Sunday
August 31, 2014

Homework Help: Science

Branches of Science

Recent Science Questions

Post a New Question | Current Questions

Science
Consider a neutral atom that has 17 electrons A.) how many protons does it have? B.) what is it's atomic number? C.) which element is it?
Tuesday, February 18, 2014 at 10:15am

science
mount twin peaks located in northern Vancouver Island erupted three million years ago and it has not erupted since then. Mouth twin Peaks is most liekly ? a) dormant b) active c) extinct d) stationary
Tuesday, February 18, 2014 at 8:01am

science
c ???
Tuesday, February 18, 2014 at 7:58am

science
what happens immediately before a volcano erupts ? a) magma collects in the mantle b) lava hardens to form volcanic rock c) expanding gases pushes magma through the pipe d) the temperature in the magma chamber decreases
Tuesday, February 18, 2014 at 7:57am

science
To locate the epicenter of an earthquake a seismologists must determine all of the following except ? a) the difference between arrival time of P and S waves b) seismographic locations data from the seismograph locations c) the distance from the epicenter to at least three ...
Tuesday, February 18, 2014 at 7:50am

science
a concave mirror has a radius of curvature of 0.4 m find the position and the size of the image of an object 0.2 m high placed 0.8 m infront of the mirror
Tuesday, February 18, 2014 at 4:43am

Science
What is the soft palate of a pig made of?
Tuesday, February 18, 2014 at 4:12am

Science
1. Consider a neutral atom that has 17 electrons A.) how many protons does it have b.) what is it's atomic number c.)which element is it 2. List the following for an atom with 33 protons and 42 neutrons a.) the name of the element b.) the atomic number C.)the number of ...
Monday, February 17, 2014 at 11:54pm

science
Astronomers study an asteroid that is moving quickly toward Jupiter. Which statement describes how the gravitational attraction between the asteroid and Jupiter will most likely change? A. The gravitational force will increase as the distance between the asteroid and Jupiter ...
Monday, February 17, 2014 at 9:04pm

science
Which statement best describes Newton’s Law of Universal Gravitation? A.Large objects, like Earth and the Sun, attract other objects everywhere in the universe. B.Gravity is a kind of magnetic force between objects and Earth. C.Gravity is the result of the curvature of ...
Monday, February 17, 2014 at 8:35pm

science
a consumer-producer relationship is best illustrated
Monday, February 17, 2014 at 8:11pm

Science
Acetylene gas c2h2 reaction cac2+2h2o. C2h2+Ca(oh)2 how many moles of cac2 needed to prepare 10.0 g c2h2 please show work and answer soon final question on big test review
Monday, February 17, 2014 at 6:18pm

science
TOSS EACH OBJECT A DISTANCE OF 2 METERS.A)METAL WASHER 1.5 B)PLASTIC DISK 34 C)ROCKS 16 D)WOODEN BLOCK 22. WHICH ONE IS CORRECT
Monday, February 17, 2014 at 4:52pm

science
A person who weighs 600 newtons on Earth would weigh only 100 newtons on the Moon. Which statement best explains why? A.The circumference of Earth is larger than that of the Moon. B.The density of Earth is greater than that of the Moon. C.The mass of Earth is greater than that...
Monday, February 17, 2014 at 4:43pm

Physical Science
In what direction does heat flow? Why do particles of matter transfer thermal energy in this direction?
Monday, February 17, 2014 at 4:42pm

science
How do two isotopes of the same element compare with each other? A.They have the same number of protons but a different number of electrons. B.They have the same mass number but a different number of protons. C.They have the same mass number but a different number of neutrons...
Monday, February 17, 2014 at 4:40pm

science
WHICH BLOCK WILL HAVE THE GREATEST CHANGE IN MOTION. A RED B BLUE C GREEN D YELLOW
Monday, February 17, 2014 at 4:39pm

science
WHICH BLOCK WILL HAVE THE GREATEST CHANGE IN MOTION
Monday, February 17, 2014 at 4:34pm

