(i) Clouds appear white.
(ii) Sky appears blue.
(i) Name the system which enables us to locate...
Physics, 05.02.2021 19:40 cxttiemsp021
(i) Clouds appear white.
(ii) Sky appears blue.
(i) Name the system which enables us to locate
underwater objects by transmitting ultrasonic
waves and detecting the reflecting impulse. [3]
(ii) What are acoustically measurable quantities
related to pitch and loudness ?
(i) When a tuning fork [vibrating] is held close
to ear, one hears a faint hum. The same (vibrating
tuning fork] is held such that its stem is in contact
zuith the table surface then one hears a loud sound
Answers: 1
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Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?
Answers: 1
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During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.
Answers: 2
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How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters
Answers: 2
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