Astronaut Spud Nick Is Space-Traveling from Planet X to Planet

question 42

Multiple Choice

Astronaut Spud Nick is space-traveling from planet X to planet Y at a speed of 0.60c relative to the planets,which are at rest relative to each other.When he is precisely halfway between the planets,a distance of 1.0 light-hour from each one as measured in the planet frame,nuclear devices are detonated on each planet.The explosions are simultaneous in the frame of the planets.What is the difference in the time of arrival of the flashes from the explosions as observed by Spud?

• A) 300 min
• B) 150 min
• C) 75 min
• D) 0 min
• E) 113 min

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Definitions:

Current Account

Part of a country's balance of payments, including the trade balance, net income from abroad, and net current transfers, reflecting the difference between a nation's savings and its investment.

Balance of Payments

This is a record of all financial transactions made between consumers, businesses, and the government in one country with others.

Managed Floating Exchange Rate

A currency value system that allows its exchange rate to fluctuate in response to the foreign-exchange market but with central bank interventions to stabilize it when deemed necessary.

Flexible Exchange Rates

A foreign exchange system where exchange rates are determined by the supply and demand for currencies and can fluctuate freely.