Our text claims that a charged particle exerts a net attractive force on an electric dipole. The purpose of this exercise is to
investigate this phenomenon. Suppose a permanent dipole is situated at the origin of the r-z plane and consists of charges +???? and −???? separated by a fixed distance ????. The dipole is situated such that +???? lies at − ???? 2 on the r-axis and −???? lies at ???? 2 on the r-axis. A charge +???? is situated at distance r from the center of the dipole on the positive raxis. We’ll assume, as is usually the case for electric dipoles, that ???? ≪ ???? for this configuration. a. (1 point) Draw a pictorial representation of this physical situation and label any quantities of interest. b. (2 points) Write an expression for the net force exerted on the dipole by charge +????. c. (1 point) Is this force toward +???? or away from +????? Explain. d. (3 points) Use the binomial expansion as an approximation tool to understand the effect that ???? ≪ ???? has on the physical situation. The binomial approximation to first order is wr
1 answer:
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Here in this case since there is no torque about the hinge axis for the system of bullet and block then we can say that angular momentum of this system will remain conserved
here we will have
L = 0.250 m
v = 385 m/s
m = 1.90 gram
now moment of inertia of the plate will be
now from above equation
Answer:
Magnitude of impulse, |J| = 4 kg-m/s
Explanation:
It is given that,
Mass of cart 1,
Mass of cart 2,
Initial speed of cart 1,
Initial speed of cart 2, (stationary)
The carts stick together. It is the case of inelastic collision. Let V is the combined speed of both carts. The momentum remains conserved.
V = 1 m/s
The magnitude of the impulse exerted by one cart on the other is given by:
J = -4 kg-m/s
or
|J| = 4 kg-m/s
So, the magnitude of the impulse exerted by one cart on the other 4 kg-m/s. Hence, this is required solution.