Please make sure to justify and show your procedure with each step. Please make sure to answer all the questions. Consider the possibility of a new design for an electric train. The engine isdriven by the force on a conducting axle due to the vertical component of the Earth'smagnetic field. To produce the force, current is maintained down one rail, through aconducting wheel, through the axle, through another conducting wheel, and then back tothe source via the other rail.What current is needed to provide a modest 10 kN force? Take the vertical componentof Earth's field to be 10 µT and the length of the axle to be 3.0 m.At what rate would electric energy be lost for each ohm of resistance in the rails?· Is such a train totally or just marginally unrealistic?

Given: Force,F=10kN=10×103NMagnetic Field,B=10μT=10×10-6TLength,L=3mAngle,θ=900

Answered: Consider the possibility of a new…

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This sheet is not actually being graded. It's just a test review. I need help with 3-5.
The laboratory balances have a precision of 0.01g. If you are obtaining the mass of an approximately 5 gram sample, which of the following is a proper way to record this measurement in your laboratory notebook and on your report sheets. 4.92 g 4.92 4.925 g 5.00 g
Please answer a - h and explain the steps you took.
Problem 2. 1-3
You will be using these rules in your calculations. As an example of a sample calculation, find the volume of a rectangular solid: V = Lx W x H V = (25.95 cm)(5.87 cm)(83 cm) V = 13000 cm³ = 1.3 x 10“ cm3 Note that when you do this calculation in your calculator, you will have an answer of 12643.0995. However, the 83 cm limits your answer to 2 significant figures, so you must round the final answer to 2 significant figures. Remember you need to keep the place value of the significant figures! The scientific notation helps clarify that none of the zeros are significant.
I recently asked this question, but the answers are not loading. I don't understand part a, and the formulas used. I guess I don't understand how to derive the formulas into what you need. Could you explain, step by step?