Science

Recent Questions

English
posted by rfvv Tuesday, April 17, 2018 at 7:16pm 1. He goes to an academy to study math and English. [Is 'an academy' in generic use? Or Does 'an' mean 'one'?] 2. He goes to academies to study math and English. [Is the word 'academies' in generic use?] 3. He goes to the ...

Science - Global Warming
What is global warming? What can people do to reduce global warming? um if someone can verbally tell me? links are fine, but I prefer someone to verbally tell me, thanks. :)

Science
if radiometric evidence proves that a rock layer contains a fossil that is approximately 10,000 years old, what can also be determined using the principle of superposition? A) The layers below this layer are older than 10,000 years old B) The layers below this layer are ...

Science HELP!!!!! (portfolio)
List the levels of organization within environments. (Community, species, habitat, ecosystem, population)

Science
Insolation refers to the amount of solar energy that reaches a body, such as a planet. the amount of heat energy contained in a beam of sunlight. the imaginary line that runs around Earth's middle. the spherical shape of Earth I don't know this one. The Coriolis effect refers...

Science HELP!!!!! (portfolio)
What is an ecosystem? Give an example.

Science Thinking Works
Plant and animal cells are different because A: plant cells do not have a nucleus or mitochondria B: animal cells do not have DNA or ribosomes C: plant cells do not have a cell membrane D: animal cells do not have a cell wall or chloroplasts I think the answer is C.

Science
In watermelons, the alleles for green colored fruit (R) seeded fruit (D) yellow blossoms (B) and early blooming (E) are dominant over their respective alleles for striped fruit (r) seedless fruit (d) pink blossoms (b) and late blooming (e). a). Symbolize a cross between a ...

Science
Step 1: Review these videos from your lessons if you need help with completing the lab report - Step One: Ask a Question, Step Two: Form a Hypothesis, Step Three: Design and Conduct an Experiment, Design, Experiment, Record, Step Four: Analyze the Results of an Experiment, ...

Science
Angle of refractions! I need help finding angle of incidence in air(or water or glass) it is for one of my labs. It iOS in a data table though.

Science
When an electric current is passed through water during the process of electrolysis two gases are formed. One gas has a boiling point of -183c and the other has a boiling point of -253c has a physical change or a chemical change occurred. Please explain I don't understand

Science HELP!!!!! (portfolio)
What term refers to the small parts of a cell that carry out different functions?

Science HELP!!!!! (portfolio)
Which type of organism has cells with a cell wall? What does the cell wall do?

Science- Help quickly!
 An electromagnet is different from a permanent magnet because an electromagnet ________. is magnetic can push and pull can attract some metals can turn on and off  Resistance to electricity is measured in ______. watts amps volts ohms .  An electromagnet works because ...

Science HELP!!!!!
What's the difference between a eukaryotic cell and a prokaryotic cell? Give an example of an organism with eukaryotic cells and an example of an organism with prokaryotic cells. This is a portfolio so I really need help please!!

science
Ok I really need help asap ok I need help on Human Impact on the Environment Unit test question 20.

Science
Two equal and oppisitely directed forces acting on an object will be in equilibrium . (a)only if they act on the same point on he object. (b)if they are separated by a distance. (c)when they are balanced by a third force. (d)when their moments about the same point are equal.

Computer Science
Problem3 : CIDR -A router has the following (CIDR) entries in its routing table: Address/mask Next hop 135.46.56.0/22 Interface 0 135.46.60.0/22 Interface 1 192.53.40.0/23 Router 1 default Router 2 For each of the following IP address, what does the router do if packets with ...

science
Powdered AgOH is slowly added to 2.0 L of a 0.020 M solution of NaOH until no more AgOH will dissolve. If Ksp = 1.4 x 10 -8 for AgOH: a. What is [Ag +] in the saturated solution? b. What mass of AgOH had to be added to the solution to produce this concentration of Ag+?

science (physics)
if a car is driving on a flat road at a constant speed. the driver drives off a cliff which is 180 m above a river it lands in the river 90 m away (measured horizontally), how long does it take for it to land

Science
What process occurs after a forest fire wipes out an entire ecosystem? What is this process called? What are the steps of this process after a natural disaster, such as a forest fire, occurs? Explain Please help me!! God Bless You!!

