23. Convert -40°F into K C. 201 K d. 313 K a. 233 K b. -40K 24. If two fire crackers produce a sound level of 140 dB and

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23 Convert 40 F Into K C 201 K D 313 K A 233 K B 40k 24 If Two Fire Crackers Produce A Sound Level Of 140 Db And 1 (41.76 KiB) Viewed 45 times

23. Convert -40°F into K C. 201 K d. 313 K a. 233 K b. -40K 24. If two fire crackers produce a sound level of 140 dB and 150 dB. What is the combine sound level? a. 290 dB b. 10 dB C. 145 dB d. 150.4 dB 25. At 17°C an aluminum rod has an inner diameter of 8.08cm and a brass ring has a diameter of 8.00 cm. If the temperature of expansion for brass is 1.9 x 105 (°C) and the temperature coefficient of expansion for aluminum is 2.4 x 10-5 (°C) to what temperature the brass must be heated, so the ring be heated so that it will just slop over the rod? a. 543.3 °C b. 526.3°C C. 399.7°C d. 433.7°C 26. 2500 J heating is added from a system and 1800 J of work is done by the system. What is the change of internal energy of the system? a. 4300) b. -700 c. 700 d. - 4300) 27. A rock group is playing in a club. Sound emerging from the door in all direction uniformly. If the decibel level is 60 dB at a distance 0.6 m from the door. What is the decibel 1.2 m from the door? d. 45 dB C. 54 dB b. 15 dB a. 30 dB