Which of the following can be described as the totality of all space, time, matter, and energy?
A) The universe
B) Astronomy
C) The Milky Way
D) The Earth
E) The solar system
A
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The upward force exerted by a fluid on an object immersed in it is called
a. gravitational force b. atmospheric force c. buoyant force d. weight e. none of the above
When water vapor condenses to liquid water, is thermal energy absorbed or released?
What will be an ideal response?
A meter stick balances at the 50.0-cm mark. If a 50.0-g object is placed at the 90.0-cm mark, the stick balances at the 61.3-cm mark. What is the mass of the meter stick?
A) 127 g B) 178 g C) 89.7 g D) 32.6 g E) 73.4 g
The precision and number of significant figures in 1.003 km is
A. precision = .0001 km, significant figure = 4. B. precision = .001 km, significant figure = 4. C. precision = .0001 km, significant figure = 3. D. precision = .001 km, significant figure = 3. E. precision = .0001 km, significant figure = 2.