Answer: 1000 Hz · 0,5 m = 500 m/s
Explanation: speed = frequency · wavelength
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The answer is B. This form of magnesium chloride is not a liquid but a solid that is white and colorless.
Answer: Smaller than ; larger than
Explanation:
When the elevator is moving in the upward direction, then the force acting on it is negative in nature because of
N= mg +ma, (g is gravity and a is acceleration)
here ma is negative so the N= mg-ma
Hence, it feels smaller than its original weight.
When the elevator is moving downward , then the force acting will be positive in nature
N= mg+ma,
here ma will be positive so it feels larger the original weight of passenger.
Answer:
The child represented by a star on the outside path.
Explanation:
