The karat is a dimensionless unit that is used to indicate the proportion of gold in a gold-containing alloy. an alloy that is one karat gold contains a weight of pure gold that is one part in twenty-four. what is the volume of gold in a 14.0-karat gold necklace whose weight is 1.25 n?

Volume,

Explanation:

It is given that, an alloy that is one karat gold contains a weight of pure gold that is one part in twenty-four.

14 karat of gold contains a weight of pure gold is,

The necklace contains 58% of gold, the weight of gold is :

The mass of gold is,

Let V is the volume of fold in 14 karat. Using the formula of density to find it as :

d is the density of gold,

So, the volume of fold necklace is . Hence, this is the required solution.

most voltage drop calculators want the distance between the source and destination. then internally, they double it so both the source and return wires are calculated. but you need to know which distance the calculator uses so you're not half of what you should be or double what you should be.

most circuit breakers will not take a #6 directly, so the electrician will have to splice on a smaller pigtail. you also have to upsize the grounding wire when you upsized the ungrounded (hot) wire (see note in 250.122). this will preclude using most cable assemblies, as a cable with #6 copper will most likely only have a #10 grounding conductor. you need a #6 grounding conductor if the circuit is 20a. a #8 cable is no better, as it will have a #10 grounding conductor too. but most 20a breakers will take a #8 directly.

in your related post, you didn't say what type of load this is. if it is a light or heater, voltage drop won't be a big issue. if this is a motor, the current needs are huge at startup and the voltage drop can pose a problem. if this is a motor, knowing if the motor is under much load during startup will answer the voltage drop effect (a saw is easier to start than a compressor).