Ethics
1. If we eliminate free will completely, we would also be eliminating: A. the possibility of genetic bases for human behavior. B. the value of modern science. C. moral responsibility. D. excuses for criminal conduct. is it C 2.
Monday, February 17, 2014 at 4:33pm

science
WHICH OBJECT WILL REQUIRE THE MOST FORCE TO TOSS IT 2 METERS
Monday, February 17, 2014 at 4:21pm

science
Which experiment would most directly reveal the inertia of an object? A.weighing a bottle on a digital scale B.moving a soda can back and forth to determine whether it is empty C.dropping a ball of paper and measuring how fast it falls D.throwing a ball to see how far it goes
Monday, February 17, 2014 at 4:14pm

science
For which surfaces will fricion be greatest when a block of wood slides across it
Monday, February 17, 2014 at 4:14pm

science
Which statement best describes the inertia of an object? A.Inertia is the tendency of an object to resist a change in its motion. B.Inertia is the weight of an object. C.Inertia is what determines how fast an object will fall. D.Inertia measures how hard an object will hit ...
Monday, February 17, 2014 at 4:14pm

Ethics
1. Modern-day determinism tends to be based in: A. religious teachings. B. science. C. the idea of predestination. D. intentionalism. is it B 2. Which of the following is theorized to play an important role in imitative behavior and our capacity to relate to and empathize with...
Monday, February 17, 2014 at 4:13pm

science
How can atoms of two elements that have a different number of protons have the same charge? A.by also having a different number of neutrons B.by also having a different number of electrons C.by having the same mass number D.by being the same size atoms
Monday, February 17, 2014 at 4:09pm

Life.science
In the moss, the sporophyte is sometimes referred to as a 'semi-parasite'. Explain why this is so.
Monday, February 17, 2014 at 3:34pm

Science
Which statement best describes the composition of magma?
Monday, February 17, 2014 at 2:22pm

Physical Science
What form of energy provides power for a gas stove? That's Chemical Energy, right?
Monday, February 17, 2014 at 12:34pm

Phsical Science
Which one is the best explanation of energy? A. making transformations B. the ability to do work C. conservation of power D. measuring joules I think it is B.
Monday, February 17, 2014 at 12:29pm

Physical Science
No system is completely closed off from its surroundings. Which represents a system that is almost completely closed? A. a capped soda bottle B. a wood-burning fireplace C. a washing machine D. a pot of boiling water I believe it is A.
Monday, February 17, 2014 at 11:09am

Physical Science
Which has characteristics similar to a scientific model? A. a toy train B. a deep-sea submersible C. a planetary rover D. the Brooklyn Bridge
Monday, February 17, 2014 at 10:55am

Science
Which of the following describes how matter moves between producers, consumers, and decomposers in an ecosystem A) One-way flow from producers to consumers to decomposers B) One-way flow from decomposers to consumers to producers C) Cyclic flow from producers to consumers to ...
Monday, February 17, 2014 at 9:42am

science
A Boy of mass 25 kg climbs atop a playground slide of height h= 3 m. When the boy slides down the inclined board, the work done to overcome friction is 550 Joule. What is the boy’s speed before he touches the ground.
Sunday, February 16, 2014 at 11:59pm

Physical Science
can I get some help with these questions. im not sure on these ones During the stage of internal combustion engine operation in which the piston rises and compresses the fuel in the combustion chamber, a. both the intake and exhaust valves are open b. the intake valve is open ...
Sunday, February 16, 2014 at 11:00pm

Science
Can an element be separated from a compound? Can an element form a compound? The reaction of zinc metal and hydrochloric acid creates hydrogen gas, an element. if we create this element in a tube what property of this element requires us to keep the tube upside down? Water has...
Sunday, February 16, 2014 at 7:19pm

Grammar Answer Check
Identify the underlinded conjunctions in the following excerpts from "The Interlp[ers" as "coordinating," "correlative," or "subordinating." 1. ..a man stood one winter night watching _and_ listening, _as though_ he waited for some beast...
Sunday, February 16, 2014 at 7:16pm

science
A lever scale is balanced with a beaker filled of air on one side. The scale is very sensitive and can easily measure a change in weight of about 1/2 mg. What happens If you put your finger carefully into the beaker without touching the glass?
Sunday, February 16, 2014 at 3:46pm

science
if you have two samples of the same volume. the mass of sample A is higher than that of sample B. which sample has the greatest density?
Sunday, February 16, 2014 at 3:08pm

Science
These questions refer to tides. 1. Why are vertical clearances of bridges along navigable waterways given as heights in feet above mean(average) water height? 2. Why would knowledge of tides be of any importance in a military landing action?
Sunday, February 16, 2014 at 2:23pm

physical science
the diameter of the planet saturn is 10 times that of the earth but the mass of the planet is only 90 times greater than that of the earth.what is the gravitational acceleration or number gs you will feel on saturn?(8.8m.s-2)
Sunday, February 16, 2014 at 12:27pm

physical science
calculate the weight of a man with a mass of 80.0kg on the surface of the moon 156N?
Sunday, February 16, 2014 at 12:18pm

