Triton, the largest moon of Neptune was probably once
A) a Kuiper Belt Object
B) a planet
C) an asteroid
D) a comet
A
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A solenoid of length 0.700 m having a circular cross-section of radius 5.00 cm stores 6.00 µJ of energy when a 0.400-A current runs through it. What is the winding density of the solenoid? (?0 = 4? × 10-7 T • m/A)
A) 327 turns/m B) 1080 turns/m C) 865 turns/m D) 472 turns/m E) 104 turns/m
Multiple-Object Accelerating Systems: Three boxes are pulled along a horizontal frictionless floor by a constant horizontal pull P. The boxes are connected by very light horizontal strings having tensions T1 and T2 as shown in the figure. Which of the following statements about the tensions is correct? (There could be more than one correct choice.)
A. T1 = P B. T2 = P C. T1 + T2 = P D. T2 > T1 E. T1 > T2
A 400-g stainless steel tea kettle containing 500 g of water is on top of the stove. The portion of the tea kettle that is in contact with the heating element has an area of 0.090 m2 and is 2.0 mm thick
At a certain moment, the temperature of the water is 75°C, and it is rising at the rate of 3C° per minute. What is the difference in temperature between the inside and the outside of the bottom of the tea kettle? The thermal conductivity of stainless steel is 16.3 W/(m•K) and the specific heat is 448 J/(kg•K). A) 2.2°C B) 1.5°C C) 1.1°C D) 0.50°C E) 0.015°C
What size capacitor must be placed in series with a 30. ? resistor and a 40. mH coil if the resonant frequency of the circuit is to be 1000. Hz?
A) 2.0 ?F B) 0.63 ?F C) 3.3 ?F D) 6.0 ?F E) 4.5 ?F