An up quark (u) has a charge of +2/3 and a down quark (d) has a charge of -1/3. Which of the following describes a neutron?
A) uuu
B) uud
C) udd
D) ddd
C
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What is the gravitational force on a 20-kg satellite circling the Earth (radius = 6.4 × 10^6 m, mass = 6.0 × 10^24 kg) with a period of 5.0 h?
a. 88 N b. 55 N c. 36 N d. 98 N e. 18 N
Exhibit 14-1
A square of side 
is removed from one corner of a square sandwich that has sides of length L. The center of mass of the remainder of the sandwich moves from C to C'.
?
?
Use this exhibit to answer the following question(s).
Refer to Exhibit 14-1. The distance from C to C' is
A.
.B.
.C.
.D.
.E.
.The process of planet formation in the early solar system is best described by which of the following terms?
A) precipitation B) consolidation C) condensation D) crystallization
An electron determined to be at y = 2.000 ± 0.0010 cm has what minimum uncertainty in velocity?
What will be an ideal response?