Tuesday
May 21, 2013

# Homework Help: Physical Education

Recent Homework Questions About Physical Education

Heat Transfer
A factory would like to produce plain carbon steel strips with pieces of polyethylene plastic ﬁlm bonded on them. The bonding operation will use a laser that is already available to provide a constant heat ﬂux of q′′0= 85, 000 W/m2for a speciﬁ...
Sunday, April 15, 2012 at 1:18am

physical science 101
find the mass of water in a bath tub whose interior is 1.300m long and 0.600m wide and that is filled to height of 0.3000m (hint: the density of water =1000kg/m^3)
Thursday, April 12, 2012 at 10:20pm

physical science
A disturbance sends ripples across water in a tub. These ripples are an example of a? rarefaction longitude wave compression surface wave (my choice) Sound is an example of what kind of wave? transverse wave longitude wave surface wave wavelength (my choice) Waves carry -- ...
Thursday, April 12, 2012 at 8:22pm

Physical Science
A hockey puck moving at 28 m/s is caught by an 80.00 kg man who was at rest. The man and puck move together after the collision. The puck's mass is 0.16 kg. What is the final velocity?
Thursday, April 12, 2012 at 3:47pm

physical science
Sarah lifts a 345 g shopping bag a distance of 1.2 meters onto a shelf. How much work was done?
Thursday, April 12, 2012 at 8:33am

Life Orientation
Describe the life style disease Lack of Physical Fitness and Proper Nutrition in the Adolescent and explain 5 or more factors that contribute to the disease.
Wednesday, April 11, 2012 at 11:46am

6th geo
a prominent physical feature along the west coast of england is th
Tuesday, April 10, 2012 at 7:09pm

physical
if a person exerts 250n force to lift a 1250n object using a simple machine, what is the mecahnical advantage of the machine
Monday, April 9, 2012 at 10:43am

physical science
What is the Ratio for Al2(CrO4)3
Sunday, April 8, 2012 at 8:49pm

Physical Science
I need some help. I have tried working this problem and can't get it. What is the mass of the Sun, in kilograms, based on the revolution period and distance from Venus?
Sunday, April 8, 2012 at 2:27am

Physical Science
I need some help. I have tried working this problem and can't get it. A class is building a scale model of the planets based on the model of Mercury having a radius 0.5cm. What is the diameter of Saturn for this model?
Sunday, April 8, 2012 at 2:26am

Physical Science
I need some help. I have tried working this problem and can't get it. A scale model of the solar system is being constructed where 40cm of the model represents 0.5 AU of actual distance. What is the model dimension, in meters, for the distance of Jupiter from the sun?
Sunday, April 8, 2012 at 2:22am

science
how do u draw a detailed particle diagram showing chemical and physical changes in rocks? I actaully found the sheet on the internet whille reseaching the answer. I typed in the question and there was the sheet first one as well!!!!
Friday, April 6, 2012 at 6:46am

physical
A block with mass m1 on a plane inclined at angle ƒÑ to the horizontal is connected to a second hanging block with mass m2 by a cord passing over a small, frictionless pulley, as shown. The coefficient of static friction is Us ƒÝ s and the coefficient ...
Thursday, April 5, 2012 at 6:19pm

physical science
The primary voltage is still 120 V and the number of primary turns = 60, but now the power in the primary side is 3000 Watts and there is a 120 ohm resistor connected to the secondary. Find the current in the resistor, and the secondary voltage and # turns.
Wednesday, April 4, 2012 at 10:22pm

6th grade geography, Spain.
Questions: 1) Name some of the major physical features of Spain. 2) What is Spain's economy based on? 3) Why is there a cultural divergence in Spain? 4) What other cultures have mixed with or influenced Spanish culture? 5) About 13% of Portugal's people are illiterate...
Tuesday, April 3, 2012 at 9:10pm

6th grade geography, France
climate- online content 3 distinctive climates in France, describe them. Three types of climate may be found within France: oceanic, continental, and Mediterranean. oceanic- having relatively small temperature differences between summer and winter continental- relatively dry ...
Tuesday, April 3, 2012 at 3:28pm

Government
Need a response to all 3 statements 1.The US Supreme Court has ruled that the death penalty does not violate the 8th Amendment protection against "cruel and unusual punishment". Still this remains a highly controversial topic. How do you feel about the death penalty...
Tuesday, April 3, 2012 at 3:02pm

