Physics, 04.12.2019 01:31 pinapunapula
In an old-fashioned amusement park ride, passengers stand inside a 4.9-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will "stick" to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.63 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. a sign next to the entrance says "no children under 30 kg allowed." what is the minimum angular speed, in rpm, for which the ride is safe?
Answers: 3
Physics, 22.06.2019 14:00
Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
Answers: 1
Physics, 23.06.2019 15:00
Isaac walks 4 blocks north. then he turns he turns around and walks 1 block south. which of the following correctly describes isaac's motion
Answers: 2
Physics, 23.06.2019 18:00
What force is responsible for making fusion possible in the sun? a- gravitational force b- electromagnetic force c- weak nuclear force d- strong nuclear force
Answers: 2
In an old-fashioned amusement park ride, passengers stand inside a 4.9-m-diameter hollow steel cylin...
Chemistry, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
English, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
History, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
Computers and Technology, 15.09.2020 20:01
History, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
Mathematics, 15.09.2020 20:01
English, 15.09.2020 20:01
Spanish, 15.09.2020 20:01