Sunday
May 19, 2013

# Posts by jd

Total # Posts: 47

Physics Electricity and magnetism
A current with sinusoidal time-dependence, whose peak value is 3.55 A and frequency is 463 cycles per second, passes through a long straight wire. A rectangular 72.2 cm × 32.5 cm loop of copper wire is located 80.2 cm from the wire and is coplanar with it. Calculate the ...

Physics
Thanks Elena. I was really stuck on the N=x/2πr. I didn't know that was a property. But I believe there is an error in the math z should be z= μ₀x²/4πL = .054 m Thanks again

Physics
You need to produce a solenoid that has an inductance of 2.51 μH . You construct the solenoid by uniformly winding 1.17 m of thin wire around a tube. How long, in centimeters, should the tube be?

Chemistry
If you have 200ml of 25% aqueous solution of ethanol, what volume of ethanol and water are in the solution?

physics
bullet of mass 15 gm is shot horizontally into a 15 kg block of wood attached to a spring of spring constant 1000 N/m. The bullet remains inside the block after impact. The force of the impact compresses the spring 10 cm. What is the velocity of the bullet?

Math
Linda has 7/8 yard of fabric. She used 2/3 of it to make a purse. How much fabric did she use?

math
a shirt is on sale for 15% off. what fraction represents the savings? ...is it 3/20th?

MATH
In a parking lot, there are 2 cars for every 3 trucks. What fraction of the vehicles are cars? Is it 1/50th?

heathrow
Jacksonville is the largest city in Florida. recently there were 852,460 people living in Jacksonville. Howw many thousands of people in all lived there? _____is in the hundred thousands place and has a value of _______________

math
*p squared equals twentyfive, so...

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