Each edge of a cube has a length of 12.7 cm. What is the length of a diagonal of the cube going through the center of the cube?
a. 24.0 in.
b. 22.0 in.
c. 25.5 in.
d. 20.5 in.
e. 8.7 in.
e
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When you float in fresh water, the buoyant force that acts on you is equal to your weight. When you float higher in the denser water of the Dead Sea, the buoyant force that acts on you is
A) greater than your weight. B) less than your weight. C) equal to your weight.
At what speed is the relativistic momentum five times the value calculated classically?
A. 0.99 c B. 0.98 c C. 0.96 c D. 0.80 c E. 0.20 c
Four identical particles (mass of each = 0.40 kg) are placed at the vertices of a rectangle (2.0 m × 3.0 m) and held in those positions by four light rods which form the sides of the rectangle. What is the rotational inertia of this rigid body about an axis that passes through the mid-points of the longer sides and is parallel to the shorter sides?
a. 2.7 kg/m2 b. 3.6 kg/m2 c. 3.1 kg/m2 d. 4.1 kg/m2 e. 1.6 kg/m2
On September 22 or 23, the noonday Sun is overhead at what latitude?
a. 0° b. 23.5°N c. 23.5°S d. That of the Tropic of Cancer