Science
Classify reaction as addition, displacement, or decomposition: Al(s)+NaOH(aq)=Al(OH)3(s)+Na+(aq)
Sunday, February 16, 2014 at 11:46am

Physical science
A box a weight of 100 N rests on a horizontal floor.The coefficient of static friction is 0,40 and the coefficient of kinetic friction is 0,30.DETERMISE THE FRICTIONAL FORCE ACTING ON THE BOX IF A HORIZONTAL FORCE IS APPLIED WITH A MAGNITUDE OF 0 N
Sunday, February 16, 2014 at 10:53am

science
A ramp 20m long slopes down 1.2m to the edge of a lake. A force of 300N is needed to pull a boat on a trailer at constant speed up the ramp when they are clear of the water. If friction is negligible, what is the combined mass of the boat and trailer. Hints: Calculate MA of ...
Sunday, February 16, 2014 at 10:04am

Science
HIV is a retrovirus. Which of the following processes does it use to synthesize a DNA strand using its own RNA genome as a template? *reverse translation *reverse transcription-------- *translation *transcription
Sunday, February 16, 2014 at 9:17am

Science
These questions refer to tides. 1. Why are vertical clearances of bridges along navigable waterways given as heights in feet above mean(average) water height? 2. Why would knowledge of tides be of any importance in a military landing action?
Saturday, February 15, 2014 at 11:33pm

8th grade science
Explain how the sun's temperature will change over time as it ages.
Saturday, February 15, 2014 at 3:17pm

physical science
A frog jumps at the angle of 60 degrees to horizontal with initial velocity of 10.0m/s 1. calculate velocity Voy of the frog 2 calculate acceleration ax of the frog
Saturday, February 15, 2014 at 9:56am

physical science
A frog jumps at the angle of 60% to horizontal with initial velocity of 10.0m/s 1. calculate velocity Voy of the frog 2 calculate acceleration ax of the frog
Saturday, February 15, 2014 at 9:56am

Science
in a cathode ray tube, the number of electrons that reach the florescent screen is controlled by the A. anode b. cathode. c. deflecting plate d. grid
Friday, February 14, 2014 at 9:20pm

Math
Everyone in Andy’s class has to do a science project. Out of the 20 students, 80% have completed their project. How many students still need to finish their projects (got 4 students)
Friday, February 14, 2014 at 6:46pm

Physical Science Need Help Quick PLEASE:)
A polo player hits a ball with a mass of 0.42 kg with a force of 7.35 Newtons. How does the force the polo player's mallet exerted on the ball compare to the force the ball exerted on the mallet? A. The force of the mallet on the ball is equal in magnitude and opposite in ...
Friday, February 14, 2014 at 12:17pm

Physical Science
An Olympic sprinter can go from a state of rest to 11 meters per second in 10 seconds. What is the average acceleration of the sprinter?
Friday, February 14, 2014 at 11:35am

Science
How do you figure the average speed of something? What is the formula is what I really need. :)
Friday, February 14, 2014 at 11:14am

Science 8th Grade
What was the hiker's average velocity? Distance = 6km West Starting Time = 9:45 Ending Time = 10:45 A. 4.0 km/h south B. 0.10 km/h north C. 10 km/h south west D. 6 km/h west
Friday, February 14, 2014 at 11:08am

science
What is the main consideration when choosing an appropriate outlet box?
Thursday, February 13, 2014 at 9:30pm

physical science
19. (2 points) Ball 2, with a mass of 30kg, is moving to the left at 10m/s. With what velocity should Ball 1, with a mass of 10kg, move to the right and collide with Ball 2, so that Ball 1 rebounds with a velocity of 30m/s, and Ball 2 with a velocity of 10 m/s, after the ...
Thursday, February 13, 2014 at 8:33pm

Science
A plant deprives of light dies. Which of the following best explains why this happens? 1-The plant needs light to make it's food 2-Light allows the plant to make food for other organisms 3-Without light, the plant has no signals to be able to grow* 4-Plants need light to ...
Thursday, February 13, 2014 at 7:20pm

Science
Cycads, ginkgo, gnetophytes, and conifers are all gymnosperms. The plant shown is a ---
Thursday, February 13, 2014 at 5:31pm