Physical Science
How much heat is needed to melt a sample of ice if the temperature of 150 g of water in the calorimeter is lowered from 23.0 C to 0 C?
Tuesday, April 3, 2012 at 1:36pm

Health
What can health care providers do to help promote physical activity initiatives? A. Absolutely nothing, they do enough B. Advise patients on physical activity and how they can do it safely C. Advise patients on how to avoid physical activity D. Advise patients on physical ...
Tuesday, April 3, 2012 at 1:32pm

Biology
If you are looking at a flame burning in a pit, what are the physical and chemical process/changes? Thanks
Tuesday, April 3, 2012 at 12:14pm

PHYSICAL GEOGRAPHY
ON THE WINWARD SIDE OF THE MOUNTAIN SHOULD THE RELATIVE HUMIDITY OF THE PARCEL CHANGE AS IT RISES FROM 200 M TO 400 M
Tuesday, April 3, 2012 at 6:50am

Physical Science
Distinguish between longitudinal and transverse waves. Do all waves fall into one or the other of these categories? If not, give an example of one that does not?
Monday, April 2, 2012 at 4:53pm

life orientation
Describe the life style disease/behaviour and explain 5 (more)factors that contribute to the disease.topic that refers to:lack of physical fitness and proper nutrition in the adolescent
Monday, April 2, 2012 at 5:30am

Physical Science
what amount of energy in calories would it take to bring 20 grams of solid ice at negative twelve degrees celsius to liquid water at 100 degrees celsius?
Sunday, April 1, 2012 at 10:53pm

physical science
a hammer falls off a rooftop and strikes the ground with a certain kinetic energy. if it fell from a roof twice as tall, how would its kinetic energy compare? explain
Thursday, March 29, 2012 at 3:15pm

PHYSICAL SCIENCE QUESTION PLEASE I NEED YOUR HELP!
What is common to all light sources, including incandescent, fluorescent, neon, halogen, laser, and sodium-vapor devices? Thank You I really appreciate your help! :3
Thursday, March 29, 2012 at 2:50pm

physical science
A soccer player applies a force of 51.5 N to a soccer ball while kicking it. If the ball has a mass of 0.46 kg, what is the acceleration of the soccer ball?
Thursday, March 29, 2012 at 1:57pm

science
Examine the obvious environmental impacts as well as significant social and physical ramifications of urban sprawl. What is the relationship between landscape and psychological well being? After defining this relationship, discuss how the presence or absence of natural beauty ...
Thursday, March 29, 2012 at 3:24am

Physical Science
What is the kinectic energy in joules of a 500kg automobile traveling at 45km/hr?
Tuesday, March 27, 2012 at 10:15pm

English
Can you please check these sentences, too? Thank you. 1) Unless you improve your handwriting I won’t check your next paragraphs. 2) Unlike Sissy, who is described as a black-haired and black-eyed girl, Bitzer has a fair complexion, emphasized by the light hair and light ...
Tuesday, March 27, 2012 at 6:18pm

physical science
absolute zero is the same as
Tuesday, March 27, 2012 at 4:54pm

Geography- Market Areas
The GIS assumes that you will root for the team nearest you. Thus, it draws market areas based solely on the distance to the nearest baseball team. In real life, however, other factors can affect or distort the market area so that the distance is not equally divided between ...
Monday, March 26, 2012 at 6:29pm

network topology
what type of home network topology do you utilize? does the physical topology differ from its logical topology? if you do not have a homework, research a friends network and use that data in your response.
Sunday, March 25, 2012 at 5:15pm

physical
5 facts about wounds
Thursday, March 22, 2012 at 9:19pm

health
Need help in answering this question How do physical changes during old age impact on the client?
Wednesday, March 21, 2012 at 7:24am

Physical Science
Two identical beakers are both half filled with a liquid. Beaker A contains water and Beaker B contains a liquid that is denser than water. Which of the following is FALSE? a. The pressure at the bottom of Beaker B is greater than that at the bottom of Beaker A. b. The ...
Tuesday, March 20, 2012 at 9:02pm

Physical Science
During a storm, the wind exerts a 150-N force on a window that measures 1.00 m by 0.50 m. The outside air pressure is 101 kPa. What pressure, in pascals, does the wind exert on the window? a. 75 Pa b. 150 Pa c. 1.5 x 10^3 Pa d. 3.0 x 10^2 Pa e. 3.0 x 10^5 kPa
Tuesday, March 20, 2012 at 9:00pm

