4. a truck was detected exceeding the posted
speed limit of 60 km/h. how much faster than
the speed limit would it be going if it
travelled a distance of 10 km in 6 minutes?
(convert minutes into hours)

The truck is going 40 km/h  faster than the speed limit.

Explanation:

The fixed speed limit = 60km/h

distance travelled by the truck = 10 km

time taken t=6 minutes

we have convert 6 minutes into hour

1 hour=60 minutes

1 minute=1/60 hour  

6 minute=6/60  hour=1/10 h

Speed is obtained by dividing distance covered by time.

speed = distance/time = =100 km/h

difference between the speed of the car and the speed limit

=100-60 = 40km/h

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid