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April 19, 2014

Homework Help: Physical Education

Recent Physical Education Questions

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physical science
A liter is 1 kilogram of water 4186 J /(kg degC) * (50-25)deg C * 1 kg = 104,650 Joules
Tuesday, February 5, 2013 at 8:20pm

physical science
How much energy would be needed to warm 1.5 L of water from 25 °C to 50 °C? The specific heat capacity of water is 4186 J/kg/°C.
Tuesday, February 5, 2013 at 8:14pm

Please help with Physical Science 2!! Confused!
NaCl is 23 + 35.5 = 58.5 grams / mol so 175.32 grams + 1 mol/58.5 grams = 3 moles of NaCl and 3 moles * 6*10^23 molecules/mole = 1.8*10^24 molecules
Tuesday, February 5, 2013 at 8:13pm

Please help with Physical Science 2!! Confused!
Complete the following table by replacing question marks with the correct numbers: (Note: Each horizontal row is a separate example, so in row #1, 175.32 grams of NaCl is how many moles of NaCl and how many molecules of NaCl does it contain?) Grams NaCl Moles NaCl # Molecules ...
Tuesday, February 5, 2013 at 6:08pm

Physical Science Please Help!
Am I supposed to divide 29.22 by 58.44?
Tuesday, February 5, 2013 at 5:34pm

Physical Science Please Help!
what is 29.22grams/(58.44grams/mole) ?
Tuesday, February 5, 2013 at 5:32pm

Physical Science Please Help!
Table salt, sodium chloride, has the formula NaCl. A weight of 58.44 grams of table salt contains 1.0 mole of NaCl molecules. How many moles of NaCl are contained in 29.22 grams of NaCl?
Tuesday, February 5, 2013 at 5:08pm

Physical Science
a=v-u/t where a, is the acceleration,v the final velocity,u the initial velocity and t the time.=a=x ,v=15ms`,u=0 and t=10 therefore from a=u-v/t you have a=15-0/10=1.5ms`2
Monday, February 4, 2013 at 5:54pm

Physical Education
What is the difference between physical and motor fitness? Thank You
Monday, February 4, 2013 at 4:02pm

Physical science
W = fd W also = change in K
Monday, February 4, 2013 at 3:39pm

Physical science
A sustained force of 56 moves a model airplane 16 along its runway to provide the required speed for takeoff. Find the kinetic energy at takeoff. What is the formula?
Monday, February 4, 2013 at 3:26pm

chemistry
can u tell me whats the most imprtant subject i need to know for molecular composition of gases ? and for physical characteristics of gases?
Sunday, February 3, 2013 at 6:16pm

physical science
(A) the force parallel to the ground is 400 cos50. The force perpendicular to the ground is 400 sin50.. (B) When pulling the lawnmower, the upward applied force opposes t he weight force. This has the effect of reducing the friction force.
Saturday, February 2, 2013 at 10:09am

physical science
A man pulls a lawnmower with a mass of 50 kilogram accross a lawn, its pulling force is 400 newtons at angle of 50 degrees with a horizontal line.(a) resolve the force into two components , one parallel to the ground and one perpendicular to the ground .(b) explain why it is ...
Saturday, February 2, 2013 at 9:43am

physical sciences - units
30 m^3 is volume
Friday, February 1, 2013 at 3:41pm

physical sciences
how much work is required to accelerate a can with a mass of 1000kg from 20 metre per second to 30m cubed
Friday, February 1, 2013 at 12:14pm

Physical Science
What is the acceleration of a car that moves from rest to 15.0m/s in 10.0s ?
Thursday, January 31, 2013 at 10:27pm

Physical science
A create is pulled across a horizontal surface with a force of 100N which makes an angle of 30 degrees with a horizontal.(a)draw a diagram of the horizontal and vertical components of the force.(b)resolve the force in its parallel and perpendicularcomponents of the force.
Thursday, January 31, 2013 at 2:52pm