English
Can you please check these other sentences,too? Thank you. 1) Every detail in the novel is accounted for in the most precise manner. 2) Friday's physical traits are similar to those of a European. Friday doesn't believe in God so he is not Christian. Friday is not ...
Tuesday, March 20, 2012 at 6:02pm

English
I tried to check things myself but I still have a few doubts. Please, have a look at them. 1)A novel is retrospective when the narrator recollect memories from his/her past. 2) Friday is similar to a European in his complexion. However, he describes only few negative aspects ...
Tuesday, March 20, 2012 at 1:45pm

English
Here are other sentences I need to check. Can you please help me to have a look at them? Thank you. 1) In his Robinson Crusoe, Defoe uses retrospective first person (or 1-st person) narration because he recalls memories from his past adventures. (Not because the characters are...
Tuesday, March 20, 2012 at 12:45pm

physics
locks A, B, C are placed in the adjacent figure and connected by ropes of neglible mass. Both A and B weigh w = 25.0 N each and the coefficient of kinetic friction between each block and the surface is 0.35. A) If Block C descends with constant velocity find atleast three ...
Monday, March 19, 2012 at 11:44am

physical
what is use of physicaleducation
Monday, March 19, 2012 at 3:19am

Physical Science
I balanced Li(s) + Cl2(g)= LiCl(s) to 2Li(s) + Cl2(g)= 2LiCl(s) Now the question is, if you have 39.8g Li, how many moles of LiCl would you have? I am stuck on this part. Any help would be appreciated.
Sunday, March 18, 2012 at 8:38pm

English
Could you please check these sentences? Thank you very much, Writeacher. 1) Your paragraphs show a good knowledge of the literary contents. As to the grammar, you are still unsure in the use of tenses and prepositions. 2) As to cohesion, you failed to write an introduction or ...
Sunday, March 18, 2012 at 10:52am

physical
An object is thrown upward at a certain angle above the ground, eventually returning to erth.1.Is there any place along the trajectory where the velocity and acceleration are perpendicular? If so, where? 2. Is there any place where the velocity and acceleration are parallel? ...
Saturday, March 17, 2012 at 8:54am

physical sciences
An air plane with
Saturday, March 17, 2012 at 8:54am

physical
An object is thrown upward at a certain angle above the ground, eventually returning to erth.1.Is there any place along the trajectory where the velocity and acceleration are perpendicular? If so, where? 2. Is there any place where the velocity and acceleration are parallel? ...
Saturday, March 17, 2012 at 8:52am

physical
baseball is hit with a speed of 30.0 m/s at an angle of 50 It lands on the flat roof of a 10m tall nearby building, If the ball was hit when it was 1.5 m above the ground, what horizontal distance does it travel before it lands on the building?
Friday, March 16, 2012 at 7:25am

Physics
A physical pendulum consists of 3.8 m long sticks joined together as shown in Fig. 15-41. What is the pendulum's period of oscillation about a pin inserted through point A at the center of the horizontal stick? Who can help me with this problem?
Friday, March 16, 2012 at 3:11am

Physics
A physical pendulum consists of 3.8 m long sticks joined together as shown in Fig. 15-41. What is the pendulum's period of oscillation about a pin inserted through point A at the center of the horizontal stick? Who can help me with this problem?
Friday, March 16, 2012 at 3:11am

physical aspects of nature
A 1,440-N crate is being pushed across a level floor at a constant speed by a force of 250 N at an angle of 20.0° below the horizontal; (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 250-N force is instead pulling the block at ...
Thursday, March 15, 2012 at 9:33am

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= 288.9 Kj/mol When this reaction is coupled to the conversion of graphite to carbon dioxide, it becomes spontaneous. What is the chemical ...
Wednesday, March 14, 2012 at 11:51pm

physical science
a cyclist pedals at a constant velocity of 15m.s-1 on a level road. the power delivered by the cyclist is 240W. what is the magnitude of the frictional foce acting against the motion?
Wednesday, March 14, 2012 at 5:44pm

medical coding
Gladys Swain slipped from a sidewalk curb and twisted her right ankle. Because of the severe pain she was suffering and the inability to bear weight on the foot, she sought treatment at her neighborhood hospital emergency department. The treating physicians were fairly ...
Wednesday, March 14, 2012 at 4:07pm

