In order to simulate weightlessness for astronauts in training, they are flown in a vertical circle. If the passengers are to experience weightlessness,
how fast should an airplane be moving at the top of a vertical circle with a radius of 2.5 km?
A) 79 m/s
B) 310 m/s
C) 260 m/s
D) 160 m/s
E) 510 m/s
D
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Current: In an electroplating process, it is desired to deposit 40 mg of silver on a metal part by using a current of 2.0 A. How long must the current be allowed to run to deposit this much silver? The silver ions are singly charged, and the atomic mass of silver is 108 g/mol. (e = 1.60 × 10-19 C, NA = 6.02 × 1023 atoms/mol)
A. 16 s B. 18 s C. 20 s D. 22 s
How many values of the magnetic quantum number, m?, correspond to a value of 4 for the orbital quantum number, ??
A) 3 B) 5 C) 8 D) 9 E) 7
The ______________ calendar is most used around the world
a. Roman b. Julian c. Gregorian d. Babylonian
An object of mass 5.0 kg revolves at 600 rpm in a horizontal circle of radius 1.5 m. Determine the
a) period of the object's motion in seconds, b) object's speed, c) magnitude of the centripetal acceleration, d) magnitude of the centripetal force acting on the object.