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Raven Weber
Physics
A duck floating on a lake oscillates up and down5.0 times during a 10.-second interval as aperiodic wave passes by. what is the frequencyof the duck's oscillations? (1) 0.10 hz (3) 2.0 hz (2) 0.50 hz (4) 50. hz
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Deegan Conner
Physics
A 2 feet piece of wire is cut into two pieces and once a piece is bent into a square and the other is bent into an equilateral triangle. Where should the wire cut so that the total enclosed area by both shapes is at the maximum?
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Birdy
Physics
Drag race tires in contact with an asphalt surface probably have one of the highest coefficients of static friction in the everyday world. Given a car with a mass of 3000kg:
Assuming a constant acceleration and no slipping of tires, what acceleration does the car experience if it covers a quarter mile in 6.0 s? (1 mi = 1609 m)
What is the coefficient of static friction? (Assume the magnitude of the force that accelerates the car is approximately equal to the magnitude of the frictional force between the tires and the road.)
Did you need the mass to calculate the coefficient of friction? Why or why not?
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Guest
Physics
What is true about the frequency and wavelength of this sound? A:The wavelength of the sound is 0.800 m. B: The wavelength of the sound is 2.72 m. C:The frequency of the sound is 125 Hz. D:The frequency of the sound is 425 Hz.
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Sergio Barron
Physics
What is caused by extra estrongen in women
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Guest
Physics
Which force is the more dominant one in the hydrogen atom, the gravitational or the electrical? by what factor?
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Babs
Physics
Name the elements from which nichrome can be made.
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Carlo
Physics
The power output of a typical large power plant is 1000 megawatts (MW). Express this result in W, kW, and GW
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Hadley Oneill
Physics
During an experiment, a toy car accelerates forward for a total time of 5s. Which procedures could a student use to determine the average net force exerted on the car during the 5s that the car accelerates?
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Porter Hunter
Physics
What is the law of conversation of energy?
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Hugh Lucero
Physics
When a surface vibrates, air is forced to move, creating a sound wave. What kind of force is exerted by the moving surface on the air?
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Kailyn Vaughan
Physics
An 800-N billboard worker stands on a 4.0-m scaffold supported by vertical ropes at each end. If the scaffold weighs 500 N and the worker stands 1.0 m from one end, what is the tension in the rope nearest the worker?
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Nancy Combs
Physics
When would you use a compound microscope?
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Athena Hill
Physics
What does a Battery and a human have in common?
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Mohammed Mayer
Physics
Why is it better to search new a cliff for a fossil then near a volcano?
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