Answer:
To have the same kinetic energy the speed of the marble must be 9 times the speed of rock.
Explanation:
The general formula of kinetic energy is given as follows:
where,
K.E = Kinetic Energy
m = mass of the object
v = speed of the object
So, for the marble and rock to have same kinetic energy, we can write:
<u>Hence, to have the same kinetic energy the speed of the marble must be 9 times the speed of rock.</u>
Answer:
Given that
m = 5.3 kg
Fx = 2x + 4
We know that work done by force F given as
w= ∫ F. dx
a)
Given that x=1.08 m to x=6.5 m
Fx = 2x + 4
w= ∫ F. dx
![w=\left [x^2+4x \right ]_{1.08}^{6.5}](https://tex.z-dn.net/?f=w%3D%5Cleft%20%5Bx%5E2%2B4x%20%5Cright%20%5D_%7B1.08%7D%5E%7B6.5%7D)
w=62.7 J
b)
We know that potential energy given as
∫ dU = -∫F.dx ( w= ∫ F. dx)
ΔU= -62.7 J
c)
We know that form work power energy theorem
Net work = Change in kinetic energy
W= KE₂ - KE₁
62.7 =KE₂ - (1/2)x 5.3 x 3²
KE₂ = 86.55 J
This is the kinetic energy at 6.5m
Water that is "hard" <span>contains a certain amount of dissolved minerals (like calcium and magnesium).
</span>Water that is "soft" <span>is a certain type of treated </span>water. It contains <span>only one type of ion, which is sodium. An example of this is rainwater because it is naturally </span>soft water.
Answer:
Set small goals for yourself
Explanation:
the goals you start with do not need to be huge, break down the goal Into smaller tasks. this is a system called metronome growth system.
