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July 29, 2014

Homework Help: Physical Education

Recent Physical Education Questions

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science
What are 4 examples of physical systems designed by people?
Monday, April 1, 2013 at 8:57pm

electronic,physical,science
A circuit that combines two or more signals is called a mixer. In this lab, your goal is to build a mixer that combines the signals generated by two voltage sources, V1 and V2, where: V1 is a 1 kHz square wave that varies between 0V and +1V, and V2 is a 5 kHz sine wave that ...
Saturday, March 30, 2013 at 10:58pm

7th Grade Sience
1. A person's belief that he or she needs a drug to feel good or function normally (1 point) addiction psychological dependence emphysema tolerance 2. A large, dome-shaped muscle below the lungs (1 point) trachea alveoli diaphragm emphysema 3. Smoke that is inhaled and ...
Thursday, March 28, 2013 at 2:46pm

Physical Science
Which part of an electric circuit resists the flow of charge when it changes electrical energy into other forms of energy? A. battery B. copper wires C. switch D. light bulb i've posted this before but it's getting buried. i dont think its A or B.
Tuesday, March 26, 2013 at 6:06pm

social studies!!!
Does anyone know ten DIFFERENT physical features of algeria( in africa) !! If anyone can give me them ur aa life saver"!
Tuesday, March 26, 2013 at 4:24pm

physical science
what is the electric force of attraction (in newtons) between a proton and an electron? assume the distance between them is 5*10 negetive11 meter
Tuesday, March 26, 2013 at 2:01pm

physical science
during a race a runner runs at a speed of 6 m/s. 2 seconds later she is running at a speed of 10 m/s. what is runners acceleration? show your work.
Tuesday, March 26, 2013 at 11:19am

engineering physical
An elevator with a man inside, of gross mass 500KG, starts moving upwards with a costant acceleration and acquires a velocity os 2m/s after travelling a distance os 3m.Find the pull in the cables during the accelerated motion. If the elevator, before stopping, moves with a ...
Tuesday, March 26, 2013 at 12:03am

Science
Are the following examples physical changes or chemical changes. Mixing yeast and sugar Dissolving sugar in water Slicing bread Baking bread Melting cheese
Monday, March 25, 2013 at 8:30pm

Physical Chemistry
An electron of wavelength 1.74*10-10m strikes an atom of ionized helium (He+). What is the wavelength (m) of the light corresponding to the line in the emission spectrum with the smallest energy transition?
Saturday, March 23, 2013 at 9:04am

physical science
What physical quantities are governed by the quantum numbers of an atomic electron?.
Friday, March 22, 2013 at 11:05pm

physical
A basketball player who is 2.0m tall is standing on the floor 10.0m from the basket,If he shoots the ball at a 40.0¤ angle witi the horizontal,at what initial speed must he throw so that it goes through the hoop without striking the backboard?The basket height is 3.05 m.
Friday, March 22, 2013 at 7:54pm

Physical science
Help Please . Aisha drops an antacid tablet in water and times how long it takes to dissolve. Which of the following will decrease the reaction rate? A.increasing water temperature B.decreasing water temperature C.using more water
Friday, March 22, 2013 at 6:49pm

physical science
Help please. Aisha drops an antacid tablet in water and times how long it takes to dissolve. Which of the following will decrease the reaction rate?
Friday, March 22, 2013 at 6:29pm

Science
Are compounds chemical or physical changes of matter?
Friday, March 22, 2013 at 11:48am

Physical Science (Ms. Sue)
Why does some friction occur with seemingly smooth surfaces?
Thursday, March 21, 2013 at 9:05pm

Physical Science
How is friction involved in sledding and skiing?
Thursday, March 21, 2013 at 9:01pm

physical science
A hot air balloon is rising upwards at a constant velocity of 5 m/s . When the balloon is 60 m above the ground , a sand bag is released from it and allowed to free fall . Ignore the effect of air resistance and assume that the balloon continues to move with the same constant ...
Thursday, March 21, 2013 at 3:07am

Physical sciences
What is the universal law?
Thursday, March 21, 2013 at 2:34am

physical
An electric field with a magnitude of 3.50 kN/C is applied along the x axis. Calculate the electric flux through a rectangular plane 0.350 m wide and 0.7 m long assuming that (a) the plane is parallel to the yz plane; (b) the plane is parallel to the xy plane; (c) the plane ...
Wednesday, March 20, 2013 at 4:29am