Physical Chemistry
Estimate the heat of the formation of each of the following molecules useing the bond dissociation energies provided (in KJ/mol) (a) NH3 (b) H2O (C) H2O2 D(NÎN)=944; D(H-H)=436; D(OÎO)=498; D(O-O)= 142; D(N-N)=391; D(O-H)=464 NB>all the brackets are foot note
Wednesday, March 14, 2012 at 12:03am

Physical anthropology
Chinese premoderns retain certain H. erectus trails including- A. extreme post orbital construction and sagittal crests B. projecting canines and diastemata C. sagittal ridges and flattened nasal bones D. All of the above
Tuesday, March 13, 2012 at 4:55pm

Physical Anthropology
According to the multiregional evolution model- A. anatomically modern H. sapiens originated exclusively in Africa B. modern H. sapiens are a separate species from Neanderthals C. some local populations of archaic H. sapiens in Europe, Asia, and Africa contributed to the ...
Tuesday, March 13, 2012 at 4:51pm

physical science
the intensity of blue light is lowered will the reading on the ammeter shows a reading which indicates an electric current
Tuesday, March 13, 2012 at 4:13pm

physical science
explain why on photon-electros are emitted when red light is shone on the metal cathode
Tuesday, March 13, 2012 at 4:11pm

physical science
when a photon of energy hf elects an electro violently from an atom. How is this energy distribute in the process me electing electron?
Tuesday, March 13, 2012 at 4:09pm

physical science
(a) If a person wearing such a mask exhales 0.702 g CO2 per minute, How many grams of KO2 are consumed in ten minutes?
Tuesday, March 13, 2012 at 12:46pm

physical science
Since October 2004, Jack Daniels Tennessee whisky, produced in Lynchburg, TN, has been bottled at 80 proof (40% alcohol by volume). Given that the density of ethyl alcohol is 0.789 g/cm3, and that of water 1.00 g/cm3, calculate the concentration of the alcohol in (a) percent ...
Tuesday, March 13, 2012 at 12:44pm

English ms. sue
ms. sue i do characterization on narrator, i not get what be physical traits that be how she look like? cause they have to be different from personality traits.
Monday, March 12, 2012 at 10:17pm

Accounting
Identify internal control principles. (SO 2), C The internal control procedures in Phillips Company make the following provisions. Identify the principles of internal control that are being followed in each case. a. Employees who have physical custody of assets do not have ...
Monday, March 12, 2012 at 2:58pm

Physics
A athlete in good physical condition can land on the ground at a speed of 12m/s without injury , calculate the max height from which the athlete can jump without injury, assuming the takeoff speed is zero
Monday, March 12, 2012 at 2:47am

Physical science
A copper penny has a mass of of 3gram. The atomic number of copper is 29 and the atomic mass is 63,5gram/mol.what is the total charge of all electrons in the penny?
Sunday, March 11, 2012 at 10:30am

Chemistry
Complete and balance the following equations NaHCO3(s)+H+(aq)---> CaO(s)+C(s)---> C(s)+H2O(g)---> CuO(s)+CO(g)---> If possible include charges and physical state.
Thursday, March 8, 2012 at 6:05pm

Catering(Gourmet Essentials)
THURSDAY March 8, 2012 SCHOOL SUBJECTS - Art - Business - Computers - English - Foreign Languages - Health - Home Economics - Math - Music - Physical Education - Science - Social Studies GRADE LEVELS - Preschool - Kindergarten - Elementary School - 1st Grade - 2nd Grade - 3rd...
Thursday, March 8, 2012 at 6:03am

physical science
what was the kinetic energy of each car before breaking
Wednesday, March 7, 2012 at 5:47pm

Physical science
The engine of a car is being lifted out of the car by using a pulley system. The weight of the engine is 8000N. Use a scale diagram to determine the horizontal force, F1 that a mechanic has to use to hold the engine in such a position that the rope makes an angle of 30degrees ...
Wednesday, March 7, 2012 at 4:36pm

physical
When they start to move,car A exerts a force of 600N on its end of the towrope.The frictional force on car B when it accelerates,is 300N And its masses is 1200kg(a)calculate car bs initial acceleration(b)after a while the cars move at a constant velocity and car A exerts a ...
Wednesday, March 7, 2012 at 1:45pm

Physical science
Using the kinetic theory and explain why the weather balloon will burst at high heights?
Wednesday, March 7, 2012 at 8:55am

