Physics, 19.02.2021 22:30 keshan3000
2. You are designing a roller coaster in which a car will be pulled to the top
of a hill of heighth and then, starting from a momentary rest, will be
released to roll freely down the hill and toward the peak of the next hill,
which is 1.1 times as high. Will your design be successful? Explain your
answer
Answers: 2
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An automobile of mass 2000 kg moving at 30 m/s is braked suddenly with a constant braking force of 10000 n. how far does the car travel before stopping?
Answers: 2
Physics, 22.06.2019 04:30
Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j
Answers: 1
Physics, 22.06.2019 05:40
An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2
Answers: 1
2. You are designing a roller coaster in which a car will be pulled to the top
of a hill of heighth...
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