Physical Science
The transfer of heat that takes place because of the density difference in fluids is
Monday, March 18, 2013 at 9:54am

SOC 313
1. Motor and perceptual consequences of brain damage affect: (Points : 1) visual-spatial relations; vision and hearing; and bowel and bladder function memory; attention and concentration; and judgment speech and language personality change and affective response 2. Stephanie ...
Sunday, March 17, 2013 at 9:01pm

physical science
A 150-L water heater is rated at 8 kW .If 20 percent of its heat escapes, how long does the heater take to raise the temperature of 150 L of water from 10C to 60C?
Saturday, March 16, 2013 at 4:38am

Physical science
How to draw 5 kg block on an inclined plane that isat 40 degrees to the horizontal?
Friday, March 15, 2013 at 5:11pm

health Ms. Sue please
1. The body's functions are slowed when alcohol reaches where? (1 point) The stomach The heart The liver The brain 2. Which statement is NOT true? (1 point) Regular use of alcohol can lead to addiction. Alcoholism can be cured. Someone cannot cause someone else to drink. ...
Thursday, March 14, 2013 at 9:51pm

physical science
a bot throws a cricket ball witg an initial velocity of 5m.s from the edge of a tall building.it passes the edge of the building on its way down and strikes the ground below after 5seconds (neglect effects of friction. question1...how does the acceleration of the ball moving ...
Wednesday, March 13, 2013 at 2:51pm

physical science
a bot throws a cricket ball witg an initial velocity of 5m.s from the edge of a tall building.it passes the edge of the building on its way down and strikes the ground below after 5seconds (neglect effects of friction. question1...how does the acceleration of the ball moving ...
Wednesday, March 13, 2013 at 2:46pm

physical science
What difference is there between the downward velocities of the skydiver who jumped out of the helicopter (with no forward velocity) and the one who jumped out of a plane (with a forward velocity of 40 m/s)?
Wednesday, March 13, 2013 at 12:11am

Physical chemistry 2
50 ml of 0.02M acetic acid is titrated with 0.1M NaOH.Calculate the pH of the solution when 10ml of NaOH is added
Tuesday, March 12, 2013 at 12:41am

Physical Science
How do you calculate the number of grams of ice at 32 degrees celsius that can be melted by 1g of steam?
Monday, March 11, 2013 at 12:45am

Physical Science
How do you get the velocity of a roller coaster when you are only given 250.0kg and 2.000x10^4 Joules
Monday, March 11, 2013 at 12:41am

Physical Science
A 1.00 kg block of ice at zero degrees celsius is added to a picnic cooler. How much heat will the ice remove as it melts to water at zero degrees Celsius?
Sunday, March 10, 2013 at 11:05pm

Physical Science
Calculate the number of grams of ice at 32 celsius that can be melted by 1g of 100 degrees celsius steam
Sunday, March 10, 2013 at 11:03pm

Physical science
a 5.0 x 10^1g piece of a metal in thermal equilibrium with boiling water is removed and placed in 1.0 x 10^2g of a cooling water bath (specific heat= 1.00cal/g degrees celsius at 20.0 degrees Celsius . The final temperature of metal and the water bath is 28.0 degrees celsius ...
Sunday, March 10, 2013 at 10:19pm

Physical Science
A 250.0 kg roller coaster has 2.000 x 10^4 Joule of potential energy at the top of the hill , if the track is frictionless , what is the coasters velocity at the bottom of the hill?
Sunday, March 10, 2013 at 10:06pm

Physical science
How much work is required to stop a car that is 800.0 kg car that is traveling at 20.0 m/s?
Sunday, March 10, 2013 at 9:53pm

Physical science
How much work is required to stop a car that is 800.0 kg car that is traveling at 20.0 m/s?
Sunday, March 10, 2013 at 9:50pm

physical Science
The Mass Of A Minibus with The Driver is 1500 kg.the Driver Is Moving At A Speed Of 30 m.s When He Notices That The traffic light Ahead Have turned To red.he Applies A Force Of 9000N on the brake pedal. A)calculate his deceleration if the taxi is empty B)how far must he be ...
Sunday, March 10, 2013 at 5:51pm

Physical science
For magnitude of the force is 67n and force of friction is 34n
Sunday, March 10, 2013 at 3:10pm

science
name two physical properties of an object about which you can gather qualitative data
Sunday, March 10, 2013 at 2:34pm

