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September 20, 2014

Homework Help: Science

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Recent Science Questions

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science
3.what hormone stimulates the thickening of the endometrial tissue? 4.Describes what occurs to the follicle around day 13 and 14 ? what is this process called ?
Friday, February 28, 2014 at 10:44pm

science
1.Approximately how long (in days)is the female reproductive cycle?? Describe the structure that is 2.illustrated at the bottom of the diagram .What is it called ?
Friday, February 28, 2014 at 10:43pm

science
Explain the difference between the ovarian cycle and the menstrual cycle ??
Friday, February 28, 2014 at 10:34pm

science
4. a scientist exams a sample of an object from the solar system . there is evidence that the object included ice . the sample most likely comes from a(n) ( 1point ) a . Asteroid b. comet c dwarf planet d meteroroid
Friday, February 28, 2014 at 9:34pm

science
Which statement is true regarding the cost of climate change adaptation discussed in the text? (Points : 1
Friday, February 28, 2014 at 9:19pm

Science
2. Which step in the nitrogen cycle is accelerated at the beginning of the eutrophication process? (1 point) A) denitrification B) nitrogen fixation C) producer uptake of nitrogen*** D) consumer decomposition Am I correct?
Friday, February 28, 2014 at 7:39pm

Science
A scientist is trying to determine the identity of an element. It is highly reactive in water and forms an ionic bond with chlorine. It is also very shiny. The element is most likely 1. from group 17 2. from group 1 3. from group 15 4. a noble gas 3?
Friday, February 28, 2014 at 2:02pm

Science
To form an oxygen molecule (O2), two oxygen atoms share two pairs of electrons. What kind of bond is shown by this? Select all which apply. Ionic Bond Single Bond Double Bond Covalent Bond Triple Bond C and D?
Friday, February 28, 2014 at 1:38pm

Science
What is true about the element francium (Fr, atomic number 87)? Choose all that apply. A) It has seven valence electrons. B) It is likely to form ionic bonds. C) It is in Period 7. D) It is nonmetal. E) It is a metal. I think it is B, C, and E?
Friday, February 28, 2014 at 12:36pm

Science please help
what do we mean when we say that atoms bond? What particles in an atom are responsible for bonding? Table sugar or sucrose is a compound that has the chemical formula C12 H22 and O11 would another chemical made of the same elements still be considered to be sucrose? why or why...
Friday, February 28, 2014 at 10:25am

science
the astronauts can live for long periods of time in a space station? my answers is yes.
Friday, February 28, 2014 at 7:53am

SCIENCE
Will someone please help me find information on facial reconstruction?
Friday, February 28, 2014 at 7:42am

Science
What would happen to an electric motor if the direction of the electric current in the armature did not change directions? Explain. I have read my textbook and googled it and I dint understand what would happen. Please help. Thank you
Friday, February 28, 2014 at 12:52am

Science 3 quick questions
what do we mean when we say that atoms bond? What particles in an atom are responsible for bonding? Table sugar or sucrose is a compound that has the chemical formula C12 H22 and O11 would another chemical made of the same elements still be considered to be sucrose? why or why...
Friday, February 28, 2014 at 12:45am

Science
1. Which of these statements is TRUE? A.The nucleus gives the cell its shape. B. Chloroplasts make food for animal cells. C. Animal cells have many different shapes. D. A plant cell can become a blood cell. C
Thursday, February 27, 2014 at 10:16pm

Science
1. Which of these is NOT made of cells? a. a rock b. an ant c. moss d. a piece of wood A
Thursday, February 27, 2014 at 9:56pm

science
why did most scientists reject wegener's theory?
Thursday, February 27, 2014 at 8:33pm

science
Explain how the concentration of hydronium ions and hydroxide ions are related to pH.
Thursday, February 27, 2014 at 7:21pm

Science
#1. Kilometers per hour describes the speed of an object. ture false **** #2. Which of the following reference points would allow you to observe the speed of a car that you are traveling in? a) an airplane flying across the sky b) a car traveling next to you at the same speed ...
Thursday, February 27, 2014 at 7:15pm