Science
Are there any resources that can be considered both Renewable and Non-Renewable?

Science
What are platelets?

science
does fitness as used in biology and survival have the same meaning? why or why not?

Science need help ASAP!
The closer together magnetic field lines are, the _____ the magnetic force. closer farther stronger weaker Magnetic poles always exist in north-south poles. true*** false A(n) _____ is an electric circuit that produces a magnetic field. magnetic battery electromagnet coil ...

Science (Chem)
Calculate the volume (in mL) of a 0.150 M KCl(aq) solution that contains 10.00 g KCl

science
what is the acceleration of a proton moving with a speed of 7.5m/s at right angles to a magnetic field of 1.4T?

Science
On a branching chart showing G evolution of a species what does each branch show

science
How is surface temperature data obtained?

science
What are the similarities and differences in the ice core, tree ring, and surface temperatures data?

science
What are three reasons lichens are useful to humans? Thanks!

Science
There are different types of circuits. A _____ circuit has more than one path through which electricity can flow. series resistor parallel**** short I'm sorry I keep asking questions :")

Science
I don't know if anyone saw my questions, so I'll ask again. I'm in need of quick help. prntsc[remove]r.[remove]com/[remove]j6[r​emove]kl9e The table shows the speed of sound waves in different materials. Sound would travel most quickly through ______. wood****(?) water ...

Science again help ASAP
Hi, I need some help. prntsc[remove]r.[remove]com/[remove]j6[r​emove]kl9e The table shows the speed of sound waves in different materials. Sound would travel most quickly through ______. wood****(?) water air outer space *Table shown in screenshot, Lightshot is a Secure ...

Science please help ASAP
What is an echo? the absorption of sound waves the transmission of sound waves the reflection of sound waves****(?) the vibration of sound waves Which is an example of the flow of heat through conduction? Hot air rises to the top of a room. A hot-air balloon rises into the sky...

math
The numbers below represent the scores on a science test. Graph the data in a line plot. 58, 55, 54, 61, 56, 54, 61, 55, 53, 54.

science
I need a step by step simple experiment to show that light travels in straight lines until at a point were it enters a new medium.

Science
A weather man reports “the storm waves are about 2 meters high and 35 meters apart.” What properties of the waves is the reporter describing? A- frequency and wavelength B- wavelength and wave speed C- amplitude and wavelength D- amplitude and frequency DOES ANYONE HAVE ...

Earth's Moon
Your Science Club is tutoring some younger students in astronomy. You hear one student describe how people on Earth can never see “the dark side of the Moon.” You know that is an inaccurate statement. What reasons would you give to explain to the student that “far side ...

science
One way humans can preserve biodiversity is ______. A. habitat destruction B. habitat preservation C. habitat fragmentation D.poaching i need to check all my answers but do not have much time, please help me

Science
Toads have lived in Florida's grassy regions for over 10,000 years. This population was a mixture of brown, tan, green, and speckled colored toads. Some of the toads later moved into the sandy regions of Florida's mainland. Over many years, only brown toads remain in these ...

Science
The children at a local park think the slide is too slippery. There is too much friction. W hat could you do to decrease the amount of friction on the slide? *writing question* I don't want the answer,just some help finding it. Please, please answer ASAP!

Science
Is fungi more like a plant or animal? Explain why.

science
#1 which electromagnetic waves have the longest wavelengths a:radio** b:infrared c:gamma B:ultraviolet #2 what process describes the transfer of heat through matter by molecular activity a:conduction b:convection** c:radiation d:evaporation #3 The heating of the lower layer of...

science
Jim weighs 200N. The bottom of his trainers have an area of 0.08m2.

