Which of the following would increase the gravitational force between two objects?
A) Moving the two objects closer together. B) Moving the two objects farther apart.
C) Reducing the mass of either one of the objects. D) None of these.
A
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About how far is the Oort cloud from the Sun?
a. 3 to 5 AU b. 45 to 60 AU c. 100 to 1000 AU d. 10,000 to 100,000 AU e. 4.6 billion AU
Which of these is constant for ALL types of electromagnetic radiation in a vacuum?
A) amplitude B) wavelength C) frequency D) velocity E) photon energy
An ambulance is generating a siren sound at a frequency of 2,000 Hz. The velocity of sound is 345.0 m/s. The observer and the ambulance are traveling toward each other at a velocity of 24.00 m/s. If the observer is stationary, what is the frequency of the siren perceived by the observer?
A. 2,032 Hz B. 2,150 Hz C. 2,220 Hz D. 2,575 Hz E. 2,750 Hz
For a particular spring, the spring constant
A. Increases as the spring is stretched B. Increases as the spring is compressed C. Decreases as the spring is compressed D. Is the same regardless of stretching or compressing