Examlex
A huge cannon is assembled on an airless planet having insignificant axial spin.The planet has a radius of 5.00 × 106 m and a mass of 3.95 × 1023 kg.The cannon fires a projectile straight up at 2000 m/s.An observation satellite orbits the planet at a height of 1000 km.What is the projectile's speed as it passes the satellite? (G = 6.67 × 10-11 N ∙ m2/kg2)
Stability
The state of being steady and unchanged, often referring to emotional or mental equilibrium.
Undercontrolled Temperament
A personality trait characterized by impulsiveness, lack of discipline, and difficulty in delaying gratification.
Anxious
Feeling anxious, troubled, or apprehensive, often in anticipation of an upcoming event or due to the unpredictability of its result.
Depressed
A state of low mood and aversion to activity affecting one's thoughts, behavior, feelings, and sense of well-being.
Q2: Four equal +6.00-μC point charges are placed
Q10: Incompressible water flows out of a large
Q18: If we double the root-mean-square speed (thermal
Q27: Motor oil,with a viscosity of 0.250 N
Q41: A nonuniform electric field is directed along
Q42: Two extremely large nonconducting horizontal sheets each
Q43: As measured in Earth's rest frame,a spaceship
Q50: Water,of density 1000 kg/m<sup>3</sup>,is flowing in a
Q52: On its own,a certain tow-truck has a
Q59: A 50.0-kg box rests on a horizontal