Energy changes in a system, and the ways energy is stored before and after such changes

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Question 22

Medium

An autonomous underwater vehicle (AUV) is designed for deep-sea exploration. It relies on a high-capacity rechargeable battery to power its scientific instruments and propulsion systems.

State the equation that relates energy transferred ( $E$ ), power ( $P$ ), and time ( $t$ ).

[1]

The onboard battery pack of the AUV can store $1.512 \times 10^7\text{ J}$ of energy. An inductive docking station charges the vehicle with a constant power output of $W1050\text{ W}$ . Calculate the time taken, in seconds, to fully recharge the battery pack from completely empty.

[2]

While cruising at its exploration depth, the potential difference across the AUV's propulsion motor is $V60\text{ V}$ , drawing a current of $A8.0\text{ A}$ . Calculate the electrical resistance of the motor.

[2]

Energy changes in a system, and the ways energy is stored before and after such changes

Question 22

Energy changes in a system, and the ways energy is stored before and after such changes Questions

Energy changes in a system, and the ways energy is stored before and after such changes

Question 22

Energy changes in a system, and the ways energy is stored before and after such changes Questions