 # Question & Answer: A particle (charge = 50 mu C) moves in a region where the only force on it is an….. A particle (charge = 50 mu C) moves in a region where the only force on it is an electric force. As the particle moves 25 cm from point A to point B, its kinetic energy increases by 1.5 mJ. Determine the electric potential difference, V_B – V_A.

First step –

Flow rate through the first step = 9 minutes per customer

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Number of receptionists available = 3

The effective flow rate adjusted for single receptionist = 9/3 = 3 minutes

Second Step :

Flow rate through second step = 4 minutes

Number of cashiers = 4

The effective flow rate through the second step = 1 minute.

Third Step

The flow rate through third step = 6 minutes

Number of license processing stations = 5

The effective flow rate through the third step = 6/5 = 1.2 minutes

The effective flow rates are as follows –

• First step = 3 minutes
• Second step = 1 minute
• Third step = 1.2 minutes

The bottle neck step is the step with highest flow rate. That is step one with flow rate of 3 minutes. This will decide process flow rate. Therefore, process flow rate = 3 minutes per customer.

Therefore flow rate of the process = 60/3 = 20 customers per hour

If one server is added to the bottleneck resource, the effective flow rate for step one will be = 3/2 = 1.5

The new flow rate will be = 60/1.5 = 40 customer per hour