Density can be defined as the measure of mass of a substance per unit volume.
All vehicles are required to stop within 15 FEET of the railroad crossing when a train is approaching.
Superconductor, conductor, semiconductor, insulator
Yes because the heat is to hot and would melt the earth layers so it would go through
Brainiest plz
Explanation:
The attached figure shows data for the cart speed, distance and time.
For low fan speed,
Distance, d = 500 cm
Time, t = 7.4 s
Average velocity,

Acceleration,

For medium fan speed,
Distance, d = 500 cm
Time, t = 6.4 s
Average velocity,

Acceleration,

For high fan speed,
Distance, d = 500 cm
Time, t = 5.6 s
Average velocity,

Acceleration,

Hence, this is the required solution.