Which of the following states is not possible for n = 4?
1.4h
2.4f
3.4d
4.4s
1
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A 3.00 kg mass is located at x = 2.0 cm and y = -4.0 cm. A 3.00 kg mass is located at x = -5.0 cm and y = 2.0 cm. A 4.00 kg mass is located at x = -3.0 cm and y = -3.0 cm. Where is the location of the center of mass (x, y)?
A. (-0.10 cm, -0.50 cm) B. (-2.1 cm, -1.8 cm) C. (+2.1 cm, -1.8 cm) D. (-2.1 cm, +1.8 cm) E. (+1.1 cm, -2.0 cm)
Suppose the star Sirius were moved to a distance 7 times closer to Earth than it is now. How would its parallax angle change?
A) It would stay the same. B) It would get smaller. C) It would get larger.
Two balls have the same size and surface texture, but one is twice as heavy as the other. How many times larger is the terminal speed of the more massive ball falling through air than that of the lighter ball?
A. The balls fall with the same speed in air. B. The massive ball’s terminal speed is [2]1/2 times larger than the other’s. C. The massive ball’s terminal speed is 2 times larger than the other’s. D. The massive ball’s terminal speed is 4 times larger than the other’s. E. The massive ball’s terminal speed is some other multiple of the other’s (specify).
A sample of blood is placed into a centrifuge of radius 15.0 cm. The mass of a red corpuscle is 3.0 × 10^-16 kg, and the centripetal force required to make it settle out of the plasma is 4.0 × 10^-11 N. At how many revolutions per second should the centrifuge be operated?