Scientists have confirmed that the particles of Saturn's rings are not ____
a. held by Saturn's moons
b. within the Roche limit
c. chunks of ice
d. ancient
e. primordial
e
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Velocity: A motorist makes a trip of 180 miles. For the first 90 miles she drives at a constant speed of 30 mph. At what constant speed must she drive the remaining distance if her average speed for the total trip is to be 40 mph?
A. 45 mph B. 50 mph C. 52.5 mph D. 55 mph E. 60 mph
An electron is accelerated from rest through a potential difference of 3750 V. It enters a region where the magnetic field is 4.0 mT perpendicular to the velocity of the electron. Calculate the radius of the path this electron will follow
A) 1.2 cm B) 2.2 cm C) 3.2 cm D) 4.2 cm E) 5.2 cm
An auto accelerates forward from 7.0 m/s at a uniform 0.71 m/s2. It travels a distance of 1.033 km while accelerating. (a) How fast is the auto moving just as it is traveled the 1.033 km? (b) How many seconds did it take to travel the 1.033 km?
What will be an ideal response?
The center of mass (or center of gravity) of a two-particle system is at the origin. One particle is located at (3.0 m, 0.0 m) and has a mass of 2.0 kg. The other particle has a mass of 3.0 kg. What is the location of the 3.0-kg particle?
A) (-3.0 m, 0.0 m) B) (-2.0 m, 0.0 m) C) (2.0 m, 0.0 m) D) (3.0 m, 0.0 m)