A compressed gas with a total mass of is stored in a spherical container having a radius of 0.521 m. What is the density of the compressed gas?
A) 181 kg/m3
B) 110 kg/m3
C) 134 kg/m3
D) 161 kg/m3
A
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A difference between the special and general theories of relativity is that
A. special relativity is valid only in stationary reference frames. B. special relativity deals with accelerated systems. C. general relativity deals with accelerated systems. D. general relativity only deals with swiftly moving objects.
The average orbital velocity in the Solar System is about _____
A) 10 km/s B) 20 km/s C) 30 km/s D) 40km/s
Which of the following is NOT true of work?
(A) It is the scalar product of force and displacement. (B) It is measured in joules. (C) It has the same units as energy. (D) It is a vector which is always in the same direction as the displacement. (E) It takes energy to perform work
A bird, accelerating from rest at a constant rate, experiences a displacement of 37 m in 11 s. What is the average velocity?
a. 1.7 m/s c. 3.4 m/s b. 2.5 m/s d. zero