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September 18, 2014

Homework Help: Physical Education

Recent Physical Education Questions

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Physical sciences
The ruler now make contact with the neutral sphere.what happens to electrons?
Sunday, April 20, 2014 at 3:21am

physical
You are playing a note that has a fundamental frequency of 440.00 Hz on a guitar string of length 59.1 cm. At the same time, your friend plays a fundamental note on an open organ pipe, and 4.0 beats per seconds are heard. The mass per unit length of the string is 1.93 g/m. ...
Friday, April 18, 2014 at 6:26pm

Physical sciences
A factory siren emits a sound at 900hz.what frequency will be heard by the driver of a car traveling at 100km.h away from the factory?
Wednesday, April 16, 2014 at 12:39pm

Science
Both carbon dioxide and water are pure substances. How are they similar to each other? A.) both substances have a set ratio of atoms that cannot be separated by physical means. B.) both substances have a set ratio of atoms that can be separated by physical means. C.) both ...
Tuesday, April 15, 2014 at 9:11pm

English: tragedy
Paraphrase this line by line: I don't understand this.. In tragedy, man is a paradox in a paradoxical existence. Fallible and vulnerable in his mortal finity, he is yet capable of transcendent greatness. Freely exercising his will (a passive hero is pathetic rather than ...
Tuesday, April 15, 2014 at 8:53pm

Health
What are some ways to adjust your exercise and nutritional plan due to age, pregnancy, and physical capabilities?
Tuesday, April 15, 2014 at 11:11am

Health
What are four nutritional an physical exercise goals?
Monday, April 14, 2014 at 5:37pm

physical science
a ship is 850 m from a vertical cllff the ship sireN IS SOUNDED AN ECHO IS HEARD AFTER 5 SECOND CALCULATE THE SPEED OF THE SOUND FROM THE SIREN OF THE SHIP
Sunday, April 13, 2014 at 4:44pm

U.S. History
Read this passage by Booker T.Washington: I am in favor of every measure that will give to woman, the opportunity to develop to the highest possible extent, her moral, intellectual, and physical nature so that she may make her life as useful to herself and to others as it is ...
Saturday, April 12, 2014 at 7:53pm

Food and Nutrition
Children's Parties The stage 'children (ages 4-12 years) Relationship between nutritional needs and: - physical challenges -emotional challenges -social challenges THESE RELATIONSHIPS REGARDING CHILDREN AT PARTIES AND FOOD.... i just need some points..
Friday, April 11, 2014 at 7:10pm

World Civilization
1. In 1789, the National Assembly revoked the privileges of the aristocracy. This occurred in reaction to A. a peasant uprising. B. Louis XVI's withdrawal of troops from Paris. C. discontent among the poor people of Paris. D. the storming of the Bastille 2. What was ...
Friday, April 11, 2014 at 5:14pm

Food and Nutrition
Physical, emotional and social challenges meeting needs for life stage children ages (4-12 years) for the following points : -- lunches -- children's parties Can i just get some points to make my presentation? pls help me if u can :)
Wednesday, April 9, 2014 at 6:48pm

Physical sciences
A 330kg crate slides down a 30 degree inclined plane. The total length of the plane is 3,6m. The crate is kept from accelerating by a man who is pushing back on it parallel to the incline. Calculate the force exerted by the man on the piano
Wednesday, April 9, 2014 at 6:49am

chemistry
I want to make sure I am correct in classifying whether the following properties of hydrogen are chemical or physical. thanks 1. hydrogen will burN in in oxygen to form water. CHEMICAL 2. hydrogen does not support combustion. CHEMICAL 3.hydrogen is usually found combined with ...
Tuesday, April 8, 2014 at 8:45pm

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

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
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
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
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

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

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

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
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
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
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
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
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
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 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

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

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

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 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
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

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
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
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

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
when exposed to the same amount of heat for the same amount of time, a 3 g sample of copper will experience a greater temperature change then a 12 g sample of copper due to its smaller what?
Sunday, March 16, 2014 at 2:45pm

Physical Science 9
a substance made of two or more elements chemically combined in a set ratio or proportion is called what
Sunday, March 16, 2014 at 2:41pm

Physical Science 9
the contents of a can of air freshener are gaseous when sprayed but remain a liquid in the can due to what?
Sunday, March 16, 2014 at 2:32pm

Science
do pure substances have different chemical and physical properties?
Sunday, March 16, 2014 at 12:35pm

stat
A physician routinely makes physical examinations of children. She is concerned that a three-year-old girl has a height of only 87.8 cm. Heights of three-year-old girls have a mean of 97.5 cm and a standard deviation of 6.9 cm (based on data from the National Health and ...
Saturday, March 15, 2014 at 3:24pm

physical science
a particle moves from rest and accelerated at 5.00m/s2. how long does it take to travel m?
Saturday, March 15, 2014 at 7:29am

Phys/Ed Please Help
1. Select the skill-related component which is defined as the ability to combine strength and speed while you are moving. A. balance B. coordination C. power D. speed 2. At the paintball field, Wynonna is always the first one on her team to be hit with the paintball and put ...
Friday, March 14, 2014 at 1:27pm

8th Grade Science (Periodic Table)
1. What conclusions can be drawn about the relationship between the arrangement of elements on the periodic table and the patterns observed in their properties? Properties of elements are related to atomic numbers. Properties of elements are related to ductility. Properties of...
Thursday, March 13, 2014 at 12:39pm

