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Three concentric uniformly charged isolating shells (hollow spheres) of radii 6cm, 10cm, and 20cm each carry a charge. The smallest shell carries 3nC, the medium 4nC, and the largest shell 5nC. Here, concentric means that all three shells share the same center point. Calculate the magnitude of the electric field at a point 15cm from the center point along the x-axis, indicate the direction of the electric field in your diagram.
If lithium ion Li+2 is treated as a classical system of one electron of charge ?e going around a nucleus of charge 3e on a circle of radius 1.77× 10?11 m, find the ionization energy of the electron
An Atwood Machine consists of two blocks m1= 15 kg and m2= 23 kg connected by a masslessstring, What is the normal force on the pin supporting the pulley
A 5kg block initially at rest is pulled to the ight along a horizontal surface by a constant, force of 30N acting at 53 degrees above the horizontal. Find the net work done on the block
A hockey puck slides over ice with ?k = 0.013. What initial speed should the puck have so it travels the 40m length of the rink
What is the angular displacement, angular velocity and angular acceleration of the second hand on a clock over the time interval in which it moves from the 12 to the 6
A 370 kg rocket sled can be accelerated at a constant rate from rest to 1200 km/h in 2.0 s. What is the magnitude of the required net force
The mass of Dr. Smith and the skateboard are 80 k. Dr. Alex throws a 2.5 kg bal horizontally at 3.0 m/s to the right at Dr. Smith, who catches it
The springs of a 1700-kg car compress 4.90mm when its 63.0-kg driver gets into the driver's seat. If the car goes over a bump
A car travels a distance of 280 m by accelerating from rest at 2.00 m/s2 for 7.00 s and then coasting at constant speed the rest of the way. How long does the trip take
A 0.170 kg tumour is being irradiated by a radioactive source. Each decay of the radioactive source produces a particle with an energy of 0.450 MeV. find the activity of the radioactive source
A 22.5 g bullet is fired from a rifle. It takes 2.60 10-3 s for the bullet to travel the length of the barrel, find the average net force exerted on the bullet
The positions of three particles, written as (x, y coordinates, are: particle 1 (mass 3.7 kg) at (4 m, 0 m); What is the location of the center of mass
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