Science

Recent Questions

Science
Which is a better insulator of heat, a plastic spoon or a wooden Popsicle stick?

Science
Pls teach me how to evaluate sin 375° without using calculator

science
How much work is done in raising a 16.1 kg backpack from the floor to a shelf 1.82 m above the floor?

physical science
What is the kinetic energy of a 2,710 kg car that is traveling at 66.0 km/h?

science (physics)
State gauss's theorem draw a graph showing the variation of electric field, as one moves from the centre of charge metal ball to a point on its surface and then to a far off outside point

science (physics)
What is a Gaussian surface?A point charge of 2.0mueC at the centre of a cubic Gaussian surface 9.0cm on edge.What is the net electric flux through the surface?

science
Define deductive reasoning. using general theories or principals to make predictions about more specific situations using specific observations in order to come to more general conclusions using specific observations in order to come to specific conclusions using general ...

Science
How could you use your open circuit to test if a material is a conductor or insulator? I'm thinking that you would have to use the resistance of a light bulb. If you set it all up, and the light bulb did not turn o, you have an insulator, if it did turn on, you have a ...

science
Which option correctly describes the scientific way of thinking? (Select all that apply) skeptical empirical practical rational A,D?

science
What is a simplified, constructed version of a more complex system? a replica a model a minisystem a hypothesis B?

Math
Hello! I need someone o check a couple answers for me please! I really need to get my Math and Science done, so I might be coming back again for my answers to be checked or to have help =) . 1. A car travels 172 miles using 7 gallons of gas. At that rate, how far can the car ...

Science halp
6.Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop? * A. The car with the smaller mass will require less force to stop than the car with the larger mass. B. The car ...

Science halp
10. Which situation is an example of Newton’s third law of motion? * 1 point A.A ball in a vacuum container moves in a straight line at a constant velocity. B.A ball in a vacuum container accelerates when kicked with a great amount of force. C.A person riding in a forward-...

science
Which option would guide the thought processes of a scientist? instinct hearsay opinion empirical data D?

Science
1. If you are driving down the road, how do you know that the car is moving (think about your reference point)?

Science
If the mass of each ball were the same, but the velocity of ball A were twice as much as ball B, what do you think would happen to the final velocity of each ball after the collision? To answer this question, create a hypothesis in the form of an if-then statement. The “if...

Science
What is the definition of energy?

ELA
A Screamingly Good Science Lesson Elizabeth Kibler 1Amusement park rides give us thrills, exhilaration, and delight. If you pay attention, these rides can give you something else—a science lesson. Roller coasters are amazing rides that can twist and veer until you scream; ...

Science
Meteorologist notice a low pressure Area developing over warm ocean water which type of storm is likely to form

Science
Identify the process that is necessary for sexual reproduction, explain why it is necessary, and identify how this process increases genetic variation.

Science
the specific heat capacity of solid copper metal is 0.385 j/g k. Calculate temperature rise of 100g bar of copper when 250J of heat is transferred into it?

Science
Does the tilt of the earth changes throughout the year True or false

Science
Show that in a SIGN the phase difference between displacement and velocity is 90°and between displacement and acceleration is 180°

Science
The diver has the least gravitational potential energy at position A-1 B-2 C-3 D-4

Science
Which is an example of velocity? A. A pickup driving 30 km in 20 minutes. B. A car slowing down on a sharp curve. C. An airplane traveling 450 km/h. D. An 18 wheeler driving west at 50 km/h.*** I think the answer is D, but please check. Thank you!

science
A 40W bulb is switched on. It burns out brighter when it was switched on than a short time later.What account for this change in brightness

science
Two charged particles are 8.5cm apart .They moved and the force on each of them is found to be tripled .How far apart are they now

Science
The diver has the least potential energy at position (Picture is of a diver at a squatting position ready to jump 2 is the diver jumping up and out 3 is him diving and 4 is in the water) A.1 B.2 C.3 D.4 This is from the Science Unit 5 "Energy" test if anyone has the answers to...

Computer science C++
3. After following statements have executed, find the value of the variable a. int a=5; while (a<20) ​a=a+3; 4. After following statements have executed, find the value of the variable a. int a=0; while (a<12) ​a++; 5. After following statements have executed, find ...

Science
Rate of evaporation depends on blowing of

Science
1.scientists rely on which of the following to provide critical feedback when revising scientific explanations? A.null hypothesis B.dogma C.opinion D.peer review

Science
Hi everyone, could somebody just check my answers?Say right and wrong, please do not give me answers, thanks. 1. Seahorses change color and swim together in predetermined ways before mating. These behaviors are called... A) asexual reproduction B) sexual reproduction C) ...

Science
Moonlight is really reflected sunlight. A. true B. false I think it is false am I correct

science
t is time to summarize your research by creating a Microsoft® PowerPoint presentation or by writing a Microsoft® Word essay about the four landforms you chose to research and complete the Landform Portfolio assessment.

