A bird, accelerating from rest at a constant rate, experiences a displacement of 25 m in 15 s. What is the final velocity after 15 s?
a. 2.5 m/s
b. 1.7 m/s
c. 3.3 m/s
d. 3.8 m/s
e. zero
c
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A vessel containing 5.0 kg of water at 10°C is put into a refrigerator. The 1/7 HP motor (1 HP = 746 W) runs for 5.0 minutes to cool the liquid to the refrigerator's low temperature, 0°C. What is the COP of the refrigerator?
A. 5.7 B. 4.6 C. 6.5 D. 7.2 E. 3.6
The image of a plant is 4.0 cm from a concave spherical mirror having a radius of curvature of 10 cm. Where is the plant relative to the mirror?
A) 4.4 cm in front of the mirror B) 9.0 cm in front of the mirror C) 1.0 cm in front of the mirror D) 2.2 cm in front of the mirror E) 20 cm in front of the mirror
The largest plutons are called ______________
a. dikes b. sills c. batholiths d. laccoliths
As the index of refraction gets larger:
a. light bends less for a given angle of incidence. b. the angle of incidence gets larger. c. light bends more for a given angle of incidence. d. the angle of incidence gets smaller. e. it has no effect on how the light bends.