What do astronomers think is the cause of the active volcanism occurring on Jupiter's moon Io?
What will be an ideal response?
The activity you see in the Galilean moons must be driven by energy flowing outward, yet these objects are too small to have remained hot from the time of their formation. Io's volcanism seems to be driven by tidal heating. Io follows a slightly elliptical orbit caused by its interactions with the other moons. As Io's distance from Jupiter varies, the planet's gravitational field flexes the moon with varying tidal force, and the resulting friction heats Io's interior. That heat flowing outward causes the volcanism.
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A hydraulic press has its input piston depressed 20 centimeters while the output piston is raised 1 centimeter. A 1-newton input can lift a load of
A) 1 N. B) 10 N. C) 15 N. D) 20 N. E) none of the above
At an instant when a particle of mass 50 g has an acceleration of 80 m/s2 in the positive x direction, a 75-g particle has an acceleration of 40 m/s2 in the positive y direction. What is the magnitude of the acceleration of the center of mass of this two-particle system at this instant?
a. 60 m/s2 b. 56 m/s2 c. 40 m/s2 d. 50 m/s2 e. 46 m/s2
Two identical loudspeakers that are 5.00 m apart and face toward each other are driven in phase by the same oscillator at a frequency of 875 Hz. The speed of sound in the room is 344 m/s
If you start out standing midway between the speakers, find the shortest distance you can walk toward either speaker in order to hear a minimum of sound. A) 0.197 m B) 0.295 m C) 0.0983 m D) 0.393 m E) 0.590 m
The velocity of an object is given by the expression v(t) = 3.00 m/s + ( 2.00 m/s3)t2. Determine the position of the object as a function of time if it is located at x = 1.00 m at time t = 0.00 s
A) ( 2.00 m/s)t + 1.00 m B) (3.00 m/s)t + ( 0.667 m/s3)t3 C) ( 2.00 m/s)t D) 0.667 m E) 1.00 m + (3.00 m/s)t + ( 0.667 m/s3)t3