An electric bell is placed inside a transparent glass jar. the bell can be turned on and off using a switch on the outside of the jar. a vacuum is created inside the jar by sucking out the air. then the bell is rung using the switch. what will we see and hear?
a) we’ll see the bell move, but we won’t hear it ring.
b) we won’t see the bell move, but we’ll hear it ring.
c) we’ll see the bell move and hear it ring.
d) we won’t see the bell move or hear it ring.
e) we’ll see the sound waves exit the vacuum pump.
Answers: 2
Physics, 21.06.2019 20:50, lokiliddel
An airplane flies eastward and always accelerates at a constant rate. at one position along its path it has a velocity of 34.3 m/s, it then flies a further distance of 40100 m and afterwards its velocity is 47.5 m/s. find the airplane\'s acceleration and calculate how much time elapses while the airplane covers those 40100 m.
Answers: 1
Physics, 22.06.2019 09:00, carterh166
Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than
Answers: 3
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