Physical science
9 mol HI(g)is sealed with H2(g)in an empty 2 dm container when equilibriup is reached by the reaction..H2(g)+I2(g)=2HI(g) at 130 C it found that there are 5 mol HI(g)in the equilibrium mixture.calculate the equilibriup constant
Thursday, January 31, 2013 at 10:53am

physical
A student is standing in the basket of a hot air-ballon which is moving upwards at a constant speed of 15 m.s.-1.He leans over the edge of the basket and lets go of the sandbag which takes 5 seconds to reach the ground.what is the acceleration of the hot-air balloon while the ...
Thursday, January 31, 2013 at 10:05am

physical science
push a box across a tablewith a force of 5 newtons and the box moves 0.5 meters. how much work is been accomplished?
Wednesday, January 30, 2013 at 8:53pm

physical science
endothermic
Wednesday, January 30, 2013 at 5:36am

physical science
In terms of energy, the general chemical equation AB+CD+energy = AD+CB represents a (an)_________ reaction.
Tuesday, January 29, 2013 at 11:19pm

PHYSICAL SCIENCE
WHAT IS THE GPE OF A BOOK THAT HAS A MASS OF 1KG THAT IS SITTING ON A SHELF THAT IS 2M ABOVE THE GROUND?
Tuesday, January 29, 2013 at 8:20pm

Health
... all kinds of problems, both physical and mental.
Tuesday, January 29, 2013 at 6:23pm

Social Studies
According to Sigmund Freud, human behavior was? A)ruled by two related emotions: love and pity. B)determined by the physical makeup of the brain, and could not be altered. C)the one factor that made human beings superior to all other animals. D)strongly determined by repressed...
Tuesday, January 29, 2013 at 11:11am

physical science 11
whats the force of electrical attraction between a proton and an electron that are 9.5x 10-11
Tuesday, January 29, 2013 at 9:57am

Physical science
F(fr) = μmg
Monday, January 28, 2013 at 3:36pm

Physical science
A box with a mass of 2,ookg rests on a horizontal surface.Calculate the maximum static friction if ms=0,4oo
Monday, January 28, 2013 at 3:11pm

Physical Science
Q=λm=335000•0.1=33500 J
Monday, January 28, 2013 at 3:04pm

Physical Science
How much heat is needed to melt 100 g of ice at 0°C? A: 8000 B: 540 C: 7200 D: 100
Monday, January 28, 2013 at 2:01pm

physical science
T=3000 N 1. T(x)=Tcosα = ..... 2. T(y) = Tsinα = …..
Monday, January 28, 2013 at 12:28pm

physical science
A tractor pulls a tree trunk across horizontal piece of ground. If the force in the chain is 3000N and the chain forms an angle of 30 degrees with the group , calculate 1the force with wch the tree is pulled across the ground 2 the force with wch the tree is lifted
Monday, January 28, 2013 at 11:55am

physical sciences
Imagine a circle with a diameter of 2km.if this represents an atom ,which answer would best represent the nucleus?choose the correct answer:a table tennis ball(diameter;2cm)atennis ball(diameter;7cm)avolley ball(diameter;20cm)a soccer ball(diameter;25cm)
Monday, January 28, 2013 at 11:03am

Physical science
An object is on a horizontal surface,three force act horizontal on the object.3N to the left,12N to the right,in to the left.at the same time,another three force act vertically on the object,4N upwards,10N downward,2N downwards determine the resultant horizontal and vertical ...
Monday, January 28, 2013 at 10:27am

Physical science
An object is on a horizontal surface,three force act horizontal on the object.3N to the left,12N to the right,in to the left.at the same time,another three force act vertically on the object,4N upwards,10N downward,2N downwards determine the resultant horizontal and vertical ...
Monday, January 28, 2013 at 10:24am

phy
1 Physical quantities such as length, mass, time and temperature are referred to as vector quantities fundamental quantities scalar quantities derived quantities 2 The following are examples of vector quantities except displacment velocity accleration speed 3 The addition of ...
Monday, January 28, 2013 at 3:35am

phy
A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is NOT true? The passenger is in motion relative to the passer-by The passer-by is stationary relative to the passenger Both ...
Monday, January 28, 2013 at 3:33am

