A neutron with a mass of 1.67 × 10-27 kg traveling east with a kinetic energy of 2.00 × 10-21 J collides perfectly elastically with a helium nucleus with a mass 6.68 × 10-27 kg that is initially at rest
After the collision, the neutron has a kinetic energy 1.80 × 10-21 J. What angle was the neutron deflected during the collision? A)
142°
B)
117°
C)
38.0°
D)
180°
E)
32.8°
A
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Pressure: One of the dangers of tornados and hurricanes is the rapid drop in air pressure that is associated with such storms. Assume that the air pressure inside of a sealed house is 1.02 atm when a hurricane hits. The hurricane rapidly decreases the external air pressure to 0.910 atm. What net outward force is exerted on a square window of the house that is 2.03 m on each side? (1.00 atm = 1.01 × 105 Pa)
A. 4.59 × 104 N B. 5.19 × 104 N C. 4.82 × 105 N D. 5.42 × 105 N
Exhibit 5-1
A 2.30-kg mass is suspended from the ceiling and a 1.70-kg mass is suspended from the 2.30-kg mass, as shown. The tensions in the strings are labeled 
and 
.
?
?
Use this exhibit to answer the following question(s).
Refer to . A hand exerts an upward force of 6.70 N on the 1.70-kg mass. The magnitudes of the tensions are
A.
= 15.8 N; 
= 10.0 N.B.
= 15.8 N; = 16.7 N.C.
= 22.5 N; = 10.0 N.D.
= 22.5 N; = 16.7 N.E.
= 32.5 N; = 10.0 N.An electric dipole having dipole moment of magnitude p is placed in a uniform electric field having magnitude E. What is the magnitude of the greatest change in potential energy that can happen for this dipole in this field?
A.
B.
C.
D.
E.
When a 125-kg piece of equipment is hung from a steel wire of length 75 cm, it stretches the wire by 4.00 mm. If instead the wire had a length of 150 cm, but all else were the same, by what distance would the same equipment stretch the wire?
A) 4.00 mm B) 8.00 mm C) 2.00 mm D) 16.0 mm E) 1.00 mm