Physical sciences
1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction 2 waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3 the force per unit ...
Friday, March 8, 2013 at 11:06pm

Physical sciences
1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction 2 waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3 the force per unit ...
Friday, March 8, 2013 at 11:05pm

Physical sciences
1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3 the force per unit ...
Friday, March 8, 2013 at 11:04pm

Physical sciences
1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3 the force per unit ...
Friday, March 8, 2013 at 11:01pm

physical
a car a starts from rest 305kg increase its equal to 10m/s in 2 second
Friday, March 8, 2013 at 11:33am

Social Studies
How did Nubia's physical features affect civilization in the region?
Thursday, March 7, 2013 at 8:42pm

physical
Suppose a sound of frequency 1200 Hz is emitted from a speaker 15 meters away from you. At YOUR location, the intensity is 1.0E-7 W/m2. Let me assume your eardrum has area 3E-5 m2. If the sound continues for 8 seconds, what total amount of energy is received by your ear?
Thursday, March 7, 2013 at 5:47pm

Management for Organizations
Would someone PLEASE check my answers..THANKS in advance!!! 1. Employee inventories and skills inventories are strategies for ________________________. (D) job design promoting-from-within external recruiting human resource planning 2. Which one of the following choices is not...
Thursday, March 7, 2013 at 11:40am

Please help check physical science!
Please help check my answers I really want to make a 100%! 1. A mechanical wave moves through a medium, which can be (1 point) A. a liquid. B. a solid. C. a gas. D. all of the above <-- This one 2. Which type of kind of wave causes the medium to vibrate only in a direction ...
Wednesday, March 6, 2013 at 10:26pm

English
Request for feedback on CAUSE essay. Please give input on below essay: “I ran three miles, staggered into the lobby, and took the elevator to my apartment, no use overdoing this exercise junk.” Janet Evonovich About 40% of Americans report that they never exercise, ...
Wednesday, March 6, 2013 at 3:29pm

Physical Science
A sedan weighing 4000 pounds travelling at 30mph collides head on with a compact car weighing 2000 pounds and travelling in the opposite direction at 45 mph. What is the resultant velocity of the combined vehicles?
Wednesday, March 6, 2013 at 3:34am

Physical science
When a crate slides down an incline at a constant velocity it is
Tuesday, March 5, 2013 at 10:00pm

chemistry
is putting gas in a vehicle a physical or chemical reaction
Tuesday, March 5, 2013 at 8:16pm

General Biology
Darwin used which of the following terms to describe the process by which those individuals that possess superior physical, behavioral, or other attributes are more likely to pass their traits to the next generation?
Tuesday, March 5, 2013 at 2:07pm

physical
Hey everyone... hoping I can get an answer soon... I have a PD/H/PE homework assignment on which we have to create an collage on Physical, Spiritual, Emotional, Social and Mental health. I am stuck on a definition for spiritual health, me not being a very big know-it-all in PD...
Tuesday, March 5, 2013 at 12:31am

physical chemistry
This question is about a lab called Heats of Ionic Reaction in my Physical Chemistry class. I need to know why there should be a large percentage error in deltaH4
Monday, March 4, 2013 at 8:16pm

physical science
Boyle’s law states that if you squeeze a fixed amount of a gas into a smaller volume, the pressure will increase. Explain why?
Monday, March 4, 2013 at 4:55pm

English
The assignment is to write a CAUSE paper on an addiction. There is to be three topic sentences with support, a thesis, an introduction and a conclusion. I obviously have left of my sources, and need to insert them. I would really appreciate some feedback and some help ...
Monday, March 4, 2013 at 2:22pm

physical science
Boyle’s law states that if you squeeze a fixed amount of a gas into a smaller volume, the pressure will increase. Explain why?
Sunday, March 3, 2013 at 2:36pm

physical science
10. A balloon has a volume of 0.5 L at 20°C. What will the volume be if the balloon is heated to 150°C? Assume constant pressure and mass.
Sunday, March 3, 2013 at 2:03pm

physical science
3. Atmospheric pressure at the top of Mt. Everest is about 150 mm Hg. That is why climbers always bring oxygen tanks. If a climber carries a 12.0 liter tank with a pressure of 35,000 mm Hg, what volume will the gas occupy if it is released at the top of Mt. Everest?
Sunday, March 3, 2013 at 2:03pm