Geography
How does the physical geography influence the Kite Runner
Wednesday, March 7, 2012 at 4:24am

physical science
6. If one body is positively charged and another body is negatively charged, free electrons tend to [A. move from the negatively charged body to the positively charged body.] B. remain in the positively charged body. C. remain in the negatively charged body. D. move from the ...
Tuesday, March 6, 2012 at 6:22pm

jake
Suppose that you're facing a straight current-carrying conductor, and the current is flowing toward you. The lines of magnetic force at any point in the magnetic field will act in [A. a counterclockwise direction.] B. a clockwise direction. C. the direction opposite to ...
Tuesday, March 6, 2012 at 6:05pm

science
which of the following is a physical change? Milk becomes sour An iron nails rusts All the water in a solution of salt water evaporates leaving a lot of crystals of salt in the bottom of the dish A wooden log is burned leaving ash in the fireplace
Monday, March 5, 2012 at 4:26pm

14
The key to using a pedometer to meet the Physical Activity Guidelines for Americans is to _________. A. First set a time goal and then calculate how many steps are needed each day to reach that goal B. First set a time goal and then calculate how rigorous the steps need to be ...
Sunday, March 4, 2012 at 8:16pm

12
The new Physical Activity Guidelines for Americans allows a person to accumulate 150 minutes a week ________. A. By engaging in 30 minutes of physical activity for 5 days a week only B. By engaging in 50 minutes of physical activity for 3 days a week only C. By engaging in ...
Sunday, March 4, 2012 at 8:14pm

10 ms sue
How can communities and government help promote physical activity initiatives? A. Raise taxes B. Lower taxes C. Create walking trails D. Eliminate sidewalks i got c
Sunday, March 4, 2012 at 8:13pm

9
What can health care providers do to help promote physical activity initiatives? A. Absolutely nothing, they do enough B. Advise patients on physical activity and how they can do it safely C. Advise patients on how to avoid physical activity D. Advise patients on physical ...
Sunday, March 4, 2012 at 8:09pm

Physical Chemistry
Calculate the value of the change in enthalpy(H) when the temperature of 1 mole of a monatomic gas is increased from 25C to 300C.
Sunday, March 4, 2012 at 7:03pm

6
The best physical activity is one that is ________. A. Enjoyable enough to bring along a snack B. Enjoyable enough to be lulled to sleep C. Enjoyable enough to do regularly D. All of the above c
Sunday, March 4, 2012 at 4:26pm

5
What can architects do to help promote physical activity initiatives? A. Construct buildings with active options such as, access to stairs B. Create buildings that do not allow handicap access C. Avoid providing efficient methods of walking within and between buildings D. All ...
Sunday, March 4, 2012 at 4:25pm

1
Which age groups benefit from physical activity? A. Children B. Middle aged adults C. Older adults D. All of the above d
Sunday, March 4, 2012 at 4:20pm

health
Regular physical activity appears to reduce symptoms of ________ for children and adolescents. A. Anxiety and depression B. Low self-esteem C. Identity or role confusion D. All of the above i goty c
Sunday, March 4, 2012 at 4:00pm

Physical Science
An athlete wants to finish a 5K face in 25 minutes. If she runs at a constant speed of 3.4 m/s, will she meet her goal?
Sunday, March 4, 2012 at 1:47am

Physical Science
If the light of a monochromatic source has a photon energy of 4.32 x 10-19 J, what is its wavelength in nm?
Friday, March 2, 2012 at 6:59pm

Physical Science
What is the frequency of a photon of blue light, if it has a wavelength of 440 nm?
Friday, March 2, 2012 at 6:58pm

Physical Science
What is the frequency of a photon of blue light, if it has a wavelength of 440 nm?
Friday, March 2, 2012 at 6:57pm

Physical Science
What is the speed of a photon of red light, if its frequency is 4.3 x 1014 Hz?
Friday, March 2, 2012 at 6:57pm

Physical Science
What is the energy per photon of a light source if it has a wavelength of 460 nm?
Friday, March 2, 2012 at 6:56pm

