Electrical and mechanical
Electric energy
Yes, you can use any kind of USB cable with a HP Laptop as long as the adapters match your computer.
The best keyboard to use with a laptop is the one that comes with your laptop, baring that there are a wide array of fold up or wireless keyboard.
60!
a mac
Why would you use a cordless mouse on top of your laptop? That's kind of a weird idea...
anykind
electricity because once its used on a laptop it cant be re used. heat energy because you don't re use the heat.
Radios use eletrical energy
Yes, iGoogle is free to use on any kind of computer.
potential energy
kinetic energy