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# j

• ### is an iPad 6 okay for school use and will it be okay for like 3 years?

the ipad 7 is literally the same as the ipad 6. I'm just concerned that the model is older so it might not last long

1 AnswerLaptops & Notebooks11 months ago
• ### I need an iPad for school but do not know which one to get?

I am an engineering student so I have to take a lot of notes for a lot of classes . I was thinking about getting an iPad so I can save all of my notes on one space and I can save a lot of paper. My budget is about \$580 so I need to be careful with what I get.

First I've been really liking the iPad air 3 but its kind of pricy for the 254 GB storage. Like above my budget lol. I have several options to choose from such as the iPad 6 because it is cheaper than the 7 but still has the same capabilities. The thing I'm concerned about for that one is the longevity. I dont want it to die on me since it is an older version. Another option is the iPad mini 5 however the screen is just too small so I'm not sure if I'll have an easy time taking notes on it. The one I'm looking at the most is the iPad 3 because it has cool features but its a bit pricy. which ones would be better to choose from? or will i be okay with just the 64 GB ipad 3?

I also need to budget for apple care and a case. I am also looking into an apple pencil. Please give me things you hate about the apple pencil or any concerns about any of the iPads. I just need some guidance lol.

4 AnswersLaptops & Notebooks11 months ago
• ### Hi I need urgent university physics electricity and magnetism help )-:?

"A current of I=8.0A is flowing in a typical extension cord of length L=3.00m. The cord is made of copper wire with diameter d=1.5mm.

The charge of the electron is e=1.6×10^−19 C. The mass of the electron is m=9.1×10^−31 kg. The resisitivity of copper is ρ=1.7×10^−8 Ω⋅m. The concentration of free electrons in copper is n=8.5×10^28 m^−3."

So I got the drift velocity as 3.3*10^-4 m/s

and I got the volume of the wire as 5.3*10^-6 m^3.

The actual question I need help on is

"The population of the Earth is roughly eight billion people. If all free electrons contained in this extension cord are evenly split among the humans, how many free electrons (Ne) would each person get?"

Physics1 year ago
• ### I m trying to understand electricity and magnetism. Mastering physics help please!?

Problem:

What is the force F on the 1 nC charge at the bottom? (Figure 1)

Write your answer as two vector components, separated by a comma. Express each component numerically, in newtons, to two significant figures.

Figure 1:

http://session.masteringphysics.com/problemAsset/1...