Your friend of mass 150kg can just barely float in fresh water .Calculate her approximate volume. Express your answer to two sig
1 answer:
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Answer:
The correct option is a , c
Explanation:
Generally the fringe spacing is mathematically defined as
Where y is the fringe spacing
m is the order of the fringe
is the wavelength
D is the distance between the slit and the screen
d is the distance between the slit
Now in order to increase the fringe spacing can do the following
- Increase the wavelength
- increase the distance from the slit to the screen
- Decrease the distance between the slit
The following action would increase the fringe spacing because the from the question these parameters are directly proportional to the fringe spacing
Answer:
a)
b)
c) The estimate is low.
Explanation:
a) Using the energy conservation we have:
we have kinetic energy intially and gravitational potential energy at the maximum height.
b) We can use the equation of the gravitational force
(1)
We have that:
(2)
at the surface G will be:
Now the equation of an object at a distance x from the surface.
is:
Using that dv/dt is vdx/dt and integrating in both sides we have:
c) The difference is:
So the percent difference will be:
The estimate is low.
I hope it helps you!