Europa is most likely made of
A) pure water ice
B) rock and water ice
C) rock and iron
D) pure rock
B
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The Moon is a large moon compared to the size of its host planet
a. True b. False Indicate whether the statement is true or false
Rotational Kinetic Energy: A solid uniform sphere is rolling without slipping along a horizontal surface with a speed of 5.5 m/s when it starts up a ramp that makes an angle of 25° with the horizontal. What is the speed of the sphere after it has rolled 3.0 m up as measured along the surface of the ramp?
A. 4.0 m/s B. 8.0 m/s C. 1.9 m/s D. 2.2 m/s E. 3.5 m/s
The density of aluminum is 2700 kg/m3. If transverse waves propagate at 34 m/s in a 4.6-mm diameter aluminum wire, what is the tension on the wire?
A) 52 N B) 31 N C) 42 N D) 62 N
A 15-?F air-filled capacitor is connected to a 50-V voltage source and becomes fully charged. The voltage source is then removed and a slab of dielectric that completely fills the space between the plates is inserted
The dielectric has a dielectric constant of 5.0. (a) What is the capacitance of the capacitor after the slab has been inserted? (b) What is the potential difference across the plates of the capacitor after the slab has been inserted?