Science

Recent Questions

Science - physics
the fence posts around a large pasture are 2.5m apart. a horse starts running west beside the fence. when the horse passes the fifth fence post, your second hand is on the 9.0 mark. when the horse passes the fourteenth fence post, the second hand is on 11.5 seconds. what is ...

Science
If I live in Louisiana, what is an ecosystem near me?

Science please help
1. What is an example of a stable system?

SCIENCE CHEMISTRY
Use the atomic weight of carbon and chlorine to determine the theoretical value of the molecular weight of CH3OH Or methanol.( atomic weights (c=12, cl=35.5).

SCIENCE CHEMISTRY
Use the atomic weight of carbon and chlorine to determine the theoretical value of the molecular weight of CH3OH Or methanol.( atomic weights (c=12, cl=35.5).

Science
AN experiment discovered that a particular material was a poor conductor of electricity. This material would most likely be used as a(n) A. Conductor B. Insulator** C. Switch D. Resistor

science
Atoms from area A are most likely to form ionic bonds with atoms from area? A. area a B. area d C.area c D. area b

Language Arts
1. One would expect people living in utopian society to be A. wealthy B. difficult C. idealistic D. impossible*** 2. Which statement best describes a utopian community? A. People band together to share resources and duties equally.*** B. Resources are distributed in accordance...

Science
An engineer discovered that a TV set was receiving too much voltage to work properly. Which of the following circuit parts should the engineer add to make the TV set work properly? A:switch B:insulater C:resistor D:conductor I think C is the right answer. Thank you

Physical science
What type of intermolecular forces exist in each liquid

science
which is an example of covalent bond? a.chlorine accepts an electron from calcium b. lons in a bar of pure iron are surrounded by a large number of valence electrons c.sodium gives an electron to chlorine to form a stable bond d.there are less than 16 valence electrons in two ...

science
A cannon on wheels (mass = 300 kg) shoots Bo Bo the clown (mass = 60 kg) over the big top. If Bo Bo's speed out of the cannon is 22 m/s, with what speed will the cannon recoil?

integrated science
what is soil profile?

science
If all of the prairie dogs were removed, how do you think the prairie ecosystem would be affected?

science chemical reactions
which option shows a coefficient on the product side in this chemical equation? 3Fe +4H20 -->Fe30 +4H2 A. the 3 in Fe and 4 in H2O B.the 2 in H2O the 3 and 4 in Fe3o4 and the 2 in H2 C.the 4 in H2 D.the 3 in Fe and 4 in H2O and 4 in H2

science
what type of reaction is this 2h2o2 (l) -> 2h2o(l)+ o2 (g) a.single replacement reaction. b.decomposition reaction. c.acid-base neutralization reaction. d.no reaction.

Science
How many unit cells can be made out of an 18 carat pure 197 g sample of gold ?( FCC structure A = 197 u)?

physical science
Which description does the phrase "mechanical advantage" most closely relate to? A. The same amount of work using less force. B. The same amount of power using less work. C. The same amount of work using less power. D. The same amount of power using less pulleys.

Science
How many grams of Sodium chloride are in 53.2 g of solution that is 0.50% by mass sodium chloride?

Environmental Science
The ash produced when solid waste is incinerated is____________ than the original solid waste. A) less toxic*** B) more toxic C) as toxic D) more recyclable Since the toxins could have been burned away, leaving behind the ash.

science
Recall from previous activities in this lesson which era is sometimes referred to as the Age of Mammals. Locate and click on this section of the geologic time scale, and list the other possible names that could have been used to describe this era, and why?

Science
Can someone explain the idea of "structure affects function" please? And can you please give me an example?

Physical Science
What is the relationship between the temperature of a star and the spectrum of the star?

Environmental Science
Which type of solid waste is mostly paper, yard waste, food waste and plastics? municipal*** industrial biodegradable recyclable

science
Hi! Please help as soon as possible! This is my science connections academy test that I took but it restarted. I really don't want to do it again! THANK YOU! 1. Box A is hotter than Box B. After the heat is transferred, they become the same temperature. Which of the following ...

science
Hi! Please help as soon as possible! This is my science connections academy test that I took but it restarted. I really don't want to do it again! THANK YOU! 1. Box A is hotter than Box B. After the heat is transferred, they become the same temperature. Which of the following ...