Physical Science
X-rays can take pictures of your bones but visible light cannot. Explain why. Homework question, please and thank you!
Thursday, March 13, 2014 at 11:52am

science
ok, so i saw somebody already put this question here a few min ago but the answer wuz confusing... 25. When an electric current is passed through water during the process of electrolysis, two gases are formed. One gas has a boiling point of –183°C and the other has a ...
Wednesday, March 12, 2014 at 9:01pm

science, pls explain this!
25. When an electric current is passed through water during the process of electrolysis, two gases are formed. One gas has a boiling point of –183°C and the other has a boiling point of –253°C. Has a physical change or a chemical change occurred? Explain. (6 ...
Wednesday, March 12, 2014 at 8:28pm

physics
Under what conditions is mass conserved? A. Whenever the system is isolated or closed. B. Only when the change is a chemical one. C. Always. D. Only when the change is a physical one. I was thinking A.
Tuesday, March 11, 2014 at 2:32pm

Science help
A student combined water, sugar, and salt into a beaker. Which of the following statements are true? a. The individual substances can be separated by physical means.** b. The individual substances cannot be separated by physical means. c. A new substance is made of two or more...
Monday, March 10, 2014 at 2:11pm

Health & P.E. pls check my answers!!!!!
hi, can someone pls check my answers asap!!??? 1.Select the community activity that is a healthy choice to promote fitness for all ages A.annual 5K fun run for charity*** B.annual state fair C.monthly movie in the park D.monthly laser light show at the planetarium 2.Reginald ...
Monday, March 10, 2014 at 1:18pm

physical science
A horizontal force of 10 Newtons acts on a 2 kg block on a level surface.The frictional force between the block and the surface is 3 Newtons.What is the magnitude and the direction of the net force acting on the block?
Sunday, March 9, 2014 at 12:37pm

Physical Science
Describe convection in a room heated by a radiator.
Saturday, March 8, 2014 at 3:50pm

Business Math
As a newly hired staff accountant for Jordan Designs, you have been asked to conduct the year-end physical inventory. During the process, you observe that much of the inventory is outdated and there fore could not be sold for the recorded cost. You recommend to your manager ...
Saturday, March 8, 2014 at 3:25pm

Physical Science
22. Why does a heat pump need an external source of energy (such as electrical energy)?
Saturday, March 8, 2014 at 2:37pm

physical science
An airplane trvels with a velocity of 200 mi/h in a direction 30 deg. west of north of 1.50 h. How far north and how far west is it from its starting point?
Friday, March 7, 2014 at 8:49pm

physical
an airplane takes off at an angle of 30 to the horizontal. if the component of its velocity along the horizontal is 250 km/h , what is its actual velocity? also find the vertical component.
Friday, March 7, 2014 at 10:09am

health
How can communities and government help promote physical activity initiatives? A. Raise taxes B. Lower taxes C. Eliminate sidewalks D. Create walking trails
Wednesday, March 5, 2014 at 5:08pm

Chemistry
Compare the physical and chemical properties of acids and bases.
Tuesday, March 4, 2014 at 8:52pm

Chemistry
Compare the physical and chemical properties of acids and bases.
Tuesday, March 4, 2014 at 7:31pm

Science
1. What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a heterogeneous mixture? (1 ...
Tuesday, March 4, 2014 at 12:48pm

Science
1.   What would happen to an object if the force of gravity on Earth was decreased by half?  (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2.   Which of the following ...
Tuesday, March 4, 2014 at 11:53am

Physical Sciences
A man with a mass of 80KG stands on a bathroom scale on the floor of a lift. Determine the reading of the scale if the lift moves downwards with a constant velocity at 2metre per second.
Monday, March 3, 2014 at 2:19pm

Physical Science
The air temperature on a certain day is 86 degrees F A)Convert to Celsius? B) Calculate the sound of speed in air? C)When a 653Hz tornado siren is turned on, the sound takes 2.3s to reach an observer. How far is the observer from the main siren, and what is the wavelength of ...
Sunday, March 2, 2014 at 2:34pm

Physical Science
An ultrasonic wave in water is a compression wave that travels at 1,400 m/s A) An ultrasonic wave from a ship travels to the bottom of a lake and back in 0.16s. How deep is it at this point? B) If an ultrasonic wave is emitted in the ocean where the ocean's depth is 3.5km...
Sunday, March 2, 2014 at 2:31pm

(I need alot of help in) Physics
So in physics lab we did an experiment with a cart with two different masses on a air track (practically eliminating kinetic friction). The track was tilted at 4 degrees. Using 4 photo-gates I got the speed of both gliders and the height at each point. I made two graphs making...
Friday, February 28, 2014 at 5:35am

PHYSICAL SCIENCE
A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the average adult burns or expends about 0.45 Cal/h for every pound of body weight. How many Calories would a 179 lb person burn during 10 hours of sleep? (Note that 1 Cal = 1 kcal.)
Thursday, February 27, 2014 at 3:55pm

physical science
A motorcycle starts from a standstill. In 15 seconds it reaches a velocity of 20 m/s. What is the motorcycle's average acceleration?
Wednesday, February 26, 2014 at 9:17pm

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