High clouds have the prefix
A) Nimbo-.
B) Alto-.
C) Strato-.
D) Cirro-.
Answer: D
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Answer the following statement(s) true (T) or false (F)
1. A car moves backward 10 m in 2 s at a steady rate. The car’s speed is therefore –5 m/s. 2. An object is moving at a constant velocity. This means that an interaction must be delivering momentum to the object at a constant nonzero rate. 3.A bicyclist rounding a curve at a constant speed is receiving a nonzero net flow of momentum. 4. A human being’s weight could be 150 kg. 5. Suppose a moving cart (cart A) hits an identical cart (cart B) at rest. Cart B remains at rest after the collision, and cart A rebounds with a speed equal to its original speed. Cart B must have participated in some other interaction during the collision process,
A ball is thrown upward at a velocity of 19.6 m/s. What is its velocity after 3.0 s, assuming no air?
A) 9.8 m/s upward B) 9.8 m/s downward C) 0 m/s D) 19.6 m/s downward
Triesters of long-chain acids with glycerol are called
a. condensation polymers. b. fats. c. soaps. d. synthetic detergents.
A rifle is aimed horizontally at the center of a large target 60 m away. The initial speed of the bullet is 240 m/s. What is the distance from the center of the target to the point where the bullet strikes the target?
a. 48 cm b. 17 cm c. 31 cm d. 69 cm e. 52 cm