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Physics, 21.06.2019 18:00
Assuming weightless pulleys and 100% efficiency, what is the minimum input force required to lift a 120 n weight using a single fixed pulley?
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Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.
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Physics, 22.06.2019 11:00
Which sound characteristic is not affected by the relative motion of an object
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Physics, 22.06.2019 12:00
If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?
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A car is traveling at a speed of 20m/s and has a mass of 1200kg how much kinetic energy does it have...
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