Physical Science
How many photons of sunlight are striking a 1 square meter surface per second, if it is receiving 600 watts of power?
Friday, March 2, 2012 at 6:56pm

english
please can you help me to arrange if my answers are correct. 1. subject - the audience from ahich you are writing 2. puropose - the reason you are writing 3. readers- the physical, economic political and ethical use place in which the audience will read he document 4. context ...
Friday, March 2, 2012 at 6:45pm

chemistry
At standard pressure, ammonia melts at 195 K and boils at 240 K. If a sample of ammonia at standard pressure is cooled from 200 K down to absolute zero, what physical constants are needed to calculate the change in enhtalpy? I) the heat capacity of ammonia(s) II) the heat ...
Thursday, March 1, 2012 at 8:30pm

chem
At standard pressure, ammonia melts at 195 K and boils at 240 K. If a sample of ammonia at standard pressure is cooled from 200 K down to absolute zero, what physical constants are needed to calculate the change in enhtalpy? I) the heat capacity of ammonia(s) II) the heat ...
Thursday, March 1, 2012 at 7:17pm

physical science
In raising a 5000-N piano with a pulley system, the movers note that, for every 2m of rope pulled down, the piano rises 0.3m. Ideally, show that the force required to lift the piano is 500-N.
Tuesday, February 28, 2012 at 4:07pm

Physical Science
A boat exerts a force of 417N pulling a water skier who is 64kg at rest. The skier speed is 15m/s. over what distance was the force exerted?
Tuesday, February 28, 2012 at 12:10pm

physical science
a bicyclist accelerates at 0.89m/s squared during a 5.0 s interval. What is the change in speed of the bicyclist and the bicycle?
Tuesday, February 28, 2012 at 11:42am

Physical science
What is the force in newtons acting on a 5.7 kg package of nails that falls off a roof and is on its way to the ground?
Tuesday, February 28, 2012 at 11:37am

If no friction acts on a diver during a dive, then which of the following statements is true? A) The total mechanical energy of the system increases. B) Potential energy can be converted into kinetic energy but not vice versa. C) (KE + PE)beginning = (KE + PE)end D) all of the...
Monday, February 27, 2012 at 11:17am

Physical Science
How much work is needed to lift an object with a mass of 51.0 kg to a height of 2.00 meters?  Calculate your answer in Joules Answer
Sunday, February 26, 2012 at 9:39pm

PED 212
Using the databases listed within the Ashford Online Library you will evaluate a research-based article from a peer reviewed journal. Your critique must be grammatically correct, properly cited, and utilize APA style of writing. Choose one of the following topics that can be ...
Sunday, February 26, 2012 at 3:49pm

PED 212
Reflective Journal After reading Chapter 1, reflect on how your perceptions of physical education have changed based on your understanding of its evolution.
Sunday, February 26, 2012 at 3:48pm

physical science
120ml of a solution whose concentration is 30g/ml was diluted with distilled water by raising its volume to 160cm3. Calculate the concentration of the new solution.
Saturday, February 25, 2012 at 4:17pm

health
patricia had a car crash while she was on her way to work one morning.she was badly injured and needed to have an arm amputated.explain three effects that patricias physical disability may have on her self-concept.patricias husband,andy is a teacher.explain three ways that ...
Saturday, February 25, 2012 at 1:10pm

american history
I nee help revising my essay here it is This is what my general view on American History. Well let me tell you it’s a course that we all have to take in high school to graduate. In school we are confronted with American History, state History and general courses of the ...
Friday, February 24, 2012 at 7:37pm

physical chemistry
A sample of the sugar D-ribose (C5H10O5) of mass 0.727g was placed in a constant volume calorimeter and then ignited in the prescence of excess oxygen. The temperature rose by 0.910K In a separate experiment in the same calorimeter, the combustion of 0.825g of benzoic acid for...
Thursday, February 23, 2012 at 11:46pm

A wooden raft 3 m long x 2 m wide x 20 cm thick floats on a freshwater lake. A) Determine the buoyant force? B) If the raft itself has a mass of 600 kg, how many 65-kg people could it support?
Thursday, February 23, 2012 at 1:05pm

Physical Education
1. Aerobic activities can be done for an extended period of time and supply oxygen to your muscles. Such activities help develop _______________________. 2. You can change your _______________________ by exercising regularly and eating healthfully. 3. The ...
Thursday, February 23, 2012 at 12:52pm

Physical Science
If a hot iron ball is dropped into 200.0 gram of cooler waterthe water temperature increases by 2.0 celsius and the temperature of the ball decreases by 18.6 celsius. What is the mass?
Wednesday, February 22, 2012 at 8:39pm

Physical Science
Balance this equation: I2+HNO3 = HIO3+NO2+H2O
Wednesday, February 22, 2012 at 8:17pm

physical science
find the mass of sodium chloride formed when 6.9g of sodium burns in a gas jar filled with chlorine gas.
Wednesday, February 22, 2012 at 3:17pm

