Which of the following metals is most reactive?
A. aluminum
B. sodium
C. co...
Physics, 05.02.2021 22:10 akheel4818
Which of the following metals is most reactive?
A. aluminum
B. sodium
C. copper
D. calcium
Answers: 3
Physics, 22.06.2019 04:30
Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?
Answers: 3
Physics, 22.06.2019 08:30
An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?
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 11:50
The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?
Answers: 3
History, 30.01.2020 13:04
Biology, 30.01.2020 13:04
English, 30.01.2020 13:04
Mathematics, 30.01.2020 13:04
Mathematics, 30.01.2020 13:04
Chemistry, 30.01.2020 13:04
English, 30.01.2020 13:04
History, 30.01.2020 13:04
Geography, 30.01.2020 13:04