________ dwarfs are M dwarfs on the main sequence whereas _________ dwarfs are hot, dim, and not on the main sequence
Fill in the blank(s) with correct word
Red, white
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A 2.0-kg block slides on a frictionless 25° inclined plane. A force of 4.6 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block?
a. 1.8 m/s2 up the incline b. 2.3 m/s2 up the incline c. 6.6 m/s2 down the incline d. 1.8 m/s2 down the incline e. 2.3 m/s2 down the incline
A cyclotron of radius 0.25 m accelerates protons in a 1.7-T magnetic field. What is the kinetic energy of the protons when they leave the cyclotron?
A) 3.7 keV B) 7.8 keV C) 8.7 keV D) 7.8 MeV E) 8.7 MeV
____ is the brightest star in the constellation of Ursa Majoris
a. ? Ursa Majoris b. ? Ursa Majoris c. ? Ursa Majoris d. Wrong! Ursa Majoris is the name of the brightest star.
A player throws a football 50.0 m at 61.0° north of west. What is the westward component of the displacement of the football?
A) 64.7m B) 55.0 m C) 0.00 m D) 74.0 m E) 24.2 m