English
Thank you very much Writeacher! I added a few more things. I'd like you to check them, please 1)At the end of sonnet 12: The image of time as death, bearing a scythe (typical in medieval and Renaissance iconology) is left impotent by the presence of the fair youth’s ...
Tuesday, February 21, 2012 at 6:56pm

English
Writeacher, I'm posting the last sonnet I need to rephrase for tomorrow. I really hope you can have a look at it. 1) Sonnets 116 is about love in its most ideal form. The poet thinks that true love is to be based on mutual trust and understanding. 2) True love doesn’t...
Tuesday, February 21, 2012 at 5:42pm

physical chemistry
1.) Calculate delta rH for the freezing of water at one bar and -10 degrees C. The heat capacities are H2O(s)=36.9 JK-1mol-1 and H2O(l)=74.5JK-1mol-1. delta H for freezing of water at 0 degree C is -6602Jmol-1 (assume C is independent of temperature). 2.) Assume the hot brick ...
Tuesday, February 21, 2012 at 5:03pm

Physical Science
A 200-L iron tank has a mass of 36 kg. a) Will it float on seawater if empty? b) What mass of potatoes could be added such that the tank would still float? [Note: 1000 L = 1 m3 ]
Tuesday, February 21, 2012 at 3:56pm

Physical Science
A wooden raft 3 m long x 2 m wide x 20 cm thick floats on a freshwater lake. A) Determine the buoyant force? B) If the raft itself has a mass of 600 kg, how many 65-kg people could it support?
Tuesday, February 21, 2012 at 3:48pm

physics/chemistry
is conductivity a physical or chemical property
Tuesday, February 21, 2012 at 10:04am

Physical Science
How do you write the chemical equation for neutralization of nitric acid, HNO3, with magnesium hydroxide, Mg (OH)2, first with spectator ions and then without spectator ions?
Monday, February 20, 2012 at 9:38pm

PSY
Humans develop as a result of interactions of 3 influences: genes that the person has inherited, events and situations that are external to the individual and the unfolding of a genetically influenced, often age-related, sequence of physical changes and behavior patterns. ...
Monday, February 20, 2012 at 1:29pm

English
Here is the second part of the rephrase. Thank you very much, Writeacher! 1) Mr. B. charges her with overreacting and, by way of giving her some more substantial grounds for anguish, invites her to sit on his knee. As a matter of fact, Mr B attempts to rape her taking ...
Monday, February 20, 2012 at 4:16am

physics
A grandfather clock uses a physical pendulum to keep time. The pendulum consists of a uniform thin rod of mass M = 7.01 kg and length L = 0.15 m that is pivoted freely about one end, with a solid sphere of the same mass, 7.01 kg, and a radius of L/2 centered about the free end...
Sunday, February 19, 2012 at 3:20pm

Psychology
The emotional risk factor that poses a significant danger to one's physical health is proneness to: a. Antagonistic anger b. depression c. loneliness and worry d. anxiety and helplessness I chose B.
Sunday, February 19, 2012 at 2:07pm

physics
A grandfather clock uses a physical pendulum to keep time. The pendulum consists of a uniform thin rod of mass M = 7.01 kg and length L = 0.15 m that is pivoted freely about one end, with a solid sphere of the same mass, 7.01 kg, and a radius of L/2 centered about the free end...
Sunday, February 19, 2012 at 9:43am

LANG
noxious: harmful or injurious to health or physical well-being A. connotative B. denotative it think A
Saturday, February 18, 2012 at 5:20pm

Physical Science
​ A 3-kg stone is dropped from a height of 100 m.  Find its kinetic and potential energies when it is 50 m from the ground.
Friday, February 17, 2012 at 11:06am

physical Science
When a light bulb is rated at 60 W ft what do this mean?
Thursday, February 16, 2012 at 9:28pm

physical science
a race car having a mass of 2550 kg is accelerated by a force of 127,500n.what is the accelerration?
Wednesday, February 15, 2012 at 9:13pm

physical science
A child pushes a book a distance of 17m. If 5J of work was done, how much force was used?
Wednesday, February 15, 2012 at 6:15pm

chemistry
Mercury reacts with oxygen to produce mercury(II) oxide. Hg(l) + O2(g) → HgO(s) a. Balance the reaction equation. Include physical states. 2Hg(l) + O2(g) → 2HgO(s) b. What is the theoretical yield (in grams) of HgO if 255 g of Hg are reacted with 255 g of O2? ???
Tuesday, February 14, 2012 at 10:32pm

chemistry
1-Butene (CH2=CHCH2CH3) burns in the presence of O2 to produce CO2 and H2O. Write the balanced chemical equation for this reaction (omit physical states and use condensed molecular formulas). CH2CHCH2CH3+6O2=4CO2+4H2O
Tuesday, February 14, 2012 at 10:12pm

chemistry
Aluminum metal reacts with oxygen gas (O2) to form aluminum oxide. a. Write a balanced equation for this oxidation-reduction reaction. (In this problem you need not worry about the physical state of the reactants or product.) 2Al+3O2=2Al2O3 b. which reactant is oxidized? O2 c...
Tuesday, February 14, 2012 at 10:00pm

