<span>B) Nuclear reactions can release much more energy than chemical reactions</span>
Answer:
The origin of the leap year are based on the calendar of julian related with gregorian calendar, which are basically introduced by the Julius caesar in the 45 BC. So, the leap year is the year which contain one additional day in very fourth year.
It is necessary because in the even number of the days the earth does not revolving around sun. So, the situation of severe accident can arise if the days of earth's rotation is in a whole number for earth rotates around sun.
Answer:
amount of work done = -1.77 J
Explanation:
given data
mass = 0.25 kg
speed = 5 m/s
height = 2m
to find out
amount of work done by the water on the ball bearing
solution
we get here potential energy when ball fall
potential energy = mgh
potential energy = 0.25 × 9.8 × 2
potential energy = 4.9 J
and that lose potential energy gain by kinetic energy that is express as
kinetic energy = 0.5 × m × v²
kinetic energy = 0.5 × 0.25 × 5²
kinetic energy = 3.13 J
so we get now work done that is
work done = kinetic energy - potential energy
work done = 3.13 J - 4.9 J
amount of work done = -1.77 J
Answer:
false im just trying to get it if you'd like to give it to me
Answer:
See the answers below.
Explanation:
To solve this problem we must use the following equation of kinematics.
![y=y_{o}+v_{o}*t+\frac{1}{2}*g*t^{2} \\](https://tex.z-dn.net/?f=y%3Dy_%7Bo%7D%2Bv_%7Bo%7D%2At%2B%5Cfrac%7B1%7D%7B2%7D%2Ag%2At%5E%7B2%7D%20%20%5C%5C)
where:
y - yo = Fall distance [m]
Vo = initial velocity = 0 (dropped)
t = time = 6.5 [s]
g = gravity acceleration = 9.8 [m/s²]
Now replacing:
![y-y_{o}=0 +\frac{1}{2} *9.8*6.5^{2}\\y-y_{o}=207 [m]](https://tex.z-dn.net/?f=y-y_%7Bo%7D%3D0%20%2B%5Cfrac%7B1%7D%7B2%7D%20%2A9.8%2A6.5%5E%7B2%7D%5C%5Cy-y_%7Bo%7D%3D207%20%5Bm%5D)
The question is related to the distance between the points where the ball was dropped and the ground.
The variables used are gravitational acceleration, time, fall distance, initial velocity.