E drew a diagram of an electric generator.
Which best describes Dante's error?
There should be a battery connected to the brushes.
There should be one brush on each slip ring.
The slip rings should be touching each other.
The magnets should be above the armature and axle.
Slip ring
Brushes

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

the speed of the cart after 3 seconds of low fan speed is ⇒ 54.0 cm/s.

the speed of the cart after 5 seconds of medium fan speed is ⇒ 120.0 cm/s.

the speed of the cart after 2 seconds of high fan speed is ⇒ 64.0 cm/s. 

just did the lab.