Answer:
Power is associated by many people with electricity. Knowing that power is the rate of energy use or energy conversion, what is the expression for electric power? Power transmission lines might come to mind.
Answer:
B1 = μ_o•I1/2πr
Explanation:
According to the right hand rule, we can say that the magnetic field at the second wire due to the current being carried in first wire is given by;
B1 = μ_o•I1/2πr
Where;
r is distance that separates the two wires
μ_o is a constant known as permeability of free space
I1 is current in wire 1
Answer:
x = 7226.94 m
y = 1677.4 m
Explanation:
This is a classic problem of a parabolic move. Let's analyze the given data.
The speed is 300 m/s but it's fired at 55°, so the x and y component of the speed would be:
Vx = 300 cos55 = 172.07 m/s
Vy = 300 sin55 = 245.75 m/s
Now, to get the x and y components of the shell, we need to apply the following expressions:
X = Xo + Vx*t (1)
Y = Yo + Vy*t - 1/2 gt² (2)
Xo and Yo is 0, and we already have the speed in x and y, so the components are:
X = 0 + (172.07)(42)
<h2>
X = 7226.94 m</h2>
For the y component:
Y = 0 + (245.75)(42) - 1/2 (9.8)(42)²
Y = 10321.5 - 8643.6
<h2>
Y = 1677.4 m</h2><h2>
</h2>
Hope this helps
Answer:
burger and cheese with applesauce
Well, see, there you go ... using a word that means different things
to different people, and may even mean different things to the same
people at different times.
What does "nearly" mean ? ? And how do you measure how far
or near to a circle it is ? ?
Every closed gravitational orbit is an ellipse. An ellipse looks like a
circle that either has or hasn't been squashed. If it's perfectly round
and hasn't been squashed at all, then we call it a circle. If it's been
squashed at all, then we call it an ellipse.
To come up with a number that tells how squashed it is, we divide
(the distance from the center to one focus of the ellipse)
by
(the distance from the center to one vertex of the ellipse).
The eccentricity of a circle is zero. When you squeeze the circle,
the more you squash it, the higher the eccentricity gets, until ... if
you totally squash it down to a straight line ... the eccentricity is 1.
Perfect circle . . . . . . zero
Totally squashed . . . 1.00
Orbit Eccentricity Compared to Earth
Mercury 0.21 x 12.3
Venus 0.007 x 0.4
Earth 0.017 x 1.0
Moon 0.055 x 3.3
Mars 0.094 x 5.6
Pluto 0.244 x 14.6
Halley's Comet 0.97 x 57.1
Conclusions:
-- All of the planets (and their moons too) have nearly circular orbits.
-- While Pluto was considered a planet, it had the most eccentric orbit
of all. (That's one of the reasons it lost its standing as a planet. There
were other reasons.)
-- Now the planet with most eccentric orbit is Mercury. The orbits didn't
change. Pluto just got bumped from the list.
-- Most comets have very eccentric, far-from-circlular, elliptical orbits.
They go waaaay out, and come waaay in close to the Sun.