Science
How does a geneticist use pedigrees? A. to create genetic crosses. B. To replicate identical strings of DNA C. To prove that sex-linked traits are caused by codominant alleles D. To trace the inheritances of traits in humans

science
water condenses onto the grass in the early morning when the air is clear because? A the air near the ground is warmer than the ground B the air near the ground cools to its dew point( I think this is the answer) C the relative humidity decreases D the presence of carbon ...

science
Which of the following techniques are suitable for online, real-time filtering? Synchronized averaging Derivative-based filter Adaptive filter Moving average filter

Science/Astronomy
Choose a time period from history. Which one of the four solstice/equinoxes would have been the most important to this time period? Why?

science
How do the Sun, Earth, and Moon depend on each other?

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

Chemistry/Science
What is the proper way to dilute 6M HCl to 1 M HCl?

science
1) Describe how you would dilute 10mL of concentrated sulfuric acid to 100mL. 2) Describe how you would make 500 mL of 0.1 mol L sulfuric acid form 2 mol L^-1 sulfuric acid.

Science
Which of the following is an advantage that a farmer would see when using a genetically-engineered crop? 1.introducing chemicals in the environment 2.increasing an animal’s resistance to antibiotics 3.increasing the amount of crop harvested 4.reducing the resistance of a ...

Science
Leroy, who has a mass of 100 kg, is skateboarding at 9.0 m/s when he smacks into a brick wall and comes to a dead stop in 0.2 s.

science
How do I prepare 3% H2SO4 from concentrated sulphuric acid (98% with density 1.84g/ml)?

science
he Bowen ratio describes how available heat at the Earth's surface is partitioned between latent heating (changes in phase of water) and sensible heating (conduction and convection). An increase in the Bowen ratio of agricultural land is the consequence of a(n) [(increased) or...

Science
How many calories of heat energy are required to melt 20 grams of ice at 0 °C? Answer: _____ calories How many calories of heat are required to evaporate 20 grams of liquid water at 0 °C? Answer: _____ calories

Science
What makes “real-life” empirical research different from this ideal model

Science
So I’m awful at summarizing and I came up with the really long answer and I know I need it shorter because it’s definitely not gonna fit on two lines. Please help! Large amounts of heat or transferred to earths mantle from earths core and the mantle itself. Heat and ...

Science
A Statement : A boy pushes a shopping trolley (weight due 2 gravity of 150N) with a constant force of 75N . A constant frictional force of 20N is present 1, Draw a laballed force diagram n a free body diagram of all the forces acting on the trolley. .....2, Determine the ...

Science
How is constructivism different from the scientific approach to research

Science
Geologist believe that The crystals inside a geode probably form when... A: Lava suddenly cools on earth’s surface B: Minerals dissolved in a solution evaporate C: Minerals dissolved in a solution crystallize D: magma cools slowly inside Earth Ok so I’m Almost positive ...

Science
What are the criticisms of empirical research?

Science
What are the important steps in empirical research?

Science
What is continental drift?

Science
Egg-laying land animals have evolved to produce eggs with tough shells to ensure that 1 external fertilization can take place. 2 the egg and sperm can fuse 3 parental care is unnecessary*** 4 the developing embryo does no dry out

science
What is mutation? 1.A mutation is a permanent change in the order of bases in the DNA. 2. A mutation is a permanent change in the way the cell carries out mitosis I think #1 Thanks

Science
sample of alumium has a mass 6.3g.calculate the number of mole of alumium present and the number of atom of alumium in the sample(AL=27

Science
Earthquakes and Seismic Waves •If the statement is true right true if the statement is false change the underlined word or words(I’ll put them in parentheses) to make this statement true.• 1.______The shaking and trembling that results for movement of (rock) beneath ...

Science
A man with a genetic disease marries a woman who does not carry the disease. It is not possible for their sons to have the disease. The disease must be X-linked dominat Y-linked dominat X-linked reccesive Y-linked reccesive I'm reposting this because i messed up the first one ;-;

Science
X-linked dominant Y-linked dominant X-linked recessive Y-linked recessive

Science
What specific body parts have same functions as organelles?

Science
A student slides down a slide at recess. After getting off the slide he goes to cross the monkey bars. As he touches the metal of the monkey bars, he gets a shock. How did the electric charge transfer from the slide to his body? a. friction *** b. conduction c. induction d. ...

Physical Science
Please show each step: If you want to heat 100 kg of water at 20 ° C for your bath, calculate the amount of heat in water. Then demonstrate that this is equivalent to 8360 kilojoules.

Physical Science
If a step-up transformer has a primary coil with 40 turns, how many turns would be required in the secondary coil in order to increase the voltage from 80 volts to 160 volts?

Java Computer Science
Say I write an application that prompts the user to enter an integer. If the user enters a double or string or anything, anything not an integer an error will appear. I'm having trouble writing code to combat this problem so I can errorproof my application. I'm thinking I'll ...

Physical Science
A clothes dryer uses about 2 amps of current from a 240 volt line. How much power does it use?

