An object is placed 25 cm in front of a lens of focal length 20 cm. 60 cm past the first lens is a second lens of focal length 25 cm. What is the resulting magnification of the object in this setup?
A.
B.
C.
D.
E.
Answer: A
Physics & Space Science
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An object has kinetic energy when it is __________
Fill in the blank(s) with correct word
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The physical disintegration or fracturing of rock is called ______________
Fill in the blank(s) with correct word
Physics & Space Science
0.500 moles of an ideal gas has a volume of 0.0100 
and a temperature of 300 K. What is the pressure of the sample of gas?
A. 125 kPa B. 143 kPa C. 157 kPa D. 198 kPa E. 217 kPa
Physics & Space Science
Regarding the Earth and a cloud layer 800 m above the Earth as the "plates" of a capacitor, calculate the capacitance if the cloud layer has an area of 1.0 km2 . If an electric field of 2.0 × 10^6 N/C makes the air break down and conduct electricity (lightning), what is the maximum charge the cloud can hold?
Physics & Space Science