What minimum voltage does the power source have

Assignment Help Physics

Reference no: EM13981696

Over the summer you are working on an experiment to be sent on a robot probe to Mars. The experiment has a circuit constructedto melt a container of water for a nutrient broth experiment to test for the presence of life. The circuit is specified so that the 70 Ω resistor in the circuit at right starts embedded in a 400 g block of ice at -63 ^oC (an average day on Mars), melts it, and heats the water to 23^oC in 30 minutes time. Assume that all the power from the resistor is perfectly transferred to the water without any losses. What minimum voltage does the power source have to be for the circuit to do its job in at least 20 minutes?

It may not be possible to get solar panels that will provide the voltage needed at a steady enough rate so the mission planners may need to use charged capacitors in place of the battery in the circuit shown. If that substitution is made it will be a number of 500 milli farad capacitors each changed to a voltage of 500 volts. What is the minimum number of those capacitors will you need and should they be wired together in series or parallel in order to melt the ice in less than 20 minutes?

2424_Circuit constructedto melt a container of water.png

Reference no: EM13981696

Questions Cloud

What is the impact of microfinance on poverty : What is the impact of microfinance on poverty and what is the collateral effect of microfinance on child labour?

A young couple need your help to build : A young couple need your help to build their retirement fund. They recently received a tax free lump sum for $100,000 as their wedding gift. They are about 30 years each and have enough discretionary income no to worry about the market fluctuations i..

How much is the discount on a soccer ball : Orins sports store has a 40% off sale on all of its merchandise. How much is the discount on a soccer ball that was originally costs $30

Determine the spring constant of an exercise stretch cord : A person wants to determine the spring constant of an exercise stretch cord. He pulls the cord with a force probe that exerts a 45-N force on the cord, causing it to stretch 20cm. Using the Hooke's law find the spring constant of the cord. Assume ..

What minimum voltage does the power source have : What minimum voltage does the power source have to be for the circuit to do its job in at least 20 minutes? What is the minimum number of those capacitors will you need and should they be wired?

Kind of theoretical distribution : Plot a CDF based on these data. What kind of theoretical distribution do you think would be appropriate for these data? Why?

What is the appropriate manner for a hr professional : What is the appropriate manner for a HR professional to transition to the strategic role as executive partner on HR related issues? Should a job redesign be undertaken if it will improve efficiency even if the employees do not want it?

What is the farthest he can see clearly without eyeglasses : A person is wearing eyeglasses of strength -3 diopters. What is the farthest he can see clearly without eyeglasses?

How conditions of inequality based on social class : For this week's assignment, you are to write a 3-4 page research paper that discusses how conditions of inequality based on social class are manifested from the functionalist perspective. In your paper, give an example from each of these perspecti..

User Account

All Pages