If a future lander mission to Europa confirms the existence of organic molecules at the surface, the next mission would most likely deploy a probe that resembled
A) a submarine
B) a ship
C) a car
D) an airplane
A
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A 4.00 kg solid sphere of radius 5.00 cm starts from rest and rolls without slipping down a 30.0 degree incline. The acceleration of the center of mass of the solid sphere is
A. 1.50 
B. 2.00
C. 2.50
D. 3.00
E. 3.50
The common name for CH4 is ______________
Fill in the blank(s) with correct word
The coefficients of static and kinetic friction between a 3.0-kg box and a horizontal desktop are 0.40 and 0.30, respectively. What is the force of friction that the desktop exerts on the box when a 15-N horizontal push is exerted on the box?
A) 12 N B) 8.8 N C) 15 N D) 6.0 N E) 4.5 N
A solid cylinder of radius R = 1.0 m and mass 10 kg rotates about its axis. When its angular velocity is 10 rad/s, its angular momentum (in kg×m2/s) is
a. 50. b. 20. c. 40. d. 25. e. 70.