Answer:
the earthquake's epicenter is L = 1091.2 km away
Explanation:
if the P and S waves start from the same place (x=0) :
P would travel the distance L in , L = vP * tP
P would travel the distance L in , L = vS * tS
therefore
vP * tP= vS * tS
if the difference in time d= tS-tP → tS=d+tP , then
vS * tS= vP * tP
vS *(d+tP) = vP * tP
vS*d + vS*tP = vP * tP
vS*d = vP * tP - vS*tP = (vP - vS) * tP
tP = vS*d / (vP - vS)
replacing values
tP = vS*d / (vS - vP) = 5.1 km/s * 1.5 min*60 s/min / ( 8.8 km/s - 5.1 Km/s) = 124 s
therefore
L = vP*tP = 8.8 km/s * 124 s = 1091.2 km
Answer:
B. Marginal cost equals long-run average total cost.
Explanation:
The zero profit condition implies that entry continues until all firms are producing at minimum long run average total cost. Since the marginal cost curve cuts the long run average total cost curve at its minimum point, marginal cost and long run average total cost must be equal in long run equilibrium.
Distance = (speed) x (time)
Distance = (3 x 10⁸ meter/second) x (1 hour)
Distance = 3 x 10⁸ meter-hour per second
Distance = 3 x 10⁵ kilometer-hour per second
Hmmm. That answer is perfectly correct and totally useless. We have no idea how far one meter-hour per second is. It's a unit we never use. We'd better convert the answer to a unit of length that we use every day.
(3 x 10⁵ km-hour/sec) x (3,600 sec/hour) =
(3 x 10⁵ x 3,600) (km-hour-sec/hour-sec) =
1.08 x 10⁹ km
THAT's it ! A pulse of light in vacuum travels 1.08 billion km in one hour.
Answer:
one of the characteristics of a mammal is their several hollow bones another is their three chambered heart and the last is highly developed nervous system
Explanation:
the reason i picked those three is because not all mammals live their life on land and also mammals font have internal fertillization when they are done they take care of their babies and when they grow up they live their own life