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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.
Three friends are on a road trip, and they rent a triple room for a night. When they get to the hotel, they pay the fee of $30 and go up to their room. The porter brings up their bags and refunds them...
In reply to an inquiry about the animals on his farm, a farmer says: “I only ever keep cows, goats, sheep and horses. In fact, at the moment they are all cows bar nine, all goats bar ten, all sheep...
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What is the number ?
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A matchbox consists of a tray inside an open ended cover. The ends are of square cross section and the volume is 250 square cms. If the depth of the tray is y cm, neglecting the thickness of the...
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What is the missing number?
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A rope 120 metres long can be formed into any shape so long as the 2 ends are touching. Find the maximum area that can be enclosed by the shape.
A farmer is to enclose an area of land using a dry stone wall and 200 metres of picket fencing. The rectangular plot is for home grown produce to meet his ever growing family's needs. You must show...
A 1000 kg car is placed on the large piston of an hydraulic system whose radius is 5 metres. a.)What is the minimum force exerted by the large piston to lift the car? b.)If the mechanical advantage of...
In a bag there are some red sweets and some green sweets. The ratio of red sweets to green sweets is 2:3 Two sweets are taken at random and eaten. The probability they're both green is 35% How many...
There are N sweets in a bag. Eight of the sweets are red. The rest of the sweets are green. Jack takes a random sweet from the bag. He eats the sweet. Jack then takes at random another sweet from the...
I moisten the raw ingredients of my compost bin with 'organic recycled beer and wine'. I also daily swallow tablets to thin my blood, reduce my BP and fight cholesterol. Could I be producing compost...
Using 2 switches of the type 'single pole double throw', sketch an electrical diagram to show how an upstairs light bulb can be controlled from either the hall downstairs or from the upstairs landing....
Neighbour and his Dad possess 2 x 2500 Watt loudspeakers with built in Amplifiers. He believes on max output they would draw nearly 20 Amps each. He is afraid this will trip the 32Amp ring breaker....
A bag contains exactly 7 red sweets, the other remaining sweets are all yellow. Two sweets are taken from the bag at random and eaten. The probability of eating 2 yellow sweets is 30% Find how many...
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