Film, Media & TV1 min ago
Science
Welcome To The AnswerBank ScienceAny discussion that is scientifically led is acceptable, whether it is about physics or a conspiracy theory.
Whilst discussions and debates are encouraged, The AnswerBank reserves the right to remove answers that are deliberately misleading, e.g. by implying that a statement is a scientific theory or law when it is not, especially when such answers may impact personal health choices.
The AnswerBank makes no claim regarding the scientific accuracy of any post (question or answer) made by a member.
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...
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...
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?...
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...
I want to know on a scale how scared you would be if Earth was going to be destroyed by a meteor. Please explain
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....
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?
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...
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...
In photography, light behaves as it moves in what?
A. Arcs
B.waves
C.pulsations
D.pinpoints...
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?
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,...
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)...
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...
https:/
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....
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...
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.
Is it possible that nothing is actually something?
Sometime today NASA will be releasing images of Sagittarius A, the black hole at the centre of our Milky Way galaxy. (No Mars bar jokes please). Brilliant science to gather and correlate the info...
Latest Posts
News7 mins ago
Starmer Refuses To Rule Out Signing Away...
News10 mins ago
Crosswords10 mins ago
ChatterBank18 mins ago