Physical Science
Volume is measured in cm^3, not cms. The new "crushed" density is higher by a factor of V1/V2 = 240/195 = 1.231 1.231 x 0.15 = ___ g/cm^3
Monday, January 28, 2013 at 1:29am

CHM
I would agree that burnt toast is an example of a chemical change. I suppose if one wanted to get picky, "leaving" the toast somewhere is a physical change but burning it is a chemical change.
Sunday, January 27, 2013 at 11:39pm

CHM
Which of the following is not an example of a physical change? is this the right Answer accidentally leaving a piece of toast in the toaster until it is completely black
Sunday, January 27, 2013 at 11:24pm

Physical Science
A hot dog bun (volume 240 cm3) with a density of 0.15 g/cm3 is crushed in a picnic cooler into a volume of 195 cms. What is the new densitu of the bun?
Sunday, January 27, 2013 at 11:07pm

Accounting
Hello, I’m having a difficult time understanding how to adjust the following unadjusted accounts: A/R ……………… ​3;………………..​480,000 Accum. Depr, building………116,000 Accum. Depr, ...
Sunday, January 27, 2013 at 7:30pm

physical
5 km this is a 3, 4 , 5 right triangle 5^2 = 3^2 + 4^2 25 = 9 + 16 time has nothing to do with the problem
Sunday, January 27, 2013 at 2:01pm

physical
A marathon runner runs 3km in direction 0degree and them 4km in direction 90degree. total time for the race is 2 hours.so determine the total distance covered?
Sunday, January 27, 2013 at 1:53pm

Physics
The modern Boeing 747 passenger jet airplane cruises at a speed up to 900 km/hr, at an altitude of 11,000 m. The cabin pressure is maintained equivalent to the atmospheric pressure at an altitude of 2,000 m. This is called the "cabin altitude". The pressure as a ...
Sunday, January 27, 2013 at 4:01am

Physical Education
What are the intra moral and extra moral activities
Sunday, January 27, 2013 at 2:21am

statistic
Over the past 10 years, the local school district has measured physical fitness for all high school freshmen. During that time, the average score on a treadmill endurance task has been μ  19.8 minutes with a standard deviation of   7.2 minutes. Assuming that ...
Sunday, January 27, 2013 at 2:10am

Language Art
A Nazi flag There are many others, no doubt, but that's the first physical object that comes to my mind.
Friday, January 25, 2013 at 7:51pm

Language Art
I'm currently doing a project and need a physical object to represent "racism". Anyone have a suggestion of such item? Thanks
Friday, January 25, 2013 at 7:40pm

Physical Sciences
If H=12 m is as high as it rises, the potential energy there must equal the initial kinetic energy M g H = (1/2) M V^2 M cancels out, so V = sqrt(2 g H) g is the acceleration of gravity
Friday, January 25, 2013 at 1:13pm

Chemistry 12
I take issue with some of the definitions of strong acids/strong bases I have seen at this site. By definition, strong acids and strong bases, Bronsted-Lowry or otherwise) are those that ionize 100% and that usually means in aqueous solution. Here is a good site to read about ...
Friday, January 25, 2013 at 11:46am

Physical Sciences
How do I calculate the initial velocity of a ball if i've only given a maximum height of 12metres above its starting point?
Friday, January 25, 2013 at 11:35am

Science
1. How many chromosomes do human sex cells have? (1 point) 22 43 46 23 2. The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point) genotype; phenotype genome...
Friday, January 25, 2013 at 1:46am

physical
An asteroid in an elliptical orbit about the sun travels at 3.9 106 m/s at perihelion (the point of closest approach) at a distance of 3.7 108 km from the sun. How fast is it traveling at aphelion (the most distant point), which is 8.6 108 km from the sun?
Thursday, January 24, 2013 at 10:36pm

phy
Tinny insects such as mosquitoes can seat on the surface of water. Which physical principle makes this possible?
Thursday, January 24, 2013 at 10:09pm

math
is eating an apple a physical change?
Thursday, January 24, 2013 at 6:55pm

math
is eating an apple a physical change?
Thursday, January 24, 2013 at 6:48pm

math
is eating an apple a physical change
Thursday, January 24, 2013 at 6:33pm

spatial organisation of society
Spatial organisation of society is concerned with the pattern of arrangement,It refers to the arrangement of physical and human objects on the earth surface.
Thursday, January 24, 2013 at 2:26am