Science - Please Check my Answer 2
My problem: One runner in a relay race has a 1.50 s lead and is running at a constant speed of 3.25 m/s. The runner has 30.0 m to run before reaching the end of the track. A second runner moves in the same direction as the leader. What constant speed must the second runner ...
Thursday, February 27, 2014 at 5:59pm

Science ~CHECK ANSWERS PLEASE~
#1. Kilometers per hour describes the speed of an object. ture false **** #2. Which of the following reference points would allow you to observe the speed of a car that you are traveling in? a) an airplane flying across the sky b) a car traveling next to you at the same speed ...
Thursday, February 27, 2014 at 5:56pm

Science - Please Check my Answer
My problem: A swimmer travels from the south end to the north end of a 30.0 m pool in 15.0 s and makes the return trip to the starting position in 19.0 s. What is the average velocity for the second half of the swim? My answer: 1.60 m/s to the south Please check! I will really...
Thursday, February 27, 2014 at 5:49pm

science
true or false. Astronau eat a lot of freeze-dries food because it is lighter and takes up lees room. my answer is true.
Thursday, February 27, 2014 at 5:07pm

Science - Please Help!
How can you tell the similarity between displacement and average velocity? It is for a part of a science problem. The lesson did not tell me how to do this. I have been stuck on that problem for a while. I also had my sister help me, and I looked things up for the problem. I ...
Thursday, February 27, 2014 at 5:05pm

Science
How can you tell the similarity between displacement and average velocity? I really do not know. Please help, and I will appreciate it. :)
Thursday, February 27, 2014 at 4:26pm

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

Science
Is planet X a Large asteroid?
Thursday, February 27, 2014 at 1:43pm

Science
Planet X is now consider a Kuiper belt object. True or False
Thursday, February 27, 2014 at 1:41pm

SCIENCE
20 . referring to the following chart , describe how the height of the tides changes from monday to the thursday 
Thursday, February 27, 2014 at 12:01pm

science
1.   Which statement is true about the following molecule?  (1 point)The molecule is composed of four atoms.The molecule contains oxygen atoms.The molecule is water.The molecule represents an element. 2.   A(n) _____________ is made up of two or ...
Thursday, February 27, 2014 at 10:29am

SCIENCE
14. under which of the following circumstances do neap tides occur? ( 1point ) A. during the new moon phrase b. when the sun’s pull is in the same direction as the moon’s pull c when the sun’s pull is at a right angle to the moon’s pull d. during the full ...
Thursday, February 27, 2014 at 9:10am

science
- Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
Thursday, February 27, 2014 at 7:00am

science
1. What is the half-life of Strontium-90? Explain your answer. Honestly I don't know how to get this answer. I've looked it up and stuff, but I just found the answer not how to know what it is. A link or explanation would be greatly appreciated. Thanks.
Thursday, February 27, 2014 at 1:08am

political science
what civil liberties are protected by the Georgia Constitution?
Thursday, February 27, 2014 at 12:52am

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

Science - Please Check This Answer
My problem is: When Christy takes her pet dog for a walk, the dog walks at a very consistent pace of 0.45 m/s. There are 20.1 m between the front of Christy’s house to the nearest dog park. How far will Christy’s dog have walked toward the park after 25 s? My answer ...
Wednesday, February 26, 2014 at 5:35pm

Science
1.   Which of the following is an example of matter?  (1 point) leaves shadows light from the sun sound 2.   Which of the following is an example of a chemical property of matter?  (1 point) ability to melt ability to freeze ability to ...
Wednesday, February 26, 2014 at 4:56pm

science
how does early operant conditioning strategies shape a person’s adult personality and if so, how
Wednesday, February 26, 2014 at 2:44pm

Environmental Science
In order to have positive or negative environmental impacts included in the GDP countries must place value on natural capital. Identify and describe one way to estimate the non-use value of natural capital.
Wednesday, February 26, 2014 at 2:21pm