physical science
3. Atmospheric pressure at the top of Mt. Everest is about 150 mm Hg. That is why climbers always bring oxygen tanks. If a climber carries a 12.0 liter tank with a pressure of 35,000 mm Hg, what volume will the gas occupy if it is released at the top of Mt. Everest?
Sunday, March 3, 2013 at 2:03pm

physical science
1. Boyle’s law states that if you squeeze a fixed amount of a gas into a smaller volume, the pressure will increase. Explain why in your own words.
Sunday, March 3, 2013 at 2:02pm

physical science
Hypothesize how the pH of white vinegar would change if an ammonia solution was added to it a drop at a time. White vinegar has a pH of 3.1
Saturday, March 2, 2013 at 4:33pm

physical
A 70-kg man and a 50-kg woman are in a 60-kg boat when its motor fails. The man dives into the water with a horizontal speed of 3m/s in order to swim ashore. If he changes his mind, can he swim back to the boat if his swimming speed is 1m/s? If not, can the woman change the ...
Saturday, March 2, 2013 at 3:28am

physical
When 1 g of gasoline is burned in an engine, about 48 kJ of heat is produced. How much mass is lost in the process? Do you think this mass change could directly measured
Saturday, March 2, 2013 at 2:48am

physical science
You wish to heat 30 kg of water from 60°C to 80°C. How many kcal of heat are necessary to do this? To how many kJ does this correspond?
Saturday, March 2, 2013 at 12:26am

Physical Science
ok so i keep getting one wrong on a 4 question test and failing so can someone tell me what im getting wrong 1. What causes an electric current in a wire? A. Electric fields cause atoms to move in the wire. B. Electrons flow because of electrical attraction and repulsion. C. ...
Friday, March 1, 2013 at 5:03pm

world geo
Explain how Western Europe's physical geography affects its climate, settlement patterns, culture, and economy
Friday, March 1, 2013 at 10:02am

Physical Science
what will have a greater effect on the intensity of a sound, doubling its power or halving its distance? Explain your answer.
Thursday, February 28, 2013 at 11:25am

physical science
You are at a concert and you are located 91.2-m from the speakers. The frequency belting from the speakers are 291-Hz, if it takes 0.230-sec for the sound to reach your location what is the sounds wavelength?
Thursday, February 28, 2013 at 9:37am

physical science
You are at a concert and you are located 95.9-m from the speakers. The frequency belting from the speakers are 257-Hz, if it takes 0.503-sec for the sound to reach your location what is the sounds wavelength?
Thursday, February 28, 2013 at 9:36am

physical science
You are at a concert and you are located 97.5-m from the speakers. The frequency belting from the speakers are 216-Hz, if it takes 0.181-sec for the sound to reach your location what is the speed of sound in this facility?
Thursday, February 28, 2013 at 9:35am

Physical Science
Find the change in the force of gravity between two planets when their masses remain the same but the distance between them is increased by 10 times.
Wednesday, February 27, 2013 at 11:19pm

physical
A small dog is trained to jump straight up a distance of 1.2 m. How much kinetic energy does the 7.2-kg dog need to jump this high? (The acceleration due to gravity is 9.8 m/s².)
Tuesday, February 26, 2013 at 7:01pm

physical
what are the limitations on practical interstellar travel for both manned and unmanned craft and what are some proposed ways to deal with them in the future?
Tuesday, February 26, 2013 at 6:05pm

physical
A computer is reading data from a rotating CD-ROM. At a point that is 0.036 m from the center of the disc, the centripetal acceleration is 120 m/s2. What is the centripetal acceleration at a point that is 0.056 m from the center of the disc?
Sunday, February 24, 2013 at 1:03am

Physical Science
A car and a truck are on the highway. Both need to accelerate at 7 m/s2 in order to avoid an accident. a. Find the force acting on the car, which has a mass of 408 k b. Find the force acting on the truck, which has a mass of 2,100 kg.
Wednesday, February 20, 2013 at 11:11pm

Physical Science
A force of 20 N is applied to a box of books with a mass of 4kg. Find the acceleration of the box of books.
Wednesday, February 20, 2013 at 11:03pm

Data Mangement- Math
The diagram represents the computer network between the department offices in a high school. The network can send data from one computer to another using any number of intermediate connections, but the data can pass through each connection only once. How many routes are there ...
Wednesday, February 20, 2013 at 7:46pm

Physical science
If a ball is thrown straight up at a speed of 24.7 m/s, for how long of a time will it continue to rise before it starts to fall back down?
Tuesday, February 19, 2013 at 10:18pm

