Answer:
F = 53153.36[N]
Explanation:
In order to solve this problem, we must first use the principle of conservation of energy which is transformed from potential energy to kinetic, in this way we can determine the velocity at which the person enters the water.
where:
m = mass = 100 [kg]
g = gravity acceleration = 9.81 [m/s²]
h = elevation = 9 [m]
v = velocity [m/s]
Now replacing we can determinate the velocity.
![v^{2}=2*g*h\\v=\sqrt{2*g*h}\\v=\sqrt{2*9.81*9}\\v = 13.28[m/s]](https://tex.z-dn.net/?f=v%5E%7B2%7D%3D2%2Ag%2Ah%5C%5Cv%3D%5Csqrt%7B2%2Ag%2Ah%7D%5C%5Cv%3D%5Csqrt%7B2%2A9.81%2A9%7D%5C%5Cv%20%3D%2013.28%5Bm%2Fs%5D)
Then we can calculate the momentum which can be calculated as the product of force by time, this momentum is also equal to the product of mass by velocity.
Now replacing:
F = impact force [N]
t = time = 0.025 [s]
m = 100 [kg]
v = velocity = 13.28 [m/s]
![F*0.025=100*13.28\\F=53153.36[N]](https://tex.z-dn.net/?f=F%2A0.025%3D100%2A13.28%5C%5CF%3D53153.36%5BN%5D)
The answer is 0m because at point 8s the displacement is at zero m for example at 3s the displacement is at 8m
Very efficient because it uses less then half to do the action then the vacuum actually stores.
The answer is 27.03 I just multiplied the two numbers
Answer:
In this scenario adding the dielectric material in between the plates will have no effect on the capacitance of the plates since the voltage remains unchanged
Explanation:
Normally Introducing a dielectric into a capacitor decreases the electric field, which decreases the voltage, which increases the capacitance.
A capacitor with a dielectric stores the same charge as one without a dielectric, but at a lower voltage.
Voltage and capacitance are inversely proportional when charge is constant.
Now in this case the voltage remains the same hence the charges remain the same also because voltage is inversely proportional to capacitance
