The radius of a sphere is 2.00 m. The surface area of the sphere is
A. 36.7 m2.
B. 50.3 m2.
C. 72.5 m2.
D. 75.0 m2.
E. 75.3 m2
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The last page of a book is numbered 814 and the book is 3.00 cm thick. What is the average thickness of each page?
A. 2.54 * 10-3 cm
B. 2.54 * 10-3 cm
C. 7.37 * 10-3 cm
D. 3.92 * 10-3 cm
A graph of x vs. t is linear, and intercepts the vertical axis at -15m and the horizontal axis at 5s. What is the value of x corresponding to t=3s? ()
A. 6m
B. 26m
C. -26m
D. -9m
E. -6m
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.
A displacement vector D is given as 40.0 m long at an angle of 60.0 degrees NORTH of EAST. The Dx component and the Dy component of the vector are()
A. Dx = +34.6 m, Dy = +20.0 m.
B. Dx = +20.0 m, Dy = -34.6 m.
C. Dx = +20.0 m, Dy = +34.6 m.
Dx = -34.6 m, Dy = +20.0 m.
E. Dx = +34.6 m, Dy = -20.0 m.