12km = 12000m
12000m / 4 m/s = 3000s
just under one hour
Answer:
three times the original diameter
Explanation:
From the wire's resistance formula, we can calculate the relation between the diameter of the wire and its length:
Here, d is the wire's diameter, is the electrical resistivity of the material and R is the resistance of the wire. We have
Because any other radiation can be harmful<span />
KE= 0.5(m)(v^2)
KE= 250,000 J
Answer:
9.2 × 10^7 dm
Explanation:
(9.2×10^3 km) × (10^4 dm/km) = 9.2×10^7 dm