Physics, 18.10.2019 17:10 kellersweeney
Aroller coaster has a "hump" and a "loop" for riders to enjoy (see picture). the top of the hump has a radius of curvature of 12 m and the loop has a radius of curvature of 15 m. (a) when going over the hump, the coaster is traveling with a speed of 9.0 m/s. a 100-kg rider is traveling on the coaster. what is the normal force of the rider’s seat on the rider when he is at the peak of the hump? compare this with the normal force he would experience when the coaster is at rest. (b) what is the minimum speed the coaster must have at the top of the loop in order for the rider to remain in contact with his seat? is this speed dependent on the mass of the rider?
Answers: 2
Physics, 21.06.2019 23:30
Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)
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Physics, 22.06.2019 17:40
Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.
Answers: 1
Physics, 22.06.2019 19:50
An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 26 mm and 103 mm. the electric potential of the inner conductor with respect to the outer conductor is - 700 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to
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Physics, 22.06.2019 21:00
The amount of work done is determined by 2 factors. describe an example of work (using the scientific definition) list the 2 factors that determine the amount of work done.
Answers: 2
Aroller coaster has a "hump" and a "loop" for riders to enjoy (see picture). the top of the hump has...
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