Physics, 16.01.2021 01:40 sweetbri7p5v6tn
A sound wave travels across a 2,100-meter wide valley in 7.0 seconds. The speed of the wave is .
300 m/s
147 m/s
1.47 m/s
impossible to determine without knowing the air temperature
Answers: 1
Physics, 21.06.2019 16:00
Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?
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Physics, 22.06.2019 16:40
Acapacitor is storing energy of 3 joules with a voltage of 50 volts across its terminals. a second identical capacitor of the same value is storing energy of 1 joule. what is the voltage across the terminals of the second capacitor?
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Physics, 22.06.2019 17:30
Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.
Answers: 1
A sound wave travels across a 2,100-meter wide valley in 7.0 seconds. The speed of the wave is .
30...
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