you are given three piles of 10 pesos coins. one pile is made up of counterfeit coins heavier than the genuine ones. explain how can pick out the pile of counterfeit coins in one step procedure using an equal arm balance
The idea is that the counterfeit coin is lighter than the others, but not different enough to find by hand.Divide the coins into 3 groups of 3. Reserve one group and put the other two groups onto the balance scale.If they are the same, the counterfeit is one of the reserved group. Otherwise, the lighter pan has the counterfeit.Put one coin on each side of the scale and keep one off. If they are the same, the one not weighed is the counterfeit. Otherwise it is the lighter one.
boss, boss, boss
Before you begin using an equal arm balance, you must make sure the riders are an equal distance apart, and make sure the balance is balanced. Then, place the object(s) on one side of the balance, and the object(s) that you want to compare them to. Whichever object is closer to the ground is heavier. If the objects are equally levelled, they have equal mass.
if the question allows you to use a scale once, use it in one of 2 ways. 1. Put all stacks of coins on the scale and remove 1 stack at a time, when the weight reaches the the correct amount for the number of stacks are on the scale then then counterfeit has been removed. 2. take 1 coin from stack 1, 2 coins from stack 2, etc. when looking at the numbers if each coin weights, lets say, 1 ounce, and stack 3 is the problem, the scale will read 3 ounces too many. If you can't use a scale, then sorry, your out of luck.
you are given three piles of 10 pesos coins. one pile is made up of counterfeit coins heavier than the genuine ones. explain how can pick out the pile of counterfeit coins in one step procedure using an equal arm balance
The details of the method depend on -- How many coins are there in the whole pile ? -- How many of those are counterfeit ? -- Are counterfeit coins heavier or lighter than genuine coins, or is that not known ?
The idea is that the counterfeit coin is lighter than the others, but not different enough to find by hand.Divide the coins into 3 groups of 3. Reserve one group and put the other two groups onto the balance scale.If they are the same, the counterfeit is one of the reserved group. Otherwise, the lighter pan has the counterfeit.Put one coin on each side of the scale and keep one off. If they are the same, the one not weighed is the counterfeit. Otherwise it is the lighter one.
Half dimes from the 1700's and 1800's.
boss, boss, boss
four dimes equal 40 cents ten nickels equal fifty cents ten pennies equal 10 cents Add the 3 groups of coins for one dollar
Before you begin using an equal arm balance, you must make sure the riders are an equal distance apart, and make sure the balance is balanced. Then, place the object(s) on one side of the balance, and the object(s) that you want to compare them to. Whichever object is closer to the ground is heavier. If the objects are equally levelled, they have equal mass.
Using a trial balance, you can only estimate a weight by having both sides at an equal level and knowing the value of the weights on one side.
......? Please repeat the question in English.
......? Please repeat the question in English.
if the question allows you to use a scale once, use it in one of 2 ways. 1. Put all stacks of coins on the scale and remove 1 stack at a time, when the weight reaches the the correct amount for the number of stacks are on the scale then then counterfeit has been removed. 2. take 1 coin from stack 1, 2 coins from stack 2, etc. when looking at the numbers if each coin weights, lets say, 1 ounce, and stack 3 is the problem, the scale will read 3 ounces too many. If you can't use a scale, then sorry, your out of luck.
To find the mass of an object using a physical balance, place the object on one side of the balance and add standard weights to the other side until the balance arm is horizontal. The sum of the standard weights used is equal to the mass of the object.