Spring tides occur at ____
a. new moon and first quarter moon
b. new moon and full moon
c. first quarter moon and third quarter moon
d. first quarter moon and full moon
e. third quarter moon and full moon
b
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A point charge of 3.00 ?C is located on the y-axis at y = 4.0 m, another point charge of 6.0 ?C is located on the x-axis at x = 5.0 m, and a third charge of 7.2 ?C is located at (5.0 m, 4.0 m). What is the magnitude of the force on the 7.2 ?C charge?
A. 
B. 
C. 
D. 
E. 
Rotational Dynamics: A torque of 12 N ? m is applied to a solid, uniform disk of radius 0.50 m. If the disk accelerates at 1.6 rad/s2 what is the mass of the disk?
A. 60 kg B. 45 kg C. 30 kg D. 15 kg
An electric current can consist of
a. positive ions flowing in a liquid. b. negative ions flowing in a liquid. c. electrons flowing in a wire. d. all of the above.
The focal lengths of the objective lens and the eyepiece in a microscope are 0.29 cm and 2.50 cm, respectively. An object is placed at 0
30 cm from the objective lens and the image of this object is viewed with the eyepiece adjusted for minimum eyestrain for persons with a near point of 25 cm. The magnitude of the final overall magnification of the microscope is closest to A) 200 B) 500 C) 100 D) 410 E) 300