use screwdriver and pry open, too simple
They are powered by a normal 12 volt car battery.
The 19 inch rechargeable batteries is what you need for a Remington cordless mower.
it says on the back. they are little 337 batteries
doppler effect
the frequency of the wavelength
Chemical change
The Doppler effect
They utilize the power of the force concentrated through a crystal, not batteries.
Sirens is the plural of siren
Baseballs don't require electronics so you don't need batteries for them
change the batteries
Yes