Physics, 22.12.2020 08:10 ayoismeisalex
A 2kg mass is initially at rest on a frictionless surface. A 45N force acts at an angle of 300
to the horizontal for a
distance of 3.5 meters.
a. Find the work done by the force
b. Find the speed of the mass at the end of the 3.5 meters
Answers: 1
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If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction
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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
A 2kg mass is initially at rest on a frictionless surface. A 45N force acts at an angle of 300
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