Answer:
Explanation:
Let the highest and lowest score be a and b respectively .
a - b = 10
a = 10 + b
The numbers in descending order are a , 98 , 98 , b .
mean = 100 , so
4 x 100 = a + 98 + 98 + b = 10 + b + 98 + 98 + b = 206 + 2b
400 = 206 + 2b
2b = 194
b = 97
a = 107
So the scores were as follows
107 , 98 , 98 , 97
Answer:
the force exerted on the dipole = 0.11 N
Explanation:
Using F = (KQq/r^2) sin ∅
the distance of dipole to the line charge will be 30 cm, hence 1 st charge on the dipole -10 micro C is 29 cm and that to + 10 micro C is 31 cm (2 cm apart).
0.91 N with -ve charge and 0.80 to +ve charge. The difference is the force on the dipole i.e 0.11 N
Answer:
(c) no different than on a low-pressure day.
Explanation:
The force acting on the ship when it floats in water is the buoyant force. According to the Archimedes' principle: The magnitude of buoyant force acting on the body of the object is equal to the volume displaced by the object.
Thus, Buoyant forces are a volume phenomenon and is determined by the volume of the fluid displaced.
<u>Whether it is a high pressure day or a low pressure day, the level of the floating ship is unaffected because the increased or decreased pressure at the all the points of the water and the ship and there will be no change in the volume of the water displaced by the ship.</u>
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.