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You are given 8 balls that are identical 1 of them is heavier than the rest You are given a scale and 2 attempt How do you find the heaviest ball?
Wiki User
∙ 14y ago
The key here is to understand that the scale can distinguish 3 cases, not just 2.
As a first step, put 3 balls on one side, and 3 on the other. If one side or the other is heavier, that side will have the heavy ball. If the two weight the same, the heavy ball is one of the other 2.
Assuming the ball is in one of the groups of 3 you weighed at first, continue weighing one on each side. Once again, you have three cases. Left side is heavier (that is the heavy ball), right side is heavier (that side is the heavy ball), or both weigh the same (the heavy ball is the third one, which you didn't weigh).
The key here is to understand that the scale can distinguish 3 cases, not just 2.
As a first step, put 3 balls on one side, and 3 on the other. If one side or the other is heavier, that side will have the heavy ball. If the two weight the same, the heavy ball is one of the other 2.
Assuming the ball is in one of the groups of 3 you weighed at first, continue weighing one on each side. Once again, you have three cases. Left side is heavier (that is the heavy ball), right side is heavier (that side is the heavy ball), or both weigh the same (the heavy ball is the third one, which you didn't weigh).
The key here is to understand that the scale can distinguish 3 cases, not just 2.
As a first step, put 3 balls on one side, and 3 on the other. If one side or the other is heavier, that side will have the heavy ball. If the two weight the same, the heavy ball is one of the other 2.
Assuming the ball is in one of the groups of 3 you weighed at first, continue weighing one on each side. Once again, you have three cases. Left side is heavier (that is the heavy ball), right side is heavier (that side is the heavy ball), or both weigh the same (the heavy ball is the third one, which you didn't weigh).
The key here is to understand that the scale can distinguish 3 cases, not just 2.
As a first step, put 3 balls on one side, and 3 on the other. If one side or the other is heavier, that side will have the heavy ball. If the two weight the same, the heavy ball is one of the other 2.
Assuming the ball is in one of the groups of 3 you weighed at first, continue weighing one on each side. Once again, you have three cases. Left side is heavier (that is the heavy ball), right side is heavier (that side is the heavy ball), or both weigh the same (the heavy ball is the third one, which you didn't weigh).
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoThe key here is to understand that the scale can distinguish 3 cases, not just 2.
As a first step, put 3 balls on one side, and 3 on the other. If one side or the other is heavier, that side will have the heavy ball. If the two weight the same, the heavy ball is one of the other 2.
Assuming the ball is in one of the groups of 3 you weighed at first, continue weighing one on each side. Once again, you have three cases. Left side is heavier (that is the heavy ball), right side is heavier (that side is the heavy ball), or both weigh the same (the heavy ball is the third one, which you didn't weigh).
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If you have 7 tennis balls 1 is heavier than the others and a balance How do you find which one is the heaviest only using the balance twice?
1- Take ou one ball and slit the other six into two groups of three balls 2- put the two groups in the balance ( first use ) and if they are the same weight then the ball you took out in the first place is the heavier if not and one group is heavier than the other then the heavier ball is in that group so you can exclude the other group and the ball you took out at first. 3- If one group is heavier than the other then you take one ball from that group ( it has 3 balss remember? ) and you weight the other two remaining balls ( second and last use of the balance ) if the two balls have the same weight then the ball you took out is the heavier one if not look to the balance to see which of the balls is lower and there is your answer. Please, tell me if you understood : )
How can you tell which of three balls is the lightest or heaviest using a simple balance that consists of two pans?
Tough question to get into one sentence! You can do it in two weighings. Select any two of the balls and place one on each pan. If the scale balances, the third ball is the oddball. A second comparison will determine whether the oddball is lighter or heavier than the other two balls. Simply replace one of the first two balls with the oddball. If the oddball is heavier, its pan will drop; if it's lighter, its pan will rise. But what if the scale fails to balance the first time? (It is twice as likely that the scale will fail to balance when selecting two of the three balls at random for the first comparison!) If the scale fails to balance on the first comparison of two randomly selected balls, then you know that the oddball is on the scale, but you do NOT know which one it is, and you don't know whether it's heavier or lighter than the other two. A second comparison will resolve those issues. Remove the lighter ball from its pan and replace it with the third ball. If the scale remains out of balance, then you know that the heavier ball is the oddball, which is, of course, heavier than the other two. If, however, the scale balances, then the ball you removed is the oddball and is lighter than the other two.
