What is the volume, and its approximate uncertainty, of a sphere of radius 1.96 ± 0.01 m?
A)
31.5 ± 0.1 m3
B)
31.5 ± 0.2 m3
C)
31.5 ± 0.3 m3
D)
31.5 ± 0.4 m3
E)
31.5 ± 0.5 m3
E
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If an object is located 20 m to the right of the origin at 1:00 PM, and later the object is located 30 m to the right of the origin at 2:00 PM, then the displacement from 1:00 PM to 2:00 PM is
A. 50 m to the right. B. 30 m to the right. C. 25 m to the right. D. 20 m to the right. E. 10 m to the right.
What current in a solenoid 15.0-cm long wound with 100 turns would produce a magnetic field equal to that of the Earth, 5.00 × 10?5 T?
What will be an ideal response?
Which of the following radiations has the greatest frequency?
a. Infrared b. Visible c. Ultraviolet d. X-rays
Blue stars are always more luminous than red stars
Indicate whether the statement is true or false