A Train Traveling Very Fast (V = 0

question 12

Multiple Choice

A train traveling very fast (v = 0.6c) has an engineer (E) at the front, a guard (G) at the rear and a passenger (S') exactly half way between them.Both E and G are equipped with yellow signaling lamps.The train passes a station, closely observed by the station master (S) .Both E and G use their lamps to send signals.According to both S and S' these signals arrive simultaneously at the instant S' is passing S.According to S, the signal from E will look ______ and that from G will look _____:

• A)red, blue
• B)yellow, yellow
• C)blue, red
• D)blue, blue
• E)red, red

---

Definitions:

Periodic System

Another term for the periodic inventory method, emphasizing its cyclical approach to inventory management and cost determination.

Voucher System

A control mechanism in accounting where vouchers are used to authorize the disbursement of cash and record financial transactions.

Net Method

A method of recording purchases or invoices at their net price after deducting any purchase discounts.

Invoice Paid

A document or notation indicating that payment has been made for a particular invoice, clearing the amount owed.