Science

Recent Questions

4th grade science
imagine that the air temperature in your classroom increased by 10 degrees celsius. Would the relative humidity of the air in the room go up or down? Explain. Please help!!!!

science
How does molecules move throughout the water cycle? evaporation: They move freely in the air condensation:They lose energy and are cooled runoff; they move down to the water precipatation: they fall down to the earths surface im really not sure so if i have something wrong can...

Science
How do I create a cladogram using DNA or protein sequences taken from three different organisms?

science
science questions:Look around your house and make a list o different kinds of containers that use insulation to keep foods hot or cold. If possible, describe the type of insulators used in each container. I don't know which containers in my house that uses insulation. Can ...

Ms. Sue PLZ HELP!!!(science)
Study the amino acid sequences of the same protein taken from four different species of plants. Which pair of plants is most closely related? Species 1: -A-P-A-C-W- Species 2: -G-P-G-S-F- Species 3: -A-P-A-C-F- Species 4: -N-K-M-H-H- a. Species 2 and 4 b. Species 1 and 3*** c...

Ms. Sue PLZ HELP!!!(science)
Humans developed antibiotics to fight bacterial infections. However, some antibiotics are no longer effective in killing the bacteria they once killed. How does the theory of evolution explain this? a. The antibiotic mutated the bacteria, which allowed resistance to develop. b...

science(check answers)
Which of the following is a correct description of a tornado A.a large swirling low pressure system that forms over that forms over the warm atlantic ocean B.A winter strom with wind speeds of at least 56 km/h and low visibility C. A violently rotating column of air in contact...

Science
True or False. Winds usually move from areas of low pressure to areas of high pressure.

Science
Should the government establish a national park to preserve the tundra in Alaska?

L.A Ms. Sue? or anybody?
1. Which of the following aspects of the setting is evidence that the giver is an example of science fiction A. Jonas rides a bike to school every day B. jonas's father works in a daycare center C. a loudspeaker makes announcements to the community. D. Jonas lives in a simple ...

Science
When a water wave with a positive amplitude of one meter meets another water wave with a negative amplitude of one meter, what will be the result? Explain.

Science
What is the formula for the frequency of visible light? Using this formula, explain what will happen to the frequency when yellow light (580 nanometers) is slowed down slightly when it passes through a crystal.

Science help urgent :/
What has been the general trend in human population growth? A.) The human population has decreased. b.) The human population has remained constant. C.) The human population has grown exponentially. d.) The human population has increased and then decreased significantly.

Science
1.If the current (in amps) remains the same, but the voltage increases, what effect does this have on the power (in watts) consumed by some device? 2.How is the dimension of time different from the dimensions defining space?

Science
Is sulfur a good conductor or poor conductor of heat and electricity?

Science
Can you plz check asp 1. Suppose the total momentum of two masses before a collision is 100 kg m/s. What is the total momentum of the two masses after they collide? (1 point) 0 kg m/s 50 kg m/s 100 kg m/s 200 kg m/s 2. What is the momentum of a 20.0 kg scooter traveling at 5....

Science
A free proton and a free electron are placed in a uniform electric field. Which of the 2 will experience a greater acceleration?

Science
Plz check it fast or just improve advice 9. Provide three statements that demonstrate the importance of units when describing motion. (3 points) Three statements that demonstrate the importance of units when describing motion are 1.unit i m/s indicate it is in SI unit 2.It ...

Science
Use the word ANGLE OF REFRACTION in a sentence?

science
it has been hypothesized that chloroplasts originated from photosynthetic cyanobacteria that became symbiotic inside a host cell. Which of the following observations provides the strongest evidence for this suggestion? A) microscopically, chloroplast appear similar to ...

science
Is glycerol a fat, carbohydrate or protein?

Stats (Math)
Assume that Science scores on a 25-point quiz for a random sample of 5 students were drawn from a normal population. The assumed variance was 20 while the recorded variances were: 18, 16, 10, 13, and 23. You suspected that the variance is actually higher. What test do you need...

Science
one year ago How many Global Positioning System (GPS) satellites are required to pinpoint your location on Earth’s surface? (1 point) 24 12 3 5 i think it's 4, but 4 is not an option

algebra
Megan's science teacher gave each student in her class a 20.0 gram sample of sedimentary rock. Each student is required to verify the rock sample by taking four mass measurements. Which measurement is the most accurate of the four recorded?