Science
placental mammals develop what?
Thursday, February 13, 2014 at 4:35pm

Science Please HELP!!!
The sporophyte generation produces spores that grow into a(n)?
Thursday, February 13, 2014 at 4:31pm

science
I need help finding a PowerPoint with the importance of installation of actuator blocks on CH-47F aircraft or MH47 aircraft please.
Thursday, February 13, 2014 at 2:53pm

Science ( Need help really bad Please!)
An object's weight is dependent upon its location in the universe. Why is this true? A. This is true because weight is the magnitude of gravitational force acting on an object, and since gravitational force varies in different places in the universe, weight also varies. B...
Thursday, February 13, 2014 at 1:26pm

Physical Science
An Olympic sprinter can go from a state of rest to 11 meters per second in 10 seconds. What is the average acceleration of the sprinter?
Thursday, February 13, 2014 at 12:10pm

science
A lever scale is balanced with a partially filled glass of water on one side. Will the balance be upset (and if so how?) if you put your finger carefully into the water without touching the glass? What happens if the beaker is filled with air instead of water?
Thursday, February 13, 2014 at 10:37am

Science
how do you draw a bohr diagram of a atom and a ion and how are they different????
Wednesday, February 12, 2014 at 10:22pm

Science Mixture
Could you use the filtration method to separate a sugar water solution? Why or why not?
Wednesday, February 12, 2014 at 7:19pm

science
Which of the following was not considered to be strong evidence for the wave nature of light? refraction, diffraction, interference, or polarization.
Wednesday, February 12, 2014 at 1:30pm

science
14. Chemical runoff from fields, oil spills, and erosion is the major source of (1 point) a. air pollution b. water pollution c. hydropower d. renewable energy 15. Which compound causes the depletion of earth's ozone layer? (1 point) a. ultraviolet radiation b. ...
Wednesday, February 12, 2014 at 12:55pm

SCIENCE
AN INDEPENDENT LEARNER NEED TO BE A ___
Wednesday, February 12, 2014 at 3:20am

science- physics
when a wave strikes a boundary that is less dense than the original wave medium, the wave comes back a) upright b)inverted thank you!
Tuesday, February 11, 2014 at 9:25pm

Physics
In Larry Niven's science-fiction novel Ringworld, a rigid ring of material rotates about a star. The inhabitants of this ring world live on the starlit inner surface of the ring (where it is always noon). The tangential speed of the ring is 1.25x10^6 m/s, its radius is 1....
Tuesday, February 11, 2014 at 8:54pm

Science
Some gardening books tell people to water their plants during the morning or the evening instead of during the sunniest , hottest part of the day . Why do you think books say this
Tuesday, February 11, 2014 at 7:51pm

Science 7
Basidiomycota (Mushrooms and Toadstools) 28. Where do spores form & what are the spore-forming structures called?
Tuesday, February 11, 2014 at 6:16pm

Science 7
Zygomycota 12. Vertical hyphae produce what structures? 13. What is the function of these structures? Sexual Reproduction In Zygomycota 18. What type of benefit can there be for the new strain? 19. What are the two hyphae called that are involved in sexual reproduction? 20. ...
Tuesday, February 11, 2014 at 6:16pm

Science 7
Basidiomycota (Mushrooms and Toadstools) 28. Where do spores form & what are the spore-forming structures called?
Tuesday, February 11, 2014 at 5:49pm

Science 7
Zygomycota 12. Vertical hyphae produce what structures? 13. What is the function of these structures? Sexual Reproduction In Zygomycota 18. What type of benefit can there be for the new strain? 19. What are the two hyphae called that are involved in sexual reproduction? 20. ...
Tuesday, February 11, 2014 at 5:42pm

science
Which of the following is not among the advantages of generating nuclear energy? It does not release carbon dioxide into the atmosphere. It does not require a specialized process or involve any risk It does not release chemicals that cause acid rain It does not contribute to ...
Tuesday, February 11, 2014 at 5:27pm

Science
Is the following statement true or false? Solar panels collect energy from the sun that can then power a lamp in a home.
Tuesday, February 11, 2014 at 5:23pm

Science
Zygomycota; 12. Vertical hyphae produce what structures? 13. What is the function of these structures? Sexual Reproduction In Zygomycota; 16. Sexual reproduction is only possible in Rhizopus if what is true?
Tuesday, February 11, 2014 at 5:02pm

science
4.which of the following describes the use of a renewable form of energy? (1 point). a. using natural gas to heat a house b. using a windmill to grind grain c. using petroleum to run a car d. using coal to generate electricity
Tuesday, February 11, 2014 at 4:50pm

