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An electron moving parallel to the x axis has an initial speed of 3.70x10^6 m/s at the origin. Its speed is reduced to 1.40x10^5 m/s at the point x = 2.00 cm. Calculate the potential difference between the origin and that point. Which point is at the higher potential? The Answer is delta V= -38.9, x=0cm
A ladder of length L = 2.4 m and mass m = 14 kg rests on a floor with coefficient of static friction ?s = 0.56. Assume the wall is frictionless. find the normal force the floor exerts on the ladder
Suppose a proton and an alpha particle each have kinetic energy 8.6MeV. Find speed of the alpha particle
A uniform plank of length 4.7m and weight 204 N rests horizontally on two supports, with 1.1 m of plank hanging over the right support. To what distance x can a person who weighs 445N walk on the overhanging part of the plank before it just begins ..
A converging lens has a focal length of 100.0 cm. A 12.0-cm-tall object is located 124.0 cm in front of this lens. find Is the image real or virtual
A point charge q1=5microC and is fixed in place. From a horizontal distance of 6cm a small sphere of mass 0.004 kg and charge q2=2microC is fired towards the fixed charge at 40 m/s. What is the acceleration of the sphere when it is traveling 25 m/..
what are the magnitude and direction of its acceleration. find out the magnitude of the charge on the moving particle.
A person jumps from the roof of a house 3.6-m high. When he strikes the ground below, Find his velocity just before his feet strike the ground
Two charges Q1 = 48 muC and Q2 = 88 muC are found to have a potential energy of 43 J . What is the distance between the charges?
A 0.39 V potential di?erence is maintained across a 1.7 m length of tungsten wire that has a cross-sectional area of 0.85 mm2, What is the current in the wire
One particle has a mass of 4.41 x 10-3 kg and a charge of +6.92 ?C. A second particle has a mass of 6.52 x 10-3 kg and the same charge. The two particles are initially held in place and then released.
A capacitor with air between its plates is charged to 70 V and then disconnected from the battery. When a piece of glass is placed between the plates, the voltage across the capacitor drops to 50 V. What is the dielectric constant of this glass?
A 2.6k and a 1.8k resistor are connected in parallel and this combination is connected in series with a 1.8k resistor. If each resistor is rated at 1/2W, what is the maximum voltage that can be applied across the whole network.
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