Science
which of the following building materials come from renewable resources? Clay Glass*** Metal Plastic

Science
Carbon dioxide, ethanol, and energy are the products when anaerobic respiration occurs in oxygen*** in the presence of nitrogen in yeast cells in an animal cell

Science
It is possible that a raindrop that splashes you may be water from a lake you swam in the week before. True*** False

Science
One light bulb in a string of lights goes out. This causes all the other lights in the string to also go out. This is an example of a?? 1) resistor 2)parallel circuit 3)closed circuit 4)series circuit I think #4. Thanks in advance for your help.

Science
When the anthers are burst open, they shed a number of . . .

Science
What is similarity between meiosis and mitosis.

Science
How will resistance change when the voltage increases in an electric circuit if the current remains constant

Science
In a bank there are as many coins as the number of molecules in 1.6ug of methane. How many coins are there in the 4 bank?

Science
Why does a thrown footbal have bpoth potential and kinetic energy? Whats is the combined energy called? The combined energy is mechanical. The kinetic is the physical throw of the ball and the potential energy is the postion the ball starts at before beiing thrown. How do the ...

Science please help
i am sorry to bother you Ms. Sue but i need to present your proposal of a device that minimizes heat transfer. can you please give a list of insulators

Science
Can 8.9×10-19 be given to a conductor?

science
Of the following, which is NOT an adaptation made by reptiles to life on land? thick, dry, water-proof skin exchange oxygen and carbon dioxide in lungs only eggs with leathery shells open circulatory system I think its either C or B

Science please help
12. Measure the temperature of two unknown samples with your thermometer 13. Record both temperatures using the scale on the straw. please help ive been stuck for about 1 hour and a half

science
The greatest and least resultant of two forces acting at a point is 29 kgwt and 5 kgwt respectively.If each force is increased by 3 kgwt.Find the resultant of the two new forces when acting at right angles to each other?

science
The greatest and least resultant of two forces acting at a point is 29 kgwt and 5 kgwt respectively.If each force is increased by 3 kgwt.Find the resultant of the two new forces when acting at right angles to each other?

science
An aeroplane has to go from a city A to another city B 500 km away in which B is north of A.The wind is blowing towards east at a speed of 20m/s.The air speed of aeroplane is 40 m/s.The direction in which the pilot should head the plane to reach the point B is

SCIENCE
A block of mass m having charge q is sliding down an inclined plane of inclination and coefficient of friction.When uniform electric field E is applied parallel to the base of inclined plane,the block slides down with constant velocity.The value of E is?

Science
Which of the following best describes adaptive immunity

Science
Calculate volume of Carbon dioxide produced on heating 10g of limestone at S.T.P

Science
A golfer hits a 0.05 kg golf ball with an impulse of +3 N-s. What is the change in velocity of the ball?

science
a train travels with a constant speed of 84 km/h. how long will it take to travel a distance of 210 kilometers?

science
A 50-kg object moving at 12 m/s has a momentum of 600 kg ´ g m/s. What is the mass of an object, moving at 4 m/s that has the same momentum?

science
Mary drives her car with a constant speed of 84 km/h. How long will she take to travel a distance of 168 kilometers?

science
a garden pea plant bearing terminal violet flowers when crossed with another pea plant axial violet flowers produce axial, violet, axial white flowers in the ratio 3:1 . work out the cross showung the genotype of the parent plantand their progeny . name the law

Science
You want to make meatballs according to a recipe that says to marinate the meatballs in garlic and soy sauce before baking them in the oven. You prepare the marinade and immerse the meatballs, which are 6 cm in diameter, in it for 1 hour. When cutting into one of these rather ...

science
(a) An airplane flies at constant speed along a straight line at an angle of 30' with the horizontal. The weight of the airplane is 80000 N and its engine provides a thrust of 100000 N in the direction of flight. Determine the lift force perpendicular to the airplane's wings ...