Science
Fungi 7. Why are fungi classified as heterotrophs like animals? 9. Explain how an absorptive hetertroph feeds?
Tuesday, February 11, 2014 at 4:26pm

Science! just one question! help ASAP plzzz
True or False: Plants continue to grow throughout their lives by producing new plant material. This sentence is __________ because…
Tuesday, February 11, 2014 at 4:17pm

Science~!
Harvesting energy from water, wind, and geothermal vents requires the use of (1 point) aquaculture engines mines turbines***
Tuesday, February 11, 2014 at 3:45pm

Science only one question...help plzz!
True or False: Plants continue to grow throughout their lives by producing new plant material. THANK YOU!
Tuesday, February 11, 2014 at 3:37pm

physical science
what is the velocity of ironman if he travels up 2,000 meters in 8.6 seconds
Tuesday, February 11, 2014 at 2:57pm

Science~!
Harvesting energy from water, wind, and geothermal vents requires the use of (1 point) aquaculture engines*** mines turbines Which of the following is not among the advantages of generating nuclear energy? (1 point) It does not release carbon dioxide into the atmosphere. It ...
Tuesday, February 11, 2014 at 1:28pm

physical science
Two force vector,a and b act on an object in the x direction and b acts on a y direction. Use words and diagram to explain how you can find the resultant force acting on the object by using the tail-to-head method
Tuesday, February 11, 2014 at 1:25pm

Science
Harvesting energy from water, wind, and geothermal vents requires the use of (1 point) aquaculture engines*** mines turbines Which of the following is not among the advantages of generating nuclear energy? (1 point) It does not release carbon dioxide into the atmosphere. It ...
Tuesday, February 11, 2014 at 12:58pm

Science
Which of the following describes how matter moves between producers, consumers, and decomposers in an ecosystem? one-way flow from producers to consumers to decomposers one-way flow from decomposers to consumers to producer cyclic flow froms producers to consumers to ...
Tuesday, February 11, 2014 at 12:43pm

Science-2questions
Which of the following describes how matter moves between producers, consumers, and decomposers in an ecosystem? one-way flow from producers to consumers to decomposers one-way flow from decomposers to consumers to producer cyclic flow froms producers to consumers to ...
Tuesday, February 11, 2014 at 10:31am

Science
Associate each item in the table with at least one field of science and one area of technology/engineering. Choose from the terms given at the bottom. Automobile aspirin shirt computer pesticide satellite robot atomic bomb vaccination can of soup polyester wrapper skyscraper ...
Tuesday, February 11, 2014 at 1:00am

science
What is the average speed of a satellite given the following information. 1) The earth's radius = 6000 km 2) The satellite is 900 km from the earth's surface 3) The satellite's orbital period: 2 hours 4) Circumference = 2pr (p = 3.14) A) 6 km/s B) 10 km/s C) 5 km/...
Monday, February 10, 2014 at 9:10pm

Science
Name 3 examples of fungus found in your house and where you found it or what you found it on.
Monday, February 10, 2014 at 6:09pm

science
Can scientists use radiocarbon dating to find the age of a very tall, old redwood tree living in an old growth forest? Explain your answer.
Monday, February 10, 2014 at 5:43pm

Science
Name 3 examples of fungus found in your house and where you found it or what you found it on.
Monday, February 10, 2014 at 5:24pm

science
Water Cycle:Evaporation (cause by sun) (sun gives off heat in light in order for H20 to evaporte) Condensation (form of coulds) Precipation (coulds get to hevay and relase all its water;sleet rain hail snow...other..)runoff (water thats seeps into the ground)ground water (...
Monday, February 10, 2014 at 4:33pm

Science
Pomology is the science of what? 1. wrinkles 2. oil mixtures 3. bean development 4. growing apples
Monday, February 10, 2014 at 2:40pm

Math, science, trinogonomentry
1, solve triangle ABC which have angleA= 250.251 angleB=600.511 and a=3.82 find c
Monday, February 10, 2014 at 1:15pm

Math, science, trinogonomentry
1, solve triangle ABC which have angleA= 250.251 angleB=600.511 and a=3.82 find c
Monday, February 10, 2014 at 1:11pm

Pages: <<Prev | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | Next>>

Post a New Question | Current Questions

Search
Members