Answer:
0.182 m/s
Explanation:
m1 = 30,000 kg, m2 = 110,000 kg, u1 = 0.85 m/s
let the velocity of loaded freight car is v
Use the conservation of momentum
m1 x u1 + m2 x 0 = (m1 + m2) x v
30,000 x 0.85 = (30,000 + 110,000) x v
v = 0.182 m/s
Answer:
Explanation:
It is determined by the amount of cold or hot water in the mixture to know if it will be closer to been hot or cold.
The answer is b. Electromagnetic waves do not need a medium to travel through.
Answer:
Middle childhood
Explanation:
<em>Middle childhood happens around ages 6 to 12,</em> is a stage in the human development characterized by the steady rate of physical growth of the individual in contrast with the fast rate of emotional, cognitive and emotional development that will prepare them for future stages (adolescence and adulthood).
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Answer:
energy is equal to mass times latent heat.
so, E = 1.4×2.32×10^4=44800 j
