<u>Answer:</u>
After reaching crossing locomotive takes 17.6 seconds to reach velocity 32 m/s.
<u>Explanation:</u>
Acceleration of locomotive = 1.6 
Time at which it crosses crossing = 2.4 seconds.
We have equation of motion, v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration and t is the time taken.
When it reaches 32 m/s, v = 32 m/s, u = 0 m/s, a= 1.6 seconds.
32 = 0 + 1.6 * t
t = 20 seconds.
So locomotive's velocity is 32 m/s after 20 seconds and it reaches crossing at 2.4 seconds.
So after reaching crossing it takes 17.6 seconds to reach velocity 32 m/s.
Sn is Tin which has 50 atomic number
it means it has 50 electrons in its outer shells
+2 shows its valency
plus sign comes when electrons are removed from an atom
so here 2 electrons are removed from Sn atom
remaining electrons are 50-2
48 electrons
Answer:
4.00m
Explanation:
at that instant where it is dropped all the mechanical energy is gpe which is 71.9
and the formula for gpe = mass (1.80) * height * gravitational field strength (i'm using 10 m/s2)
height of football stadium
= 71.9/[(1.80)(10)]
= 71.9/18.0
= 3.99444..
= 4.00 (3 sf)
Answer:
20N
Explanation:
Given parameters:
Work done = 200J
Distance moved = 10m
Unknown:
Amount of force applied =?
Solution:
Work done is the force applied on a body to move it in the direction of the force.
Work done = force x distance
The unit of work done is in joules
Since the unknown is force, we make it the subject of the expression;
Force = 
Force = 
= 20N
Answer: summer and greater than 66°N
Explanation:
Summer is the most appropriate season in which the sun does not set. It is a typical situation for the Arctic Circle. It is the latitude in which the sun does not set in the day and typically during the month of July. The north of this circle is a period of sunshine which last for a period of about six months in the North Pole. Summer never rises in the winter solstice (December).
