Physics, 14.03.2020 06:06, iisofieii1978
Merry-go-rounds are a common ride in park playgrounds. The ride is a horizontal disk that rotates about a vertical axis at their center. A typical size is a diameter of 12 ft. A rider sits at the outer edge of the disk and holds onto a metal bar while someone pushes on the ride to make it rotate. Estimate a typical time for one rotation. (a) For your estimated time, what is the speed of the rider, in m/s? (b) What is the rider's radial acceleration, in m/s2? (c) What is the rider's radial acceleration if the time for one rotation is halved?
Answers: 3
Physics, 22.06.2019 05:00, mariamalakozay603
Aperson standing in a canoe exerts a force of 700 n to throw an anchor over the side. find the acceleration of the canoe if the total mass of the canoe and the person is 100 kg?
Answers: 1
Physics, 22.06.2019 14:30, samone26
Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates
Answers: 3
Physics, 22.06.2019 17:40, yoongnzl
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, 23.06.2019 02:30, rhaquan66766
If frequency goes up, what happens to wavelength? does it get shorter or longer?
Answers: 2
Merry-go-rounds are a common ride in park playgrounds. The ride is a horizontal disk that rotates ab...
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