An airplane undergoes the following displacements, all at the same altitude: First, it flies 59km in a direction 30.0° east of north. Next, it flies 58.0km due south. Finally, it flies 100km 30.0° north of west
Use components to determine how far the airplane ends up from its starting point.
A) 71.5 km B) 73.0 km C) 68.7 km D) 74.4 km E) 70.1 km
A
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Gravitational Force: What is the distance from the center of the Moon to the point between Earth and the Moon where the gravitational pulls of Earth and Moon are equal? The mass of Earth is 5.97 × 1024 kg, the mass of the Moon is 7.35 × 1022 kg, the center-to-center distance between Earth and the Moon is 3.84 × 108 m, and G = 6.67 × 10-11 N ? m2/kg2.
A. 3.45 × 108 m B. 3.84 × 107 m C. 4.69 × 106 m D. 3.83 × 106 m E. 4.69 × 107 m
A capacitor in a single-loop RC circuit is charged to 85% of its final potential difference in 2.4 s. What is the time constant for this circuit?
a. 1.5 s b. 1.3 s c. 1.7 s d. 1.9 s e. 2.9 s
What do the radio pulses within the anticoded message sent in 1974 represent?
a. all the letters in the alphabet b. dots and dashes, like Morse code c. binary numbers, ones and zeroes d. Music, notes and measures e. the numbers one through ten
The following three appliances are connected to a 120-V house circuit: i) toaster, 1 325 W, ii) coffee pot, 650 W, and iii) microwave, 600 W. If all were operated at the same time, what total current would they draw?
a. 2.10 A b. 47.5 A c. 7.15 A d. 21.5 A e. 11.0 A