Is 1 kg of sand heavier than 1 kg of polystyrene balls?
sexy boobs
What is the total momentum between two identical balls traveling toward each other at the same speed from opposite directions?
They have identical momentum before the collision . The total momentum will the the same before and after the collision. When the balls collide they will bounce apart both with same force and so the same momentum as originally - but in opposite directions. This assumes no energy loss in an ideal elastic collision.
You have 9 tennis balls. One is slightly heavier than the rest but you cannot tell by looking... or even holding. You also have a balance scale. How would you go about finding the heavy ball while usi?
Answer = Maximum of three steps to find heavy ball. Put one tennis ball aside and put the other 8 on the scale - 4 on each side. If the scale is balanced you're done - the one you put aside is the heavy ball If not Remove the 4 balls on the light side of the scale. The heavy ball is one of the four still on the scale. Spit these four in two on each side of the scale. Remove the two on the light side of the scale. The heavy ball is one of the two remaining balls on the scale. Split the two remaining balls. Your done. Solution #2 - heavier ball found in two steps: Step 1: group 9 balls in sets of 3. Reserve 3 balls(a), put 3 on each side of scale(b) and (c). Observe that heavier ball is in one of three sets, (a), (b) or (c) - either the scale side that dropped or the reserved set, if the scale balanced. Step 2: Split the set with the heavier ball - reserve one and place one on each side of the scale. Observe that heavier ball is one of the 3 balls, - either the scale side that dropped or the reserved ball, if the scale balanced. Solved in two steps.
If you have 7 tennis balls 1 is heavier than the others and a balance How do you find which one is the heaviest only using the balance twice?
1- Take ou one ball and slit the other six into two groups of three balls 2- put the two groups in the balance ( first use ) and if they are the same weight then the ball you took out in the first place is the heavier if not and one group is heavier than the other then the heavier ball is in that group so you can exclude the other group and the ball you took out at first. 3- If one group is heavier than the other then you take one ball from that group ( it has 3 balss remember? ) and you weight the other two remaining balls ( second and last use of the balance ) if the two balls have the same weight then the ball you took out is the heavier one if not look to the balance to see which of the balls is lower and there is your answer. Please, tell me if you understood : )
What does the name balpreet mean?
it means that you have the heaviest and the fatest balls
When did golf balls change in size?
Golf balls are heavier when frozen.
Why are pol-lo balls heavier than ping pong balls?
Because they are!
If you have 9 identical balls all weighing 100 gms except one which is 101gms?
Then the one weighing 101 gms isn't part of the 'identical' balls.
Suppose you had 8 billiard balls and one of them was slightly heavier?
1) take pair of 3 balls first and weigh against each other 2) if same then weigh remaining two balls 3) else wiegh 2 balls out of 3 heavier balls
There are 8 billiard balls, and one of them is slightly heavier, but the only way to tell was by putting it on a weighing scale against another What is the fewest number of times you'd have to use the?
You need only use the scale 3 times to find the heaviest ball.
How do you put ten identical balls on a surface so that you can have 5 lines of balls with 4 balls on each line?
are you talking about human balls? YOU CANT DO IT.
There are 8 billiard balls and one of them is slightly heavier but the only way to tell was by putting it on a weighing scale against another What is the fewest number of times you'd have to use th?
You need only use the scale 3 times to find the heaviest ball.
What is the minimum no of weighings to detect a heavier ball out of 8 balls?
Two. Take 3 balls and 3 balls. Leave 2 on the table. If the 3 and 3 balance set them aside and weigh the remaining 2 balls and you know which one is heavier. Done. If they don't balance, take the heavier 3, place one ball on the table and balance the other 2. If they balance, the one on the table is heavier. Done. If they don't, you know which one of the two is heaver. Done.
What color are cheetah balls?
The color and shape is Identical to the average Cheetos
What is heavier a ton of feathers or a ton f bowling balls?
They equal the same
