Physics, 23.08.2019 14:30 school7067
Which of the following is a supersonic speed? mach 0.005 mach 0.05 mach 0.5 mach 5
Answers: 1
Physics, 21.06.2019 18:00
Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past
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
Physics, 22.06.2019 11:30
In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque
Answers: 1
Physics, 22.06.2019 13:50
The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?
Answers: 2
Which of the following is a supersonic speed? mach 0.005 mach 0.05 mach 0.5 mach 5...
History, 08.07.2019 16:00
English, 08.07.2019 16:00
Biology, 08.07.2019 16:00
English, 08.07.2019 16:00
Mathematics, 08.07.2019 16:00
Mathematics, 08.07.2019 16:00
Chemistry, 08.07.2019 16:00
Chemistry, 08.07.2019 16:00
Mathematics, 08.07.2019 16:00
History, 08.07.2019 16:00