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Two-point charges are attracted from each other with a force of 6kN. If the distance between them is reduced to one fourth of its original value, determine the new force of attraction between them.
You apply a 71 newton force to a 50 kg box, but it does not move. What is the force of friction acting against your push?
Particles each with mass m and charge q accelerate through a potential difference of V = 100 volts and enter a region of uniform magnetic field B, where their paths are circular with radius R = 0.05 m as shown in Fig. 9.12. The magnitude of the field is B = 6.75 x 10−4 T. a. Indicate the direction of B on a drawing. b. Derive the following relationship between the radius R and q, m, V, and B: 𝑅 2 = 𝑚 𝑞 2𝑉 𝐵2 c. Find the value of the charge-to-mass ratio (q/m) of these particles and identify them. Justify your answer! F
iron has a BCC crystal structure, and that that the edge length of the cubic unit cell is 0.287 nm.
A) 3.60
B) 2.16
C) 3.48
D) 2.84
A) 5.82Ã 10Ã ¢ 4H/m
B) 7.54Ã 10Ã ¢ 3H/m
C) 6.72Ã 10Ã ¢ 4H/m
D) 3.64Ã 10Ã ¢ 3H/m
The magnetic susceptibility à m of this alloy is,
A) 4000
B) 4560
C) 5400
D) 6000
then shuts off its engines and coasts.Its coasting velocity is given by vx = vox t^2(1 /t^2)
,
where t1= 60 s.What is the displacement of the boat for the interval 0<t<Ã ¢ ?
#340153 on Dec 2023