All wheelchairs may be secured
so that the user is facing the curb side of the vehicle is true. The answer is
letter A. It provides a unique 180 degree powered rotation which makes it
possible to raise, lower and rotate fully.
Explanation:
3: the electricity is generated in the permanent magnet
Am sorry what can you be more specific
Explanation :
It is given that,
In the given figure all the three resistors are in series.
Current flowing in the circuit, 
Voltage, 
We know that in series circuit the current flowing in all resistors is same.
Using Ohm's law, we get:



Hence, this is the required solution.
The density is about 3.88. You just have to divide the mass and the volume. You can check this on a calculator, too. Hope this helped