Repeatedly dipping your fingers into water produces waves. Increasing the frequency of dipping produces waves that are
A) shorter.
B) longer.
C) the same.
Answer: A
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The Moon contains small amounts of frozen water that is mixed in with its rocks.
Answer the following statement true (T) or false (F)
Acceleration: Suppose that a car traveling to the west begins to slow down as it approaches a traffic light. Which of the following statements about its acceleration is correct?
A. The acceleration is toward the east. B. Since the car is slowing down, its acceleration must be negative. C. The acceleration is zero. D. The acceleration is toward the west.
An empty coal-car (mass 20,000.kg) of a train coasts along at 10.m/s. An unfortunate 3000. kg elephant falls from a bridge and drops vertically into the car. Determine the speed of the car immediately after the elephant is added to its contents
What will be an ideal response?
What is your latitude if the north celestial pole appears on your horizon?
A) 90° N B) 90° S C) 0° D) 45° N