Answer:
Vf = 62.61 m/s
Explanation:
Since, the truck completely stops t highest point. Therefore, from conservation of energy principle:
Kinetic Energy Lost by Truck = Potential Energy Gained by Truck
(0.5)(m)(Vf² - Vi²) = mgh
(0.5)(Vf² - Vi²) = gh
where,
Vf = final velocity = 0 m/s (since, truck finally stops)
Vi = initial velocity = ?
g = acceleration due to gravity = - 9.8 m/s² (negative sign due to upward motion)
h = Height of Ramp = (Length)(Sin θ) = (400 m)(Sin 30°) = 200 m
Therefore,
(0.5)(0² m/s - Vf²) = (-9.8 m/s²)(200 m)
Vf² = (1960 m²/s²)/(0.5)
Vf = √(3920 m²/s²)
<u>Vf = 62.61 m/s</u>
The magnitude of the magnetic moment due to the electron's motion is .
<h3>
What is magnetic moment?</h3>
The magnetic pull and direction of a magnet or other object that produces a magnetic field are referred to as the magnetic moment in electromagnetism. Things that have magnetic moments include electromagnets, permanent magnets, various compounds, elementary particles like electrons, and a number of celestial objects (such as many planets, some moons, stars, etc).
The term "magnetic moment" really refers to the magnetic dipole moment of a system, which is the portion of the magnetic moment that can be represented by an equivalent magnetic dipole or a pair of magnetic north and south poles that are only very slightly apart. The magnetic dipole component is adequate for sufficiently small magnets or over sufficiently large distances.
Calculations:
radius=
velocity=
Working formula, M=N/A
=
=
M=
=
To learn more about magnetic moment ,visit:
brainly.com/question/14298729
#SPJ4
<h3><u>Answer;</u></h3>
<em>too small to be seen with an optical microscope </em>
<h3><u>Explanation;</u></h3>
- <em><u>An electron microscope is a type of microscope that is used to observe very tiny specimens whose features can not be observed by other types of microscopes.</u></em> It uses a beam of electrons to generate an image of a given specimen whose features can be clearly observed and studied.
- <em><u>Electron microscope has very high resolution and magnification as compared to other optical microscope </u></em>hence can be observed in the study of micro-organisms such as viruses which would be difficult to study their features using optical microscopes.
The critical mass of a fissionable material depends upon its nuclear properties (specifically, the nuclear fission cross-section), its density, its shape, its enrichment, its purity, its temperature and its surroundings.
i hope this helps. if it does please mark brainliest.