Physical Science
A camcorder has a power rating of 16 watts. If the output voltage from its battery is 4 volts, what current does it use?

Science
If you swung a bucket of water quickly in an upside down circular path, the water would not fall out of the bucket. Which of the following best describes why this happens? a. Due to centripetal force, the water is pushing on the bottom of the bucket.***** b. air resistance ...

Science
Which of the following is not a force that would act on a skateboard rolling down a ramp? a. gravity*** b. air resistance c. rolling friction d. static friction

Physical Science
The law of reflection states that if the angle of incidence is 7 degrees, the angle of reflection is ___ degrees.

Science
the spindle fibers disappear and a new nucleus membrane forms around each set of DNA molecules is it Prophase I?

Science
When a ball dropped from a height it's speed continuously increased Give reason

Science
Can't undcramble these words-buuafau

Java Computer Science
So in math, a restriction can be set. For example 30<x<60. So I'm trying to do this in a Java else if statement. else if (x>30 && x<60) {, will that do the same thing. Because I did that in my program but I'm getting my desired output twice. I'm suspecting this is ...

Science
Which of these animals is on the Endangered Species List? A. deer B. blue jay C. holstein cow D. Florida panther My answer is D

Science
Governments don't always enforce the environmental laws because: A. they don't believe in them B. they are too busy C. they don't have enough money to enforce all the laws D. they expect the public to enforce laws My answer is C

Science
1. __________ is an environmental group that works to create awareness of pollution. A. The IRA B. Greenpeace C. Congress D. The FDA My answer is D

Math, Physics, and Science
What are the Fundamental Laws of Biology? How is it so different to the cultures of science itself? Explain in an equation or in a matter of writing.

Physical Science
What is the wavelength of an earthquake wave if it has a speed of 8 km/s and a frequency of 8 Hz?

Science
A scientist from the United States conducts an experiment using miles per hour to measure speed. Why might this be confusing for scientists in other countries? A) Scientists in other countries don't usually perform experiments involving speed. B) Scientists in other countries ...

Science
Which of the following is not part of the process of producing electricity from coal? 1. Coal is lifted onto a platform to give it potential energy before burning. 2. Coal must be burned to release heat. 3. Heating water produces steam. 4. Steam runs a turbine that generates ...

Science
Hi, could someone check my answers? The nucleus of an atom is made of _______. electrons and empty space protons and neutrons** protons and electrons neutrons and electrons Niels Bohr's model of an atom looked like a (n) ___. galaxy solar system** electron charge cloud Am I ...

Science
The energy in food was originally light energy from the Sun. True or false? I think it is true.

Science
A student mixed two clear liquids together in a beaker. A gas and a new liquid formed. The gas escaped, so the student was unable to measure its mass. She guessed that its mass was no more than 10.0 [LW1] grams. Her data is shown in the table below. Mass (g) liquid reactant A ...

Science
The process wherein water vapor molecules come together to form droplets of water or clouds? (It is not condensation, other term please)

Science
At zero degrees Celcius, can evaporation happened?

Science Help ASAP
Which chemical equation is balanced to show that mass is conserved during the reaction? A. Na + Cl₂ --> NaCl B. 2H₂ O₂ --> 2H O + O₂ C. CH₄ + O₂ --> CO₂ + 2H₂ O D. AgNO₃ + MgCl₂ --> AgCl +MgNO₃ Please Help!!!

science
Light waves are traveling through glass. If the wavelength of some part of the light wave is 4 x 10-7 m and the frequency of that light is 5 x 1014 Hz, what is the speed of light through the glass?

Science
1.Which of the following best describes an atom? A protons and electrons grouped together in a random pattern B protons and electrons grouped together in an alternating pattern C a core of protons and neutrons surrounded by electrons D a core of electrons and neutrons ...

Science 1 Question ASAP
5. Which of the following reduces global warming A. driving more frequently B. reducing public transportation C. reducing electricity use *** My Answer D. cutting down forests

Science
Which of these is lesser likely to influence temperature? A: latitude of the area B: population of the area C: proximity to the ocean D: proximity to a mountain

science
A 63 kg astronaut on a spacewalk when his line breaks. He throws a 10 kg o2 tank away from the ship with a v=12 m/s. This propels him back to the ship. Assume his v1=0; what is his v2?

Science
Is sustainability achieved in the film Lorax?

science
How are white and yellow produced by the opponent process?

Science
How do humans increase the amount of greenhouse gases?

Science
A student uses a eudiometer tube to collect oxygen gas over water where the temperature is 22 ºC. What is the pressure of the oxygen gas (mm Hg) if the air pressure in the lab is 735 mm Hg?

Science
Which of the following climate regions often have four seasons? A. polar B. temperate C. dry D. cool

Science
Which of these is true about water vapor? A. It is water in a gas state. B. It is water in a solid state. C. It is water in a liquid state. D. It is not measurable.

Science
If an atomic nucleus were the size of a dime how far away might one of its electrons be? A. 1 foot B. 1 inch*** C. 1 yard D. 1 mile My answer (***)

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