SCIENCE
1. which of earth’s spheres contain most of its mass? A. atmosphere b. hydrosphere c. geosphere d. biosphere
Wednesday, February 26, 2014 at 2:13pm

Science
One gram of platinum has 3.09 × 1021 atoms, and each platinum atom has 78 electrons. How many electrons are contained in 4.00 g of platinum? The elemental charge is 1.6 × 10−19 C. Answer in units of electrons
Wednesday, February 26, 2014 at 12:49pm

Science
whats is a structure that was built with keeping costs low as the primary concern?Also, what is a structure (with the same function as the one above) that was built with no regard to cost: What are the difference between the two?
Tuesday, February 25, 2014 at 10:35pm

Science - Please check my answer
This is my problem: When Christy takes her pet dog for a walk, the dog walks at a very consistent pace of 0.45 m/s. There are 20.1 m between the front of Christy’s house to the nearest dog park. How far will Christy’s dog have walked toward the park after 25s? This ...
Tuesday, February 25, 2014 at 9:47pm

Science
Calculate the temperature found when 10kg of water at 100°C is mixed with 20kg of water at 40°C.
Tuesday, February 25, 2014 at 9:04pm

science
Vanadium has several oxidation states. write correct formulas for vanadium oxide and vanadium oxide.
Tuesday, February 25, 2014 at 8:45pm

science
Vanadium has several oxidation states. write correct formulas for vanadium (iii) oxide and vanadium (v) oxide.
Tuesday, February 25, 2014 at 8:45pm

Science
Calculate the heat required to raise the temperature of 10kg of copper from 20°C to 30°C (S.H.C. of copper = 400J/kg k).
Tuesday, February 25, 2014 at 8:26pm

Science
What are the types of position-time graphs? I really do not know the types. I have a problem that has a part that wants me to tell which graph the problem uses. Also, they didn't really talk about the types of graphs in the lesson. Please help, and will really appreciate ...
Tuesday, February 25, 2014 at 8:06pm

Science
Calculate the temperature found when 10kg of water at 100°C is mixed with 20kg of water at 40°C.
Tuesday, February 25, 2014 at 7:57pm

Science
How are volcanoes formed?
Tuesday, February 25, 2014 at 6:40pm

Science help ms sue.
Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the following statements about the solar system&#...
Tuesday, February 25, 2014 at 6:14pm

Science
Which one is longer mts (metre-tonne-second) or km (kilometre)?
Tuesday, February 25, 2014 at 5:15pm

science
which of the following body systems does NOT rely on the autonomic nervous system to stimulate involuntary events? A. Skeletal System B. Digestive System C. Circulatory System D. Respiratory System
Tuesday, February 25, 2014 at 1:22pm

English
What are the subordinate clause in these sentences? 1. Brett, who is a football star, is class president. 2. Bonnie, who is an artist, is also studying computer science. 3. The composer who wrote music comes form Germany. 4. My address book, which is bright red, is gone. 5. ...
Tuesday, February 25, 2014 at 11:48am

science
whats is a structure that was built with keeping costs low as the primary concern?
Tuesday, February 25, 2014 at 11:37am

science
at what altitude the value of g becomes 3/4 of its value on the surface of earth ?
Tuesday, February 25, 2014 at 10:34am

Science
How much 0.1 M KCl is needed to dissolve 10 gm of precipitate?
Tuesday, February 25, 2014 at 1:05am

CHEMISTRY - SCIENCE
What is the molality of a solution of 50g of I2 (iodine) dissolved in 130 mL of propane. Propane density .49g/mol.
Tuesday, February 25, 2014 at 12:12am

Science
Can someone ANSWER what's the difference between exothermic and endothermic reactions?
Monday, February 24, 2014 at 11:54pm

Science Please HELP!!!
This is just a practice. Most sex-linked genes are found on?
Monday, February 24, 2014 at 8:21pm

Science
This is just a practice. Most sex-linked genes are found on?
Monday, February 24, 2014 at 8:02pm