Science
*Note that I most likely will have more questions throughout the day An object that moved as a result of a machine working is called the_______. effort load*** output mass A knife is an example of a(n) _______. inclined plane wedge***** (?) lever pulley //[remove]...

Science
a black car and a white car are sitting in the Sun, why does the black car get hotter

science
How does gay sex work? me and my boyfriend tried and his !@#$%^& couldnt fit in my !@#$%^& and it hurt

science
Find the acceleration of the masses shown in Figure, given that m1 = 1.0 kg, m2 = 2.0 kg, and m3 = 3.0 kg. Assume the table is frictionless and the masses move freely.

science
K2Cr2O7+H2SO4+FeSO4-->K2SO4+Cr2(SO4)3​+Fe2(SO4)3+H2O

science
K2Cr2O7+H2SO4+FeSO4-->K2SO4+Cr2(SO4)3​+Fe2(SO4)3+H2O

Science
An immense body of air characterized by similar properties at any given altitude is known as a(n) _____.

Science
Which formula is used to calculate acceleration? Time divided by change in speed Time x change in speed Change in speed divided by time Change in speed x time Help ? Thanks, Anonymous

Science
//[remove]prntscr.[remove]com/[remove]j4​jmwi (PICTURE IS IN SCREENSHOT)  Which statement is correct? Land animals are quicker than animals that fly Insects can not move as quickly as land animals Some birds can move more quickly than some land animals*** All birds can ...

Science
A geologist measured the amount of 40K in a rock; she determined that there was about 10 grams of 40K and 10 grams of 40Ar. What would be the approximate age of that rock?

C.A science unit 2 lesson 13
I really need help with this unit test, can you please help me?

C.A science unit 2 lesson 13
I need help on this unit test, Can someone please help me?

Science
How Is a compound different from a mixture? it is made of one substance It cannot be made of organic materials It cannot be broken down It cannot be separated by a physical change I don't know  This formula shows the chemical reaction that occurs when the body breaks down ...

Science
Which of the following are the basic building blocks of life 1.) cells 2.)lungs 3.)organs 4.)tissues thx BEHEHEHE

Physics
In Pittsburgh, children bring their old jack-o-lanterns to the top of the Carnegie Science Center for the annual Pumpkin Smash and compete for accuracy in hitting a target on the ground. Suppose that the building is 23m high and that the bulls-eye is a horizontal distance of 4...

science
I need help with a paper about volcanos can someone help (I looked it up cant find much) Thanks: A+

Science help
DESCRIBE some uses of satellites orbiting Earth. I need help! Will you help me?

science
can somebody explain to me whats the difference between physical and chemical properties of a substance?

Science
My teacher wants me to write a 7 paragraph essay on Interdependent Relationships in Ecosystems. I don't fully understand the topic, though I studied my textbook for about 45 minutes to and hour. I was wondering if you guys could help me. Thanks! ^-^

science
How can volcanic eruptions change the surface of the earth? A. by lowering land levels several feet B. by creating new islands and land C. by creating large deposits of coal D. by decreasing the level of the ocean i think its B

Science
What are some examples of Environmental Invaders?

Science
what is the ph range of red cabbage

science
Electromagnetic and mechanical waves have different characteristics that make them advantageous for certain applications. Select the reasons that mechanical waves, such as ultrasound, are used for soft tissue imaging and to identify fractures in metals. I) mechanical waves are...

Science
Why does evolution matters today if it takes millions of years for an organism to change and adapt? Also, does it have to do with genetic variation?

science
Write the chemical formula for cornstarch + heat = Dextrin + water. I know that the formula for cornstarch is C27H48O20 The formula for Dextrin is C6H10O5. I also have to balance the equation

Science
Plz help me plot on graph and also the solution. Q. When velocity is 20 m/s time is 0 and velocity 20 m/s time is 5 sec, velocity 10 m/sec time 7 sec, velocity 20 m/sec time 10 sec and velocity 0 time 15 sec. Calculate total distance showing each step and avg velocity. Thank you.

