Physics, 30.05.2020 14:57 yessijessiHaley
Study this image of a geologic time scale.
How long ago did invertebrates become common on Earth?
1.6 million years ago
132 million years ago
410 million years ago
520 million years ago
Answers: 2
Physics, 22.06.2019 09:30
1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.
Answers: 1
Physics, 22.06.2019 10:30
Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.
Answers: 1
Physics, 22.06.2019 18:30
Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.
Answers: 1
Physics, 22.06.2019 19:40
Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.
Answers: 3
Study this image of a geologic time scale.
How long ago did invertebrates become common o...
How long ago did invertebrates become common o...
Mathematics, 15.11.2020 21:50
History, 15.11.2020 21:50
English, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50