The rounding of the sharp edges and corners of rocks is called
What will be an ideal response?
Mechanical Weathering
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What is the rotational inertia of a solid iron disk of mass 41.0 kg with a thickness of 5.00 cm and radius of 30.0 cm, about an axis through the center and perpendicular to it?
A. 0.980 kg 
B. 0.761 kg
C. 1.85 kg
D. 2.29 kg
If the current in the 4.0-? resistor is 1.4 A, what is the magnitude of the potential difference, VA ? VB?
a.
69 V
b.
55 V
c.
62 V
d.
48 V
e.
31 V
The bond between carbon atoms in the molecule ethylene, H2C=CH2 is referred to as
A) an ionic bond B) a double bond C) a single bond D) a triple bond
The south pole of a bar magnet is moved toward a short helical coil of wire (solenoid) along the axis of the coil. The coil has 100 turns and the ends of the coil are connected to form a closed circuit. If the coil is replaced with a single loop of the same type of wire, and the magnet is moved exactly as before, the magnet experiences a force that is
A. repulsive and 100 times larger. B. attractive and 100 times larger. C. the same as before. D. attractive and 100 times smaller. E. repulsive and 100 times smaller.