Dwarf planet Pluto was discovered by perturbations of
A) Jupiter.
B) Saturn.
C) Uranus and Neptune.
D) all of the above
Answer: C
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________ was the first person to measure the circumference of Earth.
A. Galileo B. Aristarchus C. Eratosthenes D. Ptolemy E. Copernicus
A neutron star detectable by its rapid rotation and strong magnetic field is called a(n) ________
Fill in the blank(s) with correct word
Capacitances of 10. ?F and 20. ?F are connected in parallel, and this pair is then connected in series with a 30. ?F capacitor. What is the equivalent capacitance of this arrangement?
What will be an ideal response?
Two small balls, A and B, attract each other gravitationally, exerting a force of magnitude F on each other
If we now double both masses and the separation of the balls, what will now be the magnitude of the attractive force that they exert on each one? A) 16F B) 8F C) 4F D) F E) F/4