Physical Science- Balance Equations
Hi! Can someone please balance these equations, please?! I'm having major trouble! Thank you! HCl (aq) + NaHCO3 (aq) ¨ HBr (aq) + NH3 (aq) ¨ LiHCO3 (aq) + HI (aq) ¨
Monday, February 18, 2013 at 7:10pm

psychology
Particular factors encourage people to be drawn into liking one another. In this context, the reciprocity of liking effect is primarily associated with A. physical attractiveness. B. propinquity. C. similarity. D. exposure.
Monday, February 18, 2013 at 4:38pm

Basketball Current Event
Dear Tutor, I have to do a current event for Physical Education on basketball. My problem is that I don't know anything about basketball and my coach wants it to be on a famous basketball team that has recently played. Can you help me find an article. I am really dumb when...
Monday, February 18, 2013 at 2:57pm

Basketball Current Event
Dear Tutor, I have to do a current event for Physical Education on basketball. My problem is that I don't know anything about basketball and my coach wants it to be on a famous basketball team that has recently played. Can you help me find an article. I am really dumb when...
Monday, February 18, 2013 at 1:54pm

algebra
a physical education teacher was getting ready for gym class one day . he measured the circumference of the basketball to be 9 inches when it is filled with air . he then went on to pose the following question to his classes : use 3.14 A ) how much material is needed to make ...
Monday, February 18, 2013 at 12:13pm

Physical Science
A force of 60N used to push a chair across a room does 300J of work in half a minute. How far does a chair move?
Sunday, February 17, 2013 at 5:37pm

physical science
a scientist found a fossilized bison. using Carbon-14 dating, she found that the fossil was about 45,840 years old. Carbon-14 has a half-life of 5730 years. how many half-lives have passed?
Sunday, February 17, 2013 at 4:59pm

chemestry
Explain the physical significance of van der waals,parameters ?
Sunday, February 17, 2013 at 9:50am

physical science
sodium-24 has a half life of 15 hours,how much of a 50 gram sample will be left after 60 hours
Saturday, February 16, 2013 at 8:53pm

physical science
cobalt-60 has a half-life of 5.26 years, how much of a 500 gram sample will be left after 21 years
Saturday, February 16, 2013 at 3:53pm

Speech 09
I'm posting this question again I really need to know if i am right or wrong please help Place the correct letter next to the item that matches it. A. Physical Barrier B. Mental Barrier C. Cultural Barrier D. Empathic Listening E. Listening for Information F. Critical ...
Thursday, February 14, 2013 at 7:36pm

Education/Technology
To get instant feedback for assessment, such as physical education fitness, a music lab activity, or reading competency, students have been shown how to use A) scanners or punch cards. B) handheld computers or PDAs. C) desktop or laptop computers. D) webcams or digital cameras...
Thursday, February 14, 2013 at 6:21pm

physical sciene
Two 2.2 kg physical science textbooks on a bookshelf are 0.15 m apart. What is the magnitude of the gravitational attraction between the books?
Thursday, February 14, 2013 at 1:14pm

Speech
Listening to your friend sincerely as they tell you about their day ( empathic listening)? Not anderstanding because of accent ( cultural barrier)? Take notes in class and studying then so you can paraphrase the information for a test. (Academic listening) A me Janice ...
Wednesday, February 13, 2013 at 11:40pm

physical
Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 84 kg, and the mass of the woman is 68 kg. The woman pushes on the man with a force of 50 N due east. Determine the acceleration (magnitude ...
Wednesday, February 13, 2013 at 12:10pm

Physical Science
How many CH4 molecules are contained in a 50gram sample of CH4 gas?
Tuesday, February 12, 2013 at 9:34pm

physical sciences
A child throws a coin vertically downwards from a window of high building with an initial velocity of 15 m/s.Ignore the effect of air friction. Calculate vhow lonfg the coin falls
Tuesday, February 12, 2013 at 9:08am

Physical Science Help!
Can someone please help me balance these equations? Thank you for your time!! 1. NO + O2 ¨ NO2 2. NH4Cl + Ca(OH)2 ¨ CaCl2 + NH3 + H2O
Monday, February 11, 2013 at 5:51pm

intro to physical science
the specific heat of granite is 0.80 KJ/kg . c. I f 1.6 MJ of heat are added to a 100-kg granite statue of James Precott Joule that is originally at 18 C, what is the finale temperature of the statue
Monday, February 11, 2013 at 10:30am

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