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Science

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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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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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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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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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
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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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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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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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?

1 to 12 of 12