Physical Science
3.B
Thursday, January 24, 2013 at 12:50am

biology
It depends on what the initial genotypes were, but lets use Mendel's experiment to work this out. Lets say that the genotypes for the yellow seeds are YY and GG for the green ones for the parental generation. You have to show two letters, with each letter representing an ...
Wednesday, January 23, 2013 at 9:40pm

History
Are these right? What approach did European settlers in America often take toward their physical enviroment? ---Mostly the eviroment was something to exploit, trees became lumber, land became developed land. What was the goal of the erie canal project? ---To connect the great ...
Wednesday, January 23, 2013 at 2:50pm

Physical Science 8th grade
How does metallic bonding contribute to Luster, Heat conductivity, Ductability, and malleability?
Tuesday, January 22, 2013 at 9:21pm

math
What vocabulary term causes iron to rust (Evaporation, condensation, chemical change or physical change)?
Tuesday, January 22, 2013 at 7:37pm

physical
v=ωR=2.08•0.25 =… (m/s)
Tuesday, January 22, 2013 at 4:59pm

physical
v=ωR=2.08•0.25 =… (m/s)
Tuesday, January 22, 2013 at 4:58pm

Intro to Physical Science
*How do I figure the Velocity.....
Tuesday, January 22, 2013 at 4:19pm

Intro to Physical Science
Iunderstand that KE=1/2mv^2 and PE=mgh;however, I do I figure the Velocity when only the mass and the height is given...
Tuesday, January 22, 2013 at 4:18pm

Intro to Physical Science
A 3-kg stone is dropped from height of 100 m. Find its kinetic and potential energies when it is halfway to the ground.
Tuesday, January 22, 2013 at 4:07pm

physical
A wheel has radius of 0.25 m rotating at 2.08 rad/s. What is the tangential speed of a particle at its edge
Tuesday, January 22, 2013 at 2:30pm

physical sciences
when the angle between them is zero
Tuesday, January 22, 2013 at 9:04am

physical sciences
two forces of 5n and 7n respectively act on an object. What will the resultant of the two vectors be at maximum??
Tuesday, January 22, 2013 at 2:32am

Physical Science
The distance from earth to the sun is 1.5x10 to the 11th power minutes and light travels at a speed of 3.0x10 to the 8th power m/s. How long does it take sunlight to reach the earth? Give answer in minutes and seconds.
Monday, January 21, 2013 at 9:26pm

Physical Science
What is the volume of a piece of platinum (ñ = 22.6 g/cm3) that has a mass of 0.35 kg?
Saturday, January 19, 2013 at 9:19pm

physical education
http://writingcenter.unc.edu/handouts/li​terature-reviews/ http://guides.library.ucsc.edu/write-a-l​iterature-review
Saturday, January 19, 2013 at 7:40pm

physical education
what is a literature review?
Saturday, January 19, 2013 at 7:36pm

physical science
If you dissolve 25.0g og sugar in 150cubic cm of water, what is the concentration in g/cm3 g/10cm3 g/10cm3
Saturday, January 19, 2013 at 3:47pm

Stadistics
Select the most appropriate study design for each of the following questions. (Note: All study design options may not be used and each design option can be used more than once. 1. A study is done to examine the association between a mother’s education and risk of a ...
Saturday, January 19, 2013 at 10:29am

Microbiology
Discuss some of the physical and chemical factors involved in the composition, and in the preparation, of a culture medium. Nutrient ingredients: ________________________________________​___________________ ___________ pH and buffering: ...
Friday, January 18, 2013 at 9:40pm