Science
A)Could you add marbles to a beaker filled with sand and get the same results? B)How does the Particle theory model explain that a substance can be solid while having spaces between its particles? C)Why does 50 ml of water and 5oml of sugar NOT produce 100 ml of a solution ...
Monday, February 24, 2014 at 7:00pm

CHEMISTRY - SCIENCE
A solution is 42% NaCl by mass. If 314 mL of H2O was used to create the solution, calculate the , mass of salt that was used.
Monday, February 24, 2014 at 6:08pm

newton law science
A tricycle has a mass of 5.5 kg and the force needed to stop it is 1.65N. What is the acceleration?
Monday, February 24, 2014 at 6:05pm

Science
Which of these statements about saltwater is correct? a. Saltwater freezes at a lowers temperature? b. Saltwater freezes at a higher temperature c. saltwater does not freeze at any temperature d. saltwater freezing point depends on the temperate of ocean floor***
Monday, February 24, 2014 at 3:44pm

history,geograph,life science,life orentation,mathematical literacy,english
1.with my school subjects which careers can i study and the entrance requirement for the particular courses and fees and accommodation cost.
Monday, February 24, 2014 at 3:07pm

science --- grams???
hey, me again... can u please inform me of the following? its important i know this since its very hard to find on google... how long does it take to freeze 1 gram of water? and how long does it take to freeze 2 grams of water? help asap would be greatly appreciated thanx in ...
Monday, February 24, 2014 at 2:23pm

Science One Question! Help ASAP!!!
Discuss your opinion of the consequences of artificial selection and the advantages and disadvantages of using genetic information in society. Use facts from your research to support your opinion. Cite the sources for your facts. HELP ASAP!
Monday, February 24, 2014 at 1:34pm

science
A tractor pulls a tree trunk across a horizontal piece of ground.if the force in the chain is 3000N and the chain forms an angle of 30˚ with the ground,culculate the force with which the tree I'd pulled across the ground
Monday, February 24, 2014 at 8:44am

Science
How would playing a game of soccer, baseball, or basketball be different if inertia didn’t exist?
Monday, February 24, 2014 at 3:07am

SCIENCE PLEASE HELP ASAP
the African plate is moving toward the Eurasian plate at a rate few centimeters per year. how will this are change in 100 million years. in your answer consider how continents will change and how the Mediterranean see will change
Monday, February 24, 2014 at 12:42am

Science
which of the following illustrates conduction as a mode of heat transfer 1 point a microwave oven produces electromagnetic waves that transfer to the food in the form of head leaving a metal spoon in a bowl of hot soup will make the spoon at a well pasta rises and falls with ...
Monday, February 24, 2014 at 12:13am

Science
Copper Oxide + Carbon -> Copper + Carbon Dioxide Calculate the mass of carbon needed to obtain 63.5g of copper from 79.5g of Copper Oxide
Sunday, February 23, 2014 at 5:43pm

Science
Copper Oxide + Carbon -> Copper + Carbon Dioxide Calculate the mass of carbon needed to obtain 63.5g of copper from 79.5g of Copper Oxide
Sunday, February 23, 2014 at 5:43pm

Computer science
Take two inputs from user: N - #items B - budget. There are S items, each with some price value, out of which user needs to select N items in such a way that total bill does not exceed B. The program should print all such combination of N products.
Sunday, February 23, 2014 at 4:30pm

8th grade science
How many (total) of each atom are there in the reactants and the products of cellular respiration? PLEASE HELP ME
Sunday, February 23, 2014 at 3:58pm

physical since,pure maths,life science
wt cn i become? except all de engineering thngs?plz help
Sunday, February 23, 2014 at 5:20am

math
A school spent $1,802 on 6 new microscopes for science classes. Each microscope cost the same amount of money. Find the cost of 1 microscope. Show your work.
Saturday, February 22, 2014 at 9:19pm

