Physics, 25.09.2019 19:30 janeriaw188
In a concrete mixer, cement, gravel, and water are mixed by tumbling action in a slowly rotating drum. if the drum spins too fast the ingredients stick to the drum wall instead of mixing. assume that the drum of a mixer has radius r = 0.5 m r=0.5m and that it is mounted with its axle horizontal. what is the fastest the drum can rotate without the ingredients sticking to the wall all the time? assume g = 9.8 m / s 2 g=9.8m/s2.
Answers: 1
Physics, 21.06.2019 22:40
Explain vector addition, triangle method and parallelogram method
Answers: 1
Physics, 22.06.2019 00:00
True or false: the revolution of the earth creates day and night as it rotates around the sun
Answers: 2
Physics, 22.06.2019 05:00
Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above
Answers: 1
Physics, 22.06.2019 11:20
The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)
Answers: 3
In a concrete mixer, cement, gravel, and water are mixed by tumbling action in a slowly rotating dru...
Mathematics, 20.05.2020 17:57
Mathematics, 20.05.2020 17:57
Chemistry, 20.05.2020 17:57
Biology, 20.05.2020 17:57
Mathematics, 20.05.2020 17:57
Mathematics, 20.05.2020 17:57
Mathematics, 20.05.2020 17:57
Mathematics, 20.05.2020 17:57
Mathematics, 20.05.2020 17:57
Geography, 20.05.2020 17:57
Mathematics, 20.05.2020 17:57
Geography, 20.05.2020 17:57
Mathematics, 20.05.2020 17:57
History, 20.05.2020 17:57