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From its discovery in 1930 up until 2006, Pluto was considered the ninth planet in the Solar System. After the International Astronomical Union revised and solidified the definition of a planet, poor Pluto was demoted to "dwarf planet," with the discovery of similar icy bodies beyond Neptune. A similar reclassification occurred for Ceres in the 19th Century.
Do you think Pluto should still be designated a planet, or not? What about the other four classified dwarf planets? Consider the IAU definition and the characteristics of both planets and small bodies in the Solar System, and defend your position.
You now know that there is an opposite and equal reaction based on Newton's third Law and perhaps you are worried about the force of that rock hitting your spaceship (Newton's 1st Law)! Find does Newton second law play a role here
In a mass spectrometer, a single charged particle (charge e) has a speed of 1.0 x 106 m/s and enters a uniform magnetic field of 0.20 T. Determine what is the mass of the particle
A 0.580kg glider on an air track is attached to the end of an ideal spring with force constant 458 N/m; it undergoes simple harmonic motion with an amplitude of 4.00×10?2 m. Compute the maximum speed of the glider. Compute the speed of the glider ..
A long stick has a mass of 0.5 kilogram and a radius of gyration of 4.1 meter. Find which is harder to swing in a circle, the long stick or the barbell
Blocks with masses of 3.0 kg, 4.0 kg, and 5.0 kg are lined up in a row on a frictionless table. All three are pushed forward by a 15N force applied to the 3.0 kg block. How much force does the 4.0 kg block exert on the 3.0 kg block
What are the dimensions of the constant Would you classify this equation as a general homogeneous equation? Explain.
Is the collision completely elastic
The Earth is constantly being bombarded by cosmic rays, which consist mostly of protons. what is the total charge incident on the atmosphere
An airplane has a cruising speed (speed of plane with respect to the air) of 559 mph. The wind is blowing at 56 mph 15° north of east.
Two ice-skaters, whose masses are 45 kg and 75 kg, holdhands and rotate about a vertical axis that passes between them,making one revolution in 2 s. Find the angular momentum of the system about their center of mass
a small metal bead labeled a has a charge of 25 nc. it is touched to metal bead b initially neutral so that the two
An archer shoots an arrow at a 73.0 m distant target, the bull's-eye of which is at same height as the release height of the arrow. At what angle must the arrow be released to hit the bull's-eye
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