Science
The vapour pressure of solution having 2 grams of solute X (molar mass-32) in 100 grans of CS2 (vapour pressure-854 torr) is 848.9 torr. The molecular formula of the solute is ?

science
An object has a gravitational potential energy of 24 joules when it rests on a shelf 3 m above the ground. What would be its gravitational potential energy when it is lowered to a shelf 1 m above the ground?

science
Why is refraction so important in eyeglasses.

computer science
create an algorithm, owchart, and pseudocode for a solution of the following problem. This solution will include the use of arrays needed to complete all parts of the logic. You have requested to develop a program that will record and process the rainfall totals of a 12 month...

science
A blood clot on a wound can best be compared to _______. A bandage**** Branches of a tree a life threatening infection antibodies

Science
1. Kudzu, a nonnative species, was brought to Georgia for decorative purposes. It is a vine that grows quickly and covers anything in its path. It can also grow on trees and block the sunlight. How is kudzu an environmental issue for Georgia? Kudzu can easily be removed. Kudzu...

science
1metre length is kept at​ 0 degree Celsius.why?

Science
For the reaction 2zn+o2=2zno, how many grams of zinc oxide are produced from 2.25g of oxygen?

Science
What mass of carbon monoxide will be produce if 40 grams of carbon are all allowed to react with 95 grams of sulfur dioxide?

science
A non stop bus goes from one station to another station with a speed of 54 km per hour. The same bus returns from the second station to the first station with a speed of 36 km per hour . Find the average speed of the bus for the entire journey by solved example

Science
Describe similarities between ice wedging and weathering caused by plant roots?

Physical Science
How much time will it take a car at 88km/hr to travel 500km? Show work and include final units

Science
Which of the following could be true of two different species that have a competitive relationship in the same ecosystem? One species preys on the other. The relationship is mutually beneficial. They share the same niche. One species benefits, while the other is neither helped...

science
1.where is most freshwater found on earth? A.lakes and rivers B.oceans and seas C.Underground D.icecaps and glaciers

science
2. Person A and Person B are playing tug of war. Why is neither A nor B winning if both are pulling as hard as they can? 3. A ball rolling down a hill. Is this an example of balanced or unbalanced forces?

Physical Science
Answer the following in terms of volume, temperature, and/pressure. As a syringe plunger is pushed down, why does the marshmallow inside the syringe get squished even though the plungerr never touched it? What law does this demonstrate?

science-MS.SUE PLZ HELP
Identify the following substances as pure substances, elements, compounds, mixtures, or solutions (answers may include more than one classification): mud, copper, salt water, carbon monoxide

science
Identify the test (independent) variable, the outcome (dependent) variable, at least 3 controlled variables, and the error Joe made in the following experiment: Joe Student rolled a toy car down a ramp and measured how far it traveled along the floor. He recorded the distance ...

Science
I need a good thesis statement for my essay. I'm doing research on water conservation. Reply as soon as possible thank you :)

science
Share your response to the following Analysis and Conclusion question of the lab you just completed with your classmates: Did the data support or reject your hypothesis? Using the data you collected, explain why or why not. Respond to at least two other posts by helping a ...

science
Design: Describe, using specific details, the spacecraft that you and/or other explorers will use to travel to your destination. In addition, make a detailed sketch of the spacecraft and its components that you will submit to your teacher for grading. You may create a sketch ...

science
explain the progress of the reaction in terms of kinetic energy. explain how various factor affect the rate of reaction. btw reaction is from the collisions of molecules in the chemical. any help thanks

Political Science
Is it better for legislators to answer to party leadership or to the median voter? Why or why not? Just pros and cons of both would be of immense help to begin research to answer this prompt

science
1. Which of the following is a reason why a person might want to wear snowshoes if walking a distance in deep snow? (1 point) snowshoes spread the person’s weight out snowshoes reduce the amount of pressure on a given spot snowshoes keep the person from sinking in the snow ...