Science
I'm something really important for without me you cannot enjoy slumber and stay stranded wherever you are. It's easy to find me if you know the hottest place of your parents' abode.

Science
1.How much heat is absorbed by a 63g iron skillet when its temperature rises from 12oC to 30oC? 2.How much heat is needed to raise the temperature of 5g of water by 15oC?

Science
A label on a 500ml Dettol bottle,indicated chloroxylenol is 4.8g/100ml.his many molecules of chloroxylenol are in 25cm3of dettol?

Science
For a particular plant, leaf texture is either fuzzy or smooth. A homozygous fuzzy plant is crossed with a homozygous smooth plant. All offsprings are smooth. Which sentence best describes the alleles for this trait? A. Fuzzy is dominant over smooth B. Smooth is dominant over ...

science
what is the pOH of a solution that has a OH- cincentration equal to 1,36 multiple by 10^-10M?

science
A 25,0ml sample of 0,105M HCl was tritrated with 31,5ml of NaOH.what is the concentration of the NaOH?

Science PLEASE HELP ASAP
Why is photosynthesis an example of a chemical reaction, and why is it classified as endothermic?

Science
Why is Mercury a hazard in the environment?

Science
Briefly describe Pretreatment, Primary Treatment and Secondary Treatment for municipal wastewater.

Science
Describe 3 air pollutants and the troposphere to include the effects of the pollutants on the environment.

Science
Describe 2 events in human history and in what way the events allowed human populations to grow and thrive.

Science
Let's say that I am testing 3 people's typing speeds with 5 different instruments each. How do I find the best instrument that they improved on the most, even though each person has a different instrument that they improved on the most?

Science
For my science experiment, I am testing 3 people's typing speeds with 5 different instruments each. How do I find the best instrument that they improved on the most, even though each person has a different instrument that they improved on the most?

science
The concentration of H2SO4 in a bottle labelled "concentrated sulphuric acid" is 18M what does it mean

science
How much energy is required to lift a 40.00 kg bag of sand 1.02 m

Science until 7 I Need help
An organisms genotype is It physical appearance It combination of alleles The mutation it inherits The crossing over that occurs during meiosis.

Science
Two closed vessel A and B of equal volume containing air at pressure P1 and temperature T1 are connected to each other through a narrow open tube.If the temperature of one is now maintained(where T1>T2) then that what will be the final pressure of air

science
A pendulum has 454 J of potential energy at the highest point of its swing. How much kinetic energy will it have at the bottom of its swing?

Science
How many elements are therein FENO3

science
what is a common by-product of fuel production ? Is it Co2 or O2?

science
the process of changing free nitrogen into a usable form of nitrogen is called

Science
How is an action potential propagated?

Science
What stops depolarization?

Science
What type of window would allow the most amount of light to come in?

Science Help ASAP
both primary and secondary succession begin with pioneer species that... A. change the area and make it safer from predatory organisms B. invade the area so that new organisms cannot be established. C. modify the area and allow larger and more complex organisms to appear D. ...

Science
calculate the boiling point of 25.5g of C7H11NO7S in 1.00x100g H20

science
which of the following will most likely result in a decrease in population increased death rate and increased immigration decreased birth rate and increased emigration increased birth rate and increased immigration decrease death rate and decreased emigration

Science
(just a quick science question, pls correct my answer if im wrong..) Which of the following statements is true A.) there is more water on earth now than there was millions of years ago **** B.) there is less water on earth now than there was millions of years ago C.) there is ...

English
1. I go to academy for my English. 2. I go to an academy to learn English. 3. I go to an English academy after school. 4. I go to English academy to learn English. 5. I go to a private institute to learn three subjects such as English, math and science. 6. I go to private ...

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