English
jake dad not be anymore physical and he not be able to grab jake daughter when she fall into lake. Jake effects rescue. what be the symbolic meaning of incident? jake own past come infront of his eyes?
Tuesday, February 14, 2012 at 8:09pm

English
why jake dislike how his father smile at his attempt and failure in physical activies? That be because he feel embarrassed?
Tuesday, February 14, 2012 at 7:30pm

Physical Geography
38 degrees celcius is what degree F?
Monday, February 13, 2012 at 10:56pm

Human Services
on a intake what are physical factors?
Monday, February 13, 2012 at 10:18pm

psychiatry
Can someone help me to understand physical factors, and psychosocial factors? The case I am dealing with has to do with a female drug user who was emotional abused by her parents who were also drug users and her husband physically abused her. Would the physical factors include...
Monday, February 13, 2012 at 7:03pm

Physical science
A 9kg mass travelling eastwards at 4m.-1 collides with a 3kg mass westwards at 8m.-1.whatis the total momentum of the masses?
Monday, February 13, 2012 at 2:10pm

SCIENCE
Two 2.6 kg physical science textbooks on a bookshelf are spaced 0.22 m apart. What is the magnitude of the gravitational attraction between the books?
Sunday, February 12, 2012 at 11:10pm

physical
Consider a pulse of laser light aimed at the moon that bounces back to earth. The distance between Earth and Moon is 3.8 x 10 (small eight above) m. Show that the round-trip time for the light is 2.5 s.
Sunday, February 12, 2012 at 11:41am

Physical science
Is it possible for an object to have more kinetic energy but less momentum than the other object? Less kinetic energy but more momentum? *i know the answer to both questions is yes, however, i cannot think of examples ??
Saturday, February 11, 2012 at 7:57pm

english
i need help making my conclusion sentence more sense for essay on love. True love be built on solid base of trust, commitment, selflessness and shared admiration without judgment and physical attraction.
Saturday, February 11, 2012 at 7:28pm

physical science
A worker pushes horizontally on a large crate with a force of 312 N, and the crate is moved 6.5 m. How much work was done?
Saturday, February 11, 2012 at 6:38pm

physical Science
What was the average speed in km/h of a car that travels 400km in 4-5h?
Thursday, February 9, 2012 at 7:24am

English
Thank you very, very much indeed! Here is the second part, concerning the scientific and linguistic objectives. The question is: " What are the concrete objectives of the partnership"? 1)Scientific objectives - describing the biodiversity, the presence of ...
Wednesday, February 8, 2012 at 10:22am

English
Writeacher, I have finally reached an agreement with my German partner. However, I'll have to check the English version of the application form by tomorrow (which is full of mistakes and contradictions! Plus: I'm ill and on sick leave). I really hope you can help me ...
Wednesday, February 8, 2012 at 9:29am

physical
a copper calorimeter of mass 150g was half filled with water of 300g and temperature 0c. 5g of ice at oc was added to the content, later some quantity of steel was passed into the mixture and temperature by 20c. calculate the quantities of steel added if the latent heat of ...
Tuesday, February 7, 2012 at 6:02pm

Physical Chemistry
A mole of air (80% Nitrogen, and 20% Oxygen by volume) at 298.15K is brought into contact with liquid water which has a vapor pressure of 3168Pa at this temperature. a) what is the volume of the dry air if the pressure is 1 bar? b) what is the final volume of the air saturated...
Monday, February 6, 2012 at 10:45pm

Science
What environmental niche is most suitable for an animal that eats fruit? A.artic tundra B.temperate swamp C.temperate plains D.tropical forest D? Which of these is NOT an adaptation for the Fennec Fox? A.beige coat to camoflauge B.small ears to prevent heat loss C.hunting ...
Monday, February 6, 2012 at 8:21pm

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