Question 1 (1 point)
Which of the following observations support Aristotle's geocentric model? Select all that apply.
A. The sun, moon, and stars appear to follow a circular path through the sky.
B. The sun and moon appear to be the same size and brightness as the stars.
C. The sun, moon, and stars seem to move at the same rate across the sky.
D. For people on Earth, the planet does not feel like it is moving.
E. Some planets appear to cross between the sun and Earth.
F. Some planets appear to pass behind and beyond the sun.
Answers: 3
Physics, 22.06.2019 00:10
A-of 75 cm by cm by 17.5 cm up. of is 2 kg a , in ,if it is in , kg/?
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 17:50
Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system
Answers: 2
Question 1 (1 point)
Which of the following observations support Aristotle's geocentric model? Sel...
Biology, 30.01.2020 11:54
Mathematics, 30.01.2020 11:54
Social Studies, 30.01.2020 11:54
English, 30.01.2020 11:54
Mathematics, 30.01.2020 11:54
Computers and Technology, 30.01.2020 11:54
Mathematics, 30.01.2020 11:54
Chemistry, 30.01.2020 11:54
Mathematics, 30.01.2020 11:54
Arts, 30.01.2020 11:54
Mathematics, 30.01.2020 11:54
Business, 30.01.2020 11:54
Biology, 30.01.2020 11:54