Science
Electronic band structures are caused by electron-electron interactions between neighboring atoms. The greater the degree of interaction, the wider the band generally becomes. For this reason, atoms with high coordination numbers tend to form wider bands, since more bonds are ...

Science
“Strained silicon” technology is a technique where a silicon thin film is deposited onto a silicon-germanium (SiGe) film. Both Si and SiGe have the same crystal structure, but the lattice parameter of SiGe is larger than that of pure silicon. Therefore, when a film of ...

Science
Why is the KI solution added in excess

Math
Camille has 8 feet of rope. She cuts the rope into 1/3 foot pieces for a science project. How many1/3 foot pieces of rope does she have?

Political Science
In the Unit 4 lecture on elections, you learned about the median voter theorem. Describe the median voter theorem as it was explained in the lecture. Now, think about the political parties and leadership roles you learned about in Unit 5. How do political parties and ...

Science
A current of 6.0 amps passes through a motor that has a resistance of 5.0 ohms. Calculate the power 30 watts 150 watts 180 watts *** 900 watts Thanks

Environmental Science
Reclamation is the process of A) removing coal from a subsurface seam. B) extracting ore minerals from gangue minerals. C) returning land to its original or better condition after mining. D) protecting the habitats of local wildlife. I think the answer is C

science
explain the progress of the reaction in terms of kinetic energy. explain how various factor affect the rate of reaction. any help thanks

Science
22g N2, 44g CO2 and 18g of CH4 in contenar if the pressure is 750mm calculated of the partial pressure of each gases

Math and science for young children
When are children ready to understand how to tell time at what grade level?

Science
The periodic table is arranged according to several trends. Which of the following is true as you move from left to right along the periodic table: A the element's atomic mass decreases and the atomic number increases B the element's productivity increases C the element's ...

English
1. We learned math and science. 2. We learnt math and science. (Which past do we use? Are both okay? Which one is commonly used?) 3. I went there every other week. 4. I went there every second week. 5. I went there every two weeks. (Are the three sentences the same?)

physical science
a wave traveling in water has a frequeny of 250 Hz and a wavelength of 6.0 m. what is the speed of the wave?

Science - heat
1-By opening the door of a refrigerator ehich is inside a room, the temperature of the room : A) decreases B) increases C) remains unchanged D) first decreases and then increases******(my ans) 2- The thermometer used to measure very low temperature is - A). Mercury thermometer...

science
Calculate the period of oscillation of a simple pendulum of length 1.8 m, with a bob of mass 2.2 kg. What assumption is made in this calculation? (g = 9.8 m s - 2) If the bob of this pendulum is pulled aside a horizontal distance of 20cm and released, what will be the values ...

Physcial Science
A friend infers from the graph that the temperature of a 10.0-g sample of iron would rise 110 degrees Celsius. What should she ask before using the graph this way. (btw the graph depicts that 1 gram of aluminum's temperature rises 5.6 degrees Celsius, 1 gram of iron's ...

Physical Science
The specific heat of aluminum is 0.90 J/ g*C degrees and of iron is 0.45 J/g*C. How much energy was absorbed by each 1-gram sample? The temperature of 1 gram of aluminum rises 5.6 C degrees and the temperature of 1 gram of iron rises 11.1 C degrees.

science
Explain in detail what causes tides and give one reason why it is important for humans to monitor tides? The moon causes tides and if they don't stat under control the ocean and the equter can have big floods. Is this right?

science
Which of the following is true about the electric charges on the objects below?

science
when raining,it's advisable not to to t t t t to8 t t t t+t t t touch canvas tent from inside

science
boy 40kg sits 2m from a pivot.find the weight girl who can balance sitting 3.2m from pivot

science
why displacement uns uitable for determine t v volume of charcoal

Physical Science
A current of 6.0 amps passes through a motor that has a resistance of 5.0 ohms. calculate the power. my answer is 180 watts

Science
Which of the following describes an example of land reclamation? 1) after an area is mined for copper, the soil is replaced and new plants are planted. 2)after a forest is clear-cut, desertification occurs. 3)after a forest is clear-cut, it is mined for copper 4)after an area ...

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