Apparent weightlessness can be experienced in freely falling elevator
Indicate whether the statement is true or false
TRUE
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According to Einstein's theory of relativity, the universe is made of
A) matter and anti-matter. B) radiation. C) energy. D) popcorn. E) matter.
The surface of Earth is an example of a free-float reference frame
Indicate whether the statement is true or false
Newton's Second Law in 1 Dimension: The figure shows an acceleration-versus-force graph for three objects pulled by wires. If the mass of object 2 is 36 kg, what are the masses of objects 1 and 3?
A. 12 kg and 90 kg B. 72 kg and 18 kg C. 90 kg and 12 kg D. 12 kg and 72 kg
A meniscus lens is made with the radius of curvature of the convex surface being 25.0 cm and the concave surface 45.0 cm. If the glass used has index of refraction 1.50, what is the focal length of this lens?
A) -32 cm B) 32 cm C) 113 cm D) 67.5 cm E) -113 cm