Answer:
Part a: 0.90 J
Part b: 4.5 J
Explanation:
Part a:
The particle of charge q=+8.2 μC will move from x=70cm to x=100cm:
dU=-dK
=(k*q*Q/r_f)-(k*q*Q/r_i)
= -(K_f-K_i)
= (9*10^9)*(8.2*10^-6)*(31*10^-6)/(1)-(9*10^9)*(7.5*10^-6)*(20*10^-6)
= -(K_f-0)
K_f= 0.90 J
Part b: The particle of charge q=+8.2 μC will move from x=70cm to x=20cm:
dU=-dK
=(k*q*Q/r_f)-(k*q*Q/r_i)
= -(K_f-K_i)
= (9*10^9)*(8.2*10^-6)*(-31*10^-6)/(0.2)-(9*10^9)*(7.5*10^-6)*(20*10^-6)
= -(K_f-0)
K_f= 4.5 J
Answer:
a) P =392.4[Pa]; b) F = 706.32[N]
Explanation:
With the input data of the problem we can calculate the area of the tank base
L = length = 10[m]
W = width = 18[cm] = 0.18[m]
A = W * L = 0.18*10
A = 1.8[m^2]
a)
Pressure can be calculated by knowing the density of the water and the height of the water column within the tank which is equal to h:
P = density * g *h
where:
density = 1000[kg/m^3]
g = gravity = 9.81[m/s^2]
h = heigth = 4[cm] = 0.04[m]
P = 1000*9.81*0.04
P = 392.4[Pa]
The force can be easily calculated knowing the relationship between pressure and force:
P = F/A
F = P*A
F = 392.4*1.8
F = 706.32[N]
Answer: I believe farther. Correct me if I am wrong
Explanation:
Answer: 1: kinetic energy and velocity are at zero when the magnets are held apart, and both increases rapidly when they are released and move together. Energy stored in the magnetic field decreases.
2: The energy stored in the system is converted to kinetic, thermal, and sound energy.
3: The energy stored in the magnetic field does not change.
4: Some of the energy stored is converted into kinetic and thermal energy.
5: Two small repelling magnets hold each other in place.
Just took the quiz all are correct! I hope this helps you! :)
In a distance vs time graph what does the slope represents the Velocity