Science
Water molecules are smaller and have less mass than alcohol and oil molecules. Explain why water is more dense than alcohol and oil.

Physical Science
A girl pushes on a box of Christmas Ornaments with a mass of 12 kg and it moves an acceleration of 2m/s^2. With what force does the girl push on the box?

science
please unscramble dramalanse

c programming , computer science
1-Write a program that determines the day number (1 to 366) in a year for a date that provided as input data. As an example, January 1, 1994, is day 1. December 31, 1994, is day 365. December 31, 1996, is day 366, since 1996 is a leap year. A year is a leap year if it is ...

Science
1.how do plants grow when light comes from one side only? Why might plants respond to light this way? 2. What is a circadian rhythm? 3.What controls the change in leaves from night to day? 4.what might the plant leaves change from night to day?

Science
How do two tissue types work together to improve organ function

science
a desk is classified as a solid because it has a definite shape and volume at what???

Please Answer my Question(Science)
1. Which of the following statements about continental glacial movement is correct? Continental glaciers can only flow uphill Continental glaciers can flow in all directions. Continental glaciers can only flow downhill** Continental glaciers do not flow at all 2. A farmer uses...

Science
Are these answers correct? 1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere**** Chromosphere Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? ...

science
Jennifer made 5 L of punch for her party. Her brother made another 750 mL. If they combine the two batches, how many 180 mL servings would they have? Would there be any punch left over? If so, how much?

Science
WHICH SYSTEM HAS THE GREATEST TIDAL EFFECT? EARTH-SUN OR EARTH-MOON?

science
Earth's energy sources include both nonrenewable and renewable resources. Name at least three sources of energy that could be used in your house. The describe the ideal energy source for generating most of your home's electricity, and explain why you chose that source. (only ...

science
What is the difference between specific heat and heat capacity? If you heat 500g of H2O initially at 8C in a 1000 W microwave with 80% efficiency for 2 minutes, what will the final temperature be?

science
a car travels due east on the level road for 3km it then turns due north at the intersection and travels 4km before stopping the magnitude of resultant displacement of car

Science
What is the likability of a earthquake and volcanic eruption happening in Minnesota

Computer Science
Create a program that allows a user to select one of the following four menu options: a. Enter New Integer Value b. Display Pointer Address c. Display Integer Address d. Display Integer Value For this program you will need to create two variables: one integer data type and one...

Science
if you exert the same force on two objects of different masses. which object will have the greater acceleration?

science
When a tennis ball smashes into a tennis racket, the ball temporarily changes shape as it compresses against the racket. Which type of energy is temporarily stored with the ball as it is compressed? (1 point) elastic potential kinetic electrical potential

science
3. A 10.0-kg animal is running at a rate of 3.0 m/s. What is the kinetic energy of the animal? (1 point) a. 3.3 J b. 30.0 J c. 45.0 J d. 90.0 J

science
Two identical masses are moving down a slope. One mass is traveling twice as fast as the other mass. How does the kinetic energy of one mass compare to the other? a. The faster object has the same kinetic energy as the slower object. b. The faster object has less kinetic ...

Ms. Sue PLZ HELP!!!(science)
A portion of the amino acid sequence of an enzyme from a worm is shown below: -Q-Q-Q-Q-N-N-N-C-C Analyze the same potion of the same enzyme taken from several other organisms. Place them in order from most closely related to the worm to most distantly related to the worm. -Q-...

Science
How does the C horizon form? Rainwater washes clay minerals from the A horizon to the C horizon Plant roots weather pieces of rock plants add organic material to the soil bedrock weathers, and breaks up into soil particles.** What makes up soil besides rock particles, minerals...

Science 6 th grade
Can you plz check this :0 True/False 1. Kilometers per hour describes the speed of an object. (1 point) true false * Multiple Choice 2. Which of the following reference points would allow you to observe the speed of a car that you are traveling in? (1 point) an airplane flying...

science
In commercial/industrial life, most AC apparatus (e.g. lifts, lights, machinery, air conditioning, motors and so on) take more from the electricity supply source than they actually need. Power Factor Correction (PFC) is an energy saving technology that is used to improve the ...

science
hey is there anybody to talk to out there like ms sue

science
What is the major difference between how water and nutrients are carried in a plant and how water and nutrients are carried in the human body?

