When looking at an object through a magnifier, the focused image you see is

A. Upright and real
B. Inverted and real
C. Upright and virtual
D. Inverted and virtual


Ans: C. Upright and virtual

Physics & Space Science

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Charge: A piece of plastic has a net charge of +2.00 ?C. How many more protons than electrons does this piece of plastic have? (e = 1.60 × 10-19 C)

A. 1.25 × 1013  B. 1.25 × 1019  C. 2.50 × 1013  D. 2.50 × 1019  E. 3.01 × 1023 

Physics & Space Science

A star that is 70 percent the mass of our Sun would have a habitable zone that:

A. includes Jupiter and its moons B. includes Venus but not the Earth C. includes both Jupiter and Saturn and their moons D. includes Mars but not the Earth E. includes both Mars and the Earth

Physics & Space Science

A string is wound tightly around a fixed pulley whose radius is 5.0 cm. As the string is pulled, the pulley rotates without slipping. What is the angular speed of the pulley when the string has a linear speed of 5.0 m/s?

A) 100 rad/s B) 50 rad/s C) 25 rad/s D) 20 rad/s E) 10 rad/s

Physics & Space Science

According to Galileo, which of these is a "natural" or "unforced" form of motion?

A) A stone falling straight downward. B) A book coming to rest as it slides along the floor. C) Both a stone falling straight downward and a sliding book coming to rest are natural motions. D) Neither a stone falling straight downward nor a sliding book coming to rest are natural motions.

Physics & Space Science