March 17, 2014 at 8:16pm

Physical Science 9
In an ionoic bond how many valence electrons would an atom have?
Monday, March 17, 2014 at 8:03pm

language arts
Need to confirm if the verbs in the sentences are physical or mental actions: 1. Other Americans in the Olympics challenged their opponents, too. Mental 2. Wilma dazzled the crowds in the track & field competition. physical 3. Al Oerter, an American discus thrower, dominated ...
Monday, March 17, 2014 at 7:16pm

language arts
Need to confirm if the verbs in the sentences are physical or mental actions: 1. However he won only 2 medals --Physical 2. Spitz also teamed with three other Americans in 3 relay races - Physical 3. In total, Spitz won s7 gold medals in a single Olympics---physical 4. That ...
Monday, March 17, 2014 at 6:56pm

physical science
Period = 1/f = (1/5.3)10^-14 seconds distance = speed * time lambda = 3*10^8 m/s * (1/5.3)* 10^-14 = .566 * 10^-6 meters = 566 * 10^-9 meters 10^-9 meters is nanometers, usually used for visible light wavelength
Monday, March 17, 2014 at 4:59pm

physical science
Green light has a frequency of about 5.3Hz~10Green light has a frequency of about 5.3Hz~ 10^{14}. Using the relationship speed of light (c)=fƒÉ find its wavelength in air.
Monday, March 17, 2014 at 4:17pm

Physical Science
This is the trouble with OTEC (Offshore Thermal Energy Conversion) where the difference in temperature between deep ocean water and water at the surface (in tropics of course) can be used to run a turbine system and generate electricity or whatever. However the efficiency is ...
Monday, March 17, 2014 at 2:06pm

Physical Science
heat in = SH * m * delta T SH = heat in / ( m* delta T)
Monday, March 17, 2014 at 1:38pm

Physical Science
go boom !
Monday, March 17, 2014 at 1:36pm

Physical Science
heat out = specific heat of water * mass of water * (30-0)
Monday, March 17, 2014 at 1:36pm

Physical Science
Heat out = Specific heat of ice * mass of ice * change in temp
Monday, March 17, 2014 at 1:34pm

Physical Science
P V = n R T well, R does not change :) R = P V/(nT) = P' .5V /(.5n 2T) = P'(.5)V/(nT) so .5 P' = P P' = 2 P
Monday, March 17, 2014 at 1:33pm

Physical Science
greater than Carnot cycle 1 - (Tcold/Thot) T in KELVIN (dge C + 273)
Monday, March 17, 2014 at 1:30pm

Physical Science
if you mix hot and cold water and get warm water the entropy is higher, even if the energy did not change. The availability of that energy is what changed. Between a glass of hot water and a glass of cold water you can run an engine. However there is not much you can do with a...
Monday, March 17, 2014 at 1:28pm

Physical Science
increase
Monday, March 17, 2014 at 1:23pm

Physical Science
The entropy of an isolated system always do what when natural processes occur?
Monday, March 17, 2014 at 12:34pm

Physical Science
The second law of thermodynamics forbids a heat engine to have thermal efficiency of what?
Monday, March 17, 2014 at 12:34pm

Physical Science
A sample of gas has its number of molecules halved, its Kelvin temperature doubled, and its volume halved. What is the new pressure, relative to the original pressure?
Monday, March 17, 2014 at 12:33pm

Physical Science
On a winter day the temperature drops from –5°C to –15°C overnight. If a pan sitting outside contains 0.49 kg of ice, how much heat is removed from the ice for this temperature change?
Monday, March 17, 2014 at 12:32pm

Physical Science
An ice tray with 175 g of water at 30°C is placed in a freezer at –9°C. How much energy must be removed from the water to lower its temperature to the freezing point?
Monday, March 17, 2014 at 12:32pm

Physical Science
If the volume and the number of molecules remain constant for a gas, a temperature increase causes the pressure to do what?
Monday, March 17, 2014 at 12:31pm

Physical Science
When 8 kcal of heat is added to 2.4 kg of a substance, its temperature increases 23 C°. What is the specific heat of the substance?
Monday, March 17, 2014 at 12:30pm

Science
Some animals, but not humans, have an organ called a gizzard located near the top of their digestive tract. This organ is small and can contain small rocks. It also has thick, muscular walls. Based on this physical description, which of the following is most likely to be the ...
Sunday, March 16, 2014 at 11:25pm

Science
Different from what? Each different substance has distinct chemical and physical properties.
Sunday, March 16, 2014 at 8:07pm

Physical Science 9
Add water, run the filtrate thru a filter, leaving iron, and sand, and wood. use a magnet to take away the iron. physically pick out the wood chips, leaving the sand. Now, evaporate the salt water, leaving salt.
Sunday, March 16, 2014 at 4:56pm

Physical Science 9
2 H2O ----> 2 H2 + O2 That is a reaction in the outer valence electron shells so despite being a physicist, I call it chemical.
Sunday, March 16, 2014 at 3:48pm

Physical Science 9
when an electric current is passed through water 2 gasses are formed is this a chemical or physical change
Sunday, March 16, 2014 at 3:44pm

Physical Science 9
How would you separate a mixture of iron fillings , salt, sand, and wood chips
Sunday, March 16, 2014 at 3:06pm

Physical Science 9
mass heat in = specific heat * mass * temperature rise
Sunday, March 16, 2014 at 2:59pm

Physical Science 9
a compound
Sunday, March 16, 2014 at 2:58pm

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