Science
1. Which type of eclipse would you expect to see if the moon passes directly between Earth and the sun? (1 point) a solar eclipse* a lunar eclipse a total lunar eclipse a penumbra 2. Which of the following statements about a lunar eclipse is true? (1 point) A lunar eclipse can...
Saturday, February 22, 2014 at 8:45pm

science
What is a mountains origin?
Saturday, February 22, 2014 at 7:41pm

Science
How will precession of the Earth's rotation axis affect the month when the Sun will be in the current constellation in the future?
Saturday, February 22, 2014 at 6:29pm

Science
In which constellation is the Sun currently located?
Saturday, February 22, 2014 at 6:26pm

science gr.8
A kicker strikes a ball with a strong force. a) Explain the evidence that shows the ball is not filled with liquid? b) Describe what is happening to the particles inside the ball? * chapter is about forces and pressure*
Saturday, February 22, 2014 at 5:50pm

Science data
Can your data be considered as graphs?
Saturday, February 22, 2014 at 5:43pm

Math
mike spends 2/3 of his time studying. on tuesday spends 1/6 of his time studying for his science test. what is the value of the combine time Mike studied for his science test?
Saturday, February 22, 2014 at 11:31am

science
Two forces of 5 N and 12 N respectivlely act on the same point. Show how to determine the magnitude of the resultant by using the tail to head and tail to tail methods and pythagoras theorem.
Saturday, February 22, 2014 at 2:38am

Science - Start of Physics
Please help me with the following problem. Given below is the position-time graph representing motions of two runners, Nick and Ian. Use this graph to determine which runner has greater average velocity. I can't put the graph here, so the following should give you guys a ...
Friday, February 21, 2014 at 10:37pm

Science
How does the silly putty made up of glue gel differ from the silly putty made of soap in terms of texture ? How would the touch be different and why? Chemical structure? .....? Science:Chemistry - bobpursley, Friday, February 21, 2014 at 9:53pm Have you made the two masses? ...
Friday, February 21, 2014 at 10:04pm

Science:Chemistry
How does the silly putty made up of glue gel differ from the silly putty made of soap in terms of texture ? How would the touch be different and why? Chemical structure? .....?
Friday, February 21, 2014 at 9:43pm

Science - Start of Physics
I need help with the following: Given below is the position-time graph representing motions of two runners, Nick and Ian. Use this graph to determine which runner has greater average velocity. For this one, I know the answer is 2m/0s, but I don't know if they want me to ...
Friday, February 21, 2014 at 8:33pm

management science
Riverside Oil Company in eastern Kentucky produces regular and supreme gasoline. Each barrel of regular sells for $21 and must have an octane rating of at least 90. Each barrel of supreme sells for $25 and must have an octane rating of at least 97. Each of these types of ...
Friday, February 21, 2014 at 6:01pm

Accointing , Economics and Life Science
I was wanting to find out that with the subjects l got what type of career could l have
Friday, February 21, 2014 at 2:40pm

Science
Which of the following must be true about the structures of axons and muscle cells in order for nerve impulses to stimulate muscle contraction? a- Axons and muscle cells must both have structures that make and secrete the same small molecules. b- axons and muscle cells must ...
Friday, February 21, 2014 at 2:17pm

Science
Does a virus have to take over a host cell in order to reproduce?
Friday, February 21, 2014 at 2:16pm

science
explain why a suspension is concidered a heterogeneous mixture
Friday, February 21, 2014 at 12:04pm

science
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
Friday, February 21, 2014 at 11:38am

Science
An electric eel can generate a voltage of 600V across its body. The eel does this via a system of up to 6000 “electroplaques” inside its body. What is the average strength of the electric field in V/m inside the body of a 10cm wide eel?
Friday, February 21, 2014 at 5:50am

Science
In a fetal pig, what are the 4 lobes of the brain and their functions?
Friday, February 21, 2014 at 12:43am

science
Why the moon looks different at different times?
Thursday, February 20, 2014 at 10:48pm

Science
Which of the following must be true about the structures of axons and muscle cells in order for nerve impulses to stimulate muscle contraction? a- Axons and muscle cells must both have structures that make and secrete the same small molecules. b- axons and muscle cells must ...
Thursday, February 20, 2014 at 9:58pm

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