Physics, 17.07.2019 16:30 madelynlittle5399
Alight platform is suspended from the ceiling by a spring. a student with a mass of 90 kg climbs onto the platform. when it stops bouncing and reaches its new equilibrium position (x=0), the student notices that the spring has stretched 0.82 m. the student's friend pulls the platform down 0.32 m further and then releases it at t=0. what is the amplitude of the motion of the student on the platform?
Answers: 1
Physics, 21.06.2019 19:30
To travel at constant speed, a car engine provides 24kw of useful power. the driving force on the car is 600n. at what speed does it travel?
Answers: 3
Physics, 21.06.2019 22:30
Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.
Answers: 3
Physics, 22.06.2019 03:50
The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle ΞΈ=0β with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle ΞΈ=30β with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle ΞΈ=45β with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle ΞΈ=60β with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle ΞΈ=90β with the plane of polarization?
Answers: 1
Alight platform is suspended from the ceiling by a spring. a student with a mass of 90 kg climbs ont...
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