Earth Science
the magnification of a telescope is changed by changing what? my answer is the eyepiece

science
750N diver does a triple somersault off a 10m platform. If it takes 1.5sec. to hit the water. What is the diver's power?

science
The mass of a beaker containing a sample of sodium dichromate was determined to be 68.9 g. After transferring a sample it weighed 56.424 g.Determine the mass (g) of sodium dichromate transferred to the correct number of decimal places

Science
There are 2 high and 2 low tides each day. Why do this many tides occur each day?

Science
On what sides does a "bulge" in the earth's oceans appear on the earth?

Science
How does the sun's gravitational attraction to the earth compare to that of the moon?

science
A 80 kg firefighter climbs flight of stairs 6 meter high in 10 seconds. How much work is required by the firefighter?

Science
Give an example of something that uses all third of Newton's Law.

Science
An existing cord that you use for a lamp is much thinner than an extension cord recommended for use with large appliances. if u plugged in a refrigerator using a lamp extension cord, the plastic coating of the cord could melt and perhaps start a fire. why does this occur? how ...

science
The blocks shown are released from rest with the spring unstretched. The pulley and the horizontal surface are frictionless. If k = 427.1 N/m and M = 4.5 kg, what is the maximum extension of the spring?

Language Arts
which of the following are you most likely to find in a science fiction novel such as The Giver? A. People living in a futuristic environment where rules lead them to act differently than is commonly accepted now. B. Characters from the distant past achieving great things and ...

Math
ack's science teacher gave each student in his class 15.0 grams of an unknown substance to identify. Each student was required to verify the mass of their substance by taking four measurements. Which of Zack's measurement was the most accurate of the four recorded?

science
How does the structure of epithelial tissue protect from dehydration

Science
Which of the following is a renewable source of energy? A. gasoline B. wind C. natural gas D. coal I am not fully understanding these sources and energy thing...

science
to study and change of current due to variation of resistance in an electric circuit?

Science
How does the structure of epithelial tissue function to prevent dehydration?

Science
What type of tissue do you think the wall of the villi is made from? Is it connective tissue or maybe epithelial tissue?

Science
Does the circulatory system make hormones, or merely distribute them after they are made in endocrine tissues?

Science
why might an ecologist use a food chain for one study and a food web for another study

Discrete Math
12 A computer science department has a probability of 0.35 that a senior receives a job offer in IT before graduation. Random select 8 senior students • What is the probability that 5 students received offers before graduation? • What is the probability only 1 student ...

Science Plzz Help Ms sue
explain how genetic variation and environmental pressures can lead to a change in the characteristics of a population.

Science/Conversion
Please help me with this How do I convert 10ug/mL to: 1) 100ng/ul 2) 100ng/100ul Thanks

Earth Science
What are some factors that make it difficult for geologist to learn about the Precambrian era?? Please Explain

Science please check answers
In a particular breed of cattle, a black coat is dominant over a red coat. If a cow with a red coat is crossed with a black bull that is heterozygous for coat color, what percentage of their offspring would you expect to be black? 25 50 75*** 100 A scientist is studying a ...

science
A car owner pushes a car with a force of 80 N. The car does not move. Which of the following best describes the force that the car exerts on the car owner?

science
A new organism is introduced into a ecosystem. it gets its nutrients from a dead tree. can this organism be described as a scavenger or decomposer

science
Could you please check my answers? Question one: When evolution was first proposed, which of the following was used as evidence as support? A. Observations of nature. B. lab experiments. C. extensive fossil collections, D. genetic sequences. I chose answer C. Second Question: ...

Science Please help Ms. Sue!!!
Which of the following does not reduce water pollution? a) cleaning up oil and gasoline spills. b) reducing pollutants such as pesticides and fertilizers. c) increasing the use of gasoline.*** d) properly treating waste water Can you please check my answer?

physical science
A baseball diamond has 90 feet between bases. A player hits the ball and runs to 1st, 2nd and stops at 3rd base. The player's displacement is

Physcial Science
Standing on top of a tall building a student drops their physical science book. How far has the book fallen at 5 s?

science
The aquarium was sealed and placed at a bright corner. After two weeks, both the number of water plants and water snails increased. (a) Besides their gaseous needs, state one other way in which the water snail and the water plant are interdependent.