Chemistry
physical chemist
Friday, January 18, 2013 at 6:42pm

BUSINESS
You are the owner of a mid-size business that sells medical devices to hospitals, clinics, and physicians. Your products include implantable devices (pacemakers) and equipment used for therapeutic applications such as dialysis, monitoring of blood sugars, and physical therapy ...
Friday, January 18, 2013 at 12:49am

Please help -biology
Because they both have different bonds. Water contains stable O-H bonds, whereas hydrogen peroxide contains a much less stable O-O bond as well. Because there is an extra bond in hydrogen peroxide, the molecule as a different geometry than the water molecule. This already ...
Thursday, January 17, 2013 at 7:38pm

Please help -biology
why does water and hydrogen peroxide have different chemical and physical properties
Thursday, January 17, 2013 at 7:37pm

Biology
why does water and hydrogen peroxide have different chemical and physical properties
Thursday, January 17, 2013 at 7:34pm

Biology
why does water and hydrogen peroxide have different chemical and physical properties
Thursday, January 17, 2013 at 7:12pm

physical science(chemistry)
Why can chemical methods not be used to determine the reaction rate at different stages of the reaction?
Thursday, January 17, 2013 at 3:14pm

physical sciences (motion in two dimensions)
Start by solving for the height the stone reaches at the top of its trajectory. You can use the kinematic equation Vf^2=Vi^2+2gd where g is the acceleration due to gravity (I used 9.8) and d is the displacement. Knowing that the velocity in the y direction is 0 m/s when the ...
Thursday, January 17, 2013 at 3:03pm

physical sciences (motion in two dimensions)
John stand at the top of a 30m building. He throws a stone upwards with a speed of 5m/s. Calculate. (1)how long the stone is in the air. (2)the maxi mum height the stone reaches the ground?
Thursday, January 17, 2013 at 2:14pm

PHYSICAL SCIENCE
I bet when they are in the same direction.
Thursday, January 17, 2013 at 1:25pm

PHYSICAL SCIENCE
TWO FORCES OF 5N AND 7N RESPECTIVELY ACT ON AN OBJECT.WHEN WILL THE RESULTANT OF THE TWO VECTORS BE AT A MAXIMUM?
Thursday, January 17, 2013 at 12:14pm

Physical sciences
What is the solvent of a cup of tea in homogeneous
Thursday, January 17, 2013 at 12:10pm

Chemistry
What are the physical propertise of Air
Thursday, January 17, 2013 at 8:38am

7th grade science ASAP
1. How many chromosomes do human sex cells have? (1 point) 22 43 46 23 2. The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point) genotype; phenotype genome...
Wednesday, January 16, 2013 at 8:55pm

7th grade science
1. How many chromosomes do human sex cells have? (1 point) 22 43 46 23 2. The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point) genotype; phenotype genome...
Wednesday, January 16, 2013 at 8:21pm

7th grade science ms sue please
1. How many chromosomes do human sex cells have? (1 point) 22 43 46 23 2. The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point) genotype; phenotype genome...
Wednesday, January 16, 2013 at 8:17pm

6th grade s.s forgot textbook in locker!!!!
Need help immediatly!!! If someone already posted please still post! And I'm not doing this becuze I'm lazy but becuze I forgot my textbook in my locker and there's nothing on the internet to help!!! TOPIC: NORTHERN EUROPE 1.What river makes london a center for ...
Wednesday, January 16, 2013 at 6:44pm

health
1. Which is an emotion that people often use to protect themselves? (1 point) Happiness Sadness Anger Grief 2. Which statement is NOT true? (1 point) Some people do not have stress Stress is normal and can be positive or negative Over a long period of time, stress can harm ...
Wednesday, January 16, 2013 at 6:17pm

statistics
Select the most appropriate study design for each of the following questions. (Note: All study design options may not be used and each design option can be used more than once. 1. A study is done to examine the association between a mother’s education and risk of a ...
Tuesday, January 15, 2013 at 1:46am

8th grade physical sience
Giyckguvgkjgvjkkvjg
Monday, January 14, 2013 at 11:01pm

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