A 50-kg satellite circles planet Cruton every 5.6 h in an orbit with a radius of 12 × 106 m. What is the magnitude of the gravitational force on the satellite by planet Cruton?
A. 63 N
B. 58 N
C. 68 N
D. 73 N
E. 50 N
Answer: B
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If a precipitation hardened alloy that is aged to peak strength is heated during processing to produce the part, the strength may be _________.
Fill in the blank(s) with the appropriate word(s).
The wavelength of the light from a certain laser is where What is this wavelength in nanometers? (1 nm = 10-9m)
A) 6.6 × 102 nm B) 6.6 × 103 nm C) 6.6 × 101 nm D) 6.6 × 104 nm
Suppose two equipotential surfaces are the planes x = 3 m and x = 5 m. If the potential at the x = 3 m surface is 10 V and the potential at the x = 5 m surface is 50 V, what is the magnitude of the electric field between the two surfaces?
a. 40 N/C b. 20 N/C c. 15 N/C d. 10 N/C
A person having a near point of 25 cm uses a magnifying glass with a focal length of 10 cm. What is the angular magnification of the glass for that person when her eyes are focused at infinity?
A) 1.5 B) 2.5 C) 3.5 D) 4.5