Science
Can you give me examples of palatable inorganic acids other than phosphoric acid?

science
A uniform plank of a seesaw is 5 meter long and supported at its centre.a boy weighing 40kgf sits at a distance 1.5meter from one end of the seesaw.where must a girl weighing 25kgf sit on the other end of the seesaw so as to balance the boy.

computer
17. Which of the following sources likely has the most reliable information? A. A graduate student's blog that was updated ten months ago B. A company-sponsored website with detailed citations C. A computer science textbook written by an expert in the field in the early 2000s...

science
Jenny is doing an experiment to see if students in her class like apples or oranges best. She will offer each student an apple or an orange. Then she will record how many students took each kind of fruit.What is a valid prediction Jenny could make about the results of her ...

science
HIV. B. Reed-Sternberg cells. C. Epstein-Barr virus. D. ARC

science
how many of its photons are required to ionize atomic hydrogen? Einstein quote for Lenard’s measurement of the “largest effective wavelength for air”=190 nm,, For this problem, take the energy of the ground state of the hydrogen atom to be −0.99946650834R∞hc

science
How much heat is added to 10 g of water when you start from room temperature and heat it to its boiling point?

science
When comparing the flow of lymph in the lymphatic system with the flow of blood in the circulatory system, it can be said that the lymphatic system also A. contains fluid that travels in a closed circuit. B. uses a pump. C. contains fluid that travels in only one direction. D...

SCIENCE HELP! Ms.Sue
Check my answers! In the 1930s, windmills were widely used to generate electricity on most farms in the united states. which kind of energy resource is used in windmills? A. Recyclable energy B. Nonrenewable energy C. Renewable energy**** D. Potential energy The amount of land...

Computer science(Information Retrieval Architectur
Given the following three items where w2, w4, etc. all represent different words. Compare how well the shingle process works in determining which items are near duplicates by looking at the shingles composed of 3 words versus shingles composed of 6 words. Use the rolling ...

Computer science(Information Retrieval Architectur
9. Given the following documents determine the weights for Naïve Bayesian category for document to be about “Trees”. Given the new document listed determine if it should be given the category or not. (14 points) Doc1 Oak, Plum, rose, Oak, Oak, Plum, ash, ash, ash is ...

Computer science(Information Retrieval Architectur
9. Given the following documents determine the weights for Naïve Bayesian category for document to be about “Trees”. Given the new document listed determine if it should be given the category or not. (14 points) Doc1 Oak, Plum, rose, Oak, Oak, Plum, ash, ash, ash Doc2 ...

Computer science(Information Retrieval Architectur
PATRICIA TREE: a. Create the PATRICIA Tree and Reduced PATRICIA for the following 01010101010110 to 8 levels of sistrings (level 1 is original string). b. Assuming a search term of 01010101111 calculate the number of comparisons needed for the PAT tree and the reduced PAT tree.

Computer science(Information Retrieval Architectur
Stemming: a. Compare advantages and disadvantages of Porter Stemming algorithm, Dictionary stemming algorithm and Success Variety stemming algorithm. b. Create the symbol tree for the following words (canopy, cars, cabony, cabossy, cabort, cabins, cabity, cabiry) Using ...

Computer science(Information Retrieval Architectur
A. Why are inverted files the most typical structure used for search systems? How does n-grams modify the inversion list approach? B. Discuss the similarities and differences between N-gram and PATRICIA TREE approach to indexing.

Computer science(Information Retrieval Architectur
a. Describe how the statement that “language is the largest inhibitor to good communications” applies to Information Retrieval Systems. b. Relate this to the challenges in information retrieval that make it difficult to find the information a user is looking for. c. What ...

Computer science(Information Retrieval Architectur
Consider the use of entity identification and categorization. a. What problems are they trying to solve – what are they trying to do. b. How do they affect the list of processing tokens in an item? c. How do they affect the Document Vector for the item?

science
A harmonic wave is traveling along a rope. The oscillator that generates the wave completes 49.0 vibrations in 20.8 s. A given crest of the wave travels 402 cm along the rope in a time period of 14.9 s. What is the wavelength?

science help
Explain how the hooves of the camel are adapted to move in the dessert.

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