Answer:
Explanation:
As the path is straight, so the speed is equivalent to velocity. Now. assuming that the acceleration and deceleration of the train are constant. So, change of velocity with respect to time for acceleration as well as deceleration is constant. Hence, the slope of the speed-time graph is constant for the time of acceleration as well as deceleration. The speed for the time from 
to 
is constant, so slope for this interval of time is zero. The speed-time graph is shown in the figure.
The total distance covered by the train during the entire journey is the area of the speed-time graph.
Area
As velocity is in 
and time is in 
so the unit of area is 
Hence, the total distance is 
.
Answer:
The normal force will be lower than the gravitational force acting on the car. Therefore the answer is N < mg, which is <em>option B</em>.
Explanation:
Over a round hill, the centripetal force acting toward the the radius of the hill supports the gravitational force (mg) of the car. This notion can be expressed mathematically as follows:
At the top of a round hill
At the foot of a round hill
I dont know like a commercial seller person
<span>The statement, The word atom
comes from a Greek word that means “able to duplicate”, is false. The greek
word for atom is atomos. The a- in atom means “not” and –tom means “cut”. So it
is not ot cut or it cannot be cut. It is common definition is indivisibility. This
definition is defined by the philosopher Democritus. He observed that as he cut
the sugar cube into smaller fraction, it reduces to nothing that cannot be seen
in the eye. And so he proposed that definition.</span>
Answer:
The two neighboring planets with the greatest distance between them is <em><u>Neptune and Uranus</u></em>. This happens when they are at the opposite sides of the Sun at approximately. They are 4500 million miles away from each other.
If by adjacent you mean next to each other, in terms of the order of planets in our Solar System, then the closest would be <u><em>Earth and Venus</em></u>; which are separated by about 38,000,000 kilometres when in opposition.
I am not sure about the general patterns..
<u><em>Venus has the longest day</em></u> of any planet in our solar system. It completes one rotation every 243 Earth days.
A year on <u><em>Neptune</em></u> is the longest of any planet, lasting the equivalent of 164.8 years (or 60,182 Earth days). It is obvious because it is also the farthest with the longest orbit.
Outer planets are less dense than the inner planets because they posses a big volume but contains not much mass. Try to imagine 2 rocks, one is big, but is hollow or have a lot of holes; and the other is small, but solid with no holes.
Happy learning!!
