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Welcome To The AnswerBank Science: twinned with CERN*. We're here to answer all questions scientific.

*Not actually twinned with CERN.

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birdie1971
It's often been claimed that species are becoming extinct at an unprecedented rate. But the question never asked is – which ones specifically? Name them. In brief – where are the bodies? Which...
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nailit
Is being left/right handed a human trait or are animals (or at least some animals) also left/right handed? (or paw, clawed etc) And why do we have a dominant hand? Wouldn't evolution be better served...
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charlotteduckett
When 400 J of heat is added to 5.6 g of olive oil at 23*C, the temperature increases to 87*C. What is the specific heat of the olive oil?...
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bscal234
The potential energy of a certain oscillator is shown in the figure, as a function of position along the x-axis. UA = 10J, UB = 20J, UC = 30J. The mass Of the oscillator is 0.869k•g. The oscillator...
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MotherRhea
I want to know on a scale how scared you would be if Earth was going to be destroyed by a meteor. Please explain
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Rev. Green
Gravity obeys the inverse-square law at ordinary distances. To make it obey the same law at large distances we invent dark matter, and to keep it on track at vast distances we invent dark energy....
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charlotteduckett
If 10 liters of oxygen at STP (273 k and 1 atm) are heated to 512*C, what will be the new volume of gas if the pressure is also increased to 2.0 atm of mercury?
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charlotteduckett
A small rock is heated and placed in a foam cup calorimeter containing 20.0 mL of water at 25*C. The water reaches a maximum temperature of 27.2*C. How many joules of heat are released by the rock? if...
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charlotteduckett
You have a cup of tea (250 mL) that is 375 K which is too hot to drink. It needs to be cooled to 350 K before you can drink it. How much thermal energy has to be transferred from the tea to the...
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Mktbjc
Divergence of light beams passing through a pinhole results in what? A. Color distinctions B. More intense illumination of the image surface C. A fuzzy quality to the image D. Reversal of the image...
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Mktbjc
In photography, light behaves as it moves in what? A. Arcs B.waves C.pulsations D.pinpoints...
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Rev. Green
Ducks fly in V-formation to save energy. When swimming, should the V be sharper or flatter? Does it depend on viscosity, or speed of sound in the medium, or both?
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Palgrave
Trying to help a grandchild with homework, I am stumped by this question. Is it solvable or is there an error involved: 'A rectangle has an area of 25 1/2 cm squared. If the base is 4 1/2 cm,...
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charlotteduckett
Identify which of the following are redox reactions. If a reaction is a redox reaction, name the element oxidized, the element reduced, the oxidizing agent, and the reducing agent. a. Mg(s)+ Br2(l)...
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David H
The only ways sea level rises is from land ice melting and thermal expansion. Using this formula how much will sea level rise per degree C the temperature rises to melt mainly the Greenland ice shelf...
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ToraToraTora
https://news.sky.com/story/public-to-vote-for-name-of-minor-planet-in-our-solar-system-11691578 Discovered in 2007 we are now going to get a choice of 3 names to vote on, "Gonggong, Holle and Vili." -...
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charlotteduckett
Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10^-3 mol/L. Is this solution acidic, basic, or neutral? Show your work....
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charlotteduckett
A 105 g piece of copper wire is heated and the temperature of the wire changes from 25*C to 91*C. The amount of heat absorbed is 645 cal. What is the specific heat of copper? Show all work, including...
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ToraToraTora
How many people need to be in the same room for there to be an even chance of sharing a birthday month and day? The answer may surprise you.
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claymore
Is it possible that nothing is actually something?

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