Physics, 02.03.2021 14:00 deonnaturner68p7hz7y
2 An estate agent is measuring the size of a large room in an
office block using an ultrasonic
measuring device. She places the transmitter against one wall
and sends a pulse. The pulse takes
0.1 seconds to reach the far wall and return.
a) How long is the room? (Speed of sound in air = 330 m/s)
Answers: 1
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Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?
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50 g of ice at 0°c is dropped in a beaker containing 100 g of water at 0°c. what will be the contents of the beaker after 5 hours? assume that the room temperature is 0°c.
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2 An estate agent is measuring the size of a large room in an
office block using an ultrasonic
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