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Consider the Point Source and Guard Ring configuration as shown in quadrant B of Fig. 1. If you apply 28V to the guard ring and 0V to the central point on the conductive paper
(a) Where is the electric potential most positive?
(b) Where is the electric potential most negative?
(c) What is the electric potential outside the guard ring? Does it vary?
A 32.9-kg child swings on a rope with a length of 6.11 m that is hanging from a tree. At the bottom of the swing, the child is moving at a speed of 4.2 m/s. What is the tension in the rope?
The wave function y(x, t) for a certain standing wave on a string fixed at both ends is given by y(x, t) = 3.70 sin (0.220x) cos (270t), What is the speed of transverse waves on this string
a. a particle of mass m and energy e is inside a square tube with infinite potential barriers at x 0 x a y 0 and y
A 50 kg person stands at the edge of a 7.4 m diameter circular platform, which is mounted horizontally on frictionless bearings and has a total mass of 300 kg. What is the magnitude of the speed of the person (in m/s) with respect to the ground
A stubborn 110 kg pig sits down and refuses to move. Calculate the force which farmer needs to apply to budge the pig
A motor has an armature resistance of 3.25Ω . If it draws8.20 A when running at full speed and connected to a 120-V line, how large is the back emf
A 71kg student runs at 6.0m/s , grabs a hanging rope, and swings out over a lake. He releases the rope when his velocity is zero, What is the angle when he releases the rope
A tungsten cathode with work function 4.5 eV is heated torelease electrons that are then initially at rest outside the cathode. The electrons are accelerated by a potentialdifference to create a beam of electrons with a deBroglie wavelength of 0.0..
a simple heater for a cup of water consists of an insulated resistive coil that plugs directly into a 120 v electrical
which one of the following statements concerning the momentum of a systemnbspwhen the net force acting on the system is
A pilot wishes to fly due east. If the planes maximum speed is 683 km/hr and there is a 21.4 km/hr wind from the north, what must the planes velocity be in order to fly due east
A dentist uses a mirror to examine a tooth that is 1.25 cm in front of the mirror. The image of the tooth is formed 12.0 cm behind the mirror. Determine the mirror's radius of curvature
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