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a) An electron is moving east in a uniform electric field of 1.55N/C directed to the west. At point A, the velocity of the electron is 4.50 × 105 m/s pointed toward the east. What is the speed of the electron when it reaches point B, which is a distance of 0.395 m east of point A?
b) A proton is moving in the uniform electric field of part A. At point A, the velocity of the proton is 1.87×104 m/s, again pointed towards the east. What is the speed of the proton at point B?
An object's true weight is 123 N. When it is completely submerged in water, its apparent weight is 82 N. what is the density of the object
A series RLC circuit consists of a 96.0 ? resistor, a 0.200Hinductor, and a 43.0 ?F capacitor. It is attached to a120 V/60 Hz power line. What is the average power loss
a table has a mass of 500 kg. the floor is known to have a vibration amplitude of 1 igravem at a frequency of 200 hz
Two balls are released simultaneously from the top of a tall building. Ball A simply dropped with no initial velocity, and Ball B is thrown downward with and initial velocity of 12 m/s. How far has each ball dropped
A large window measures 1.8m by 3.2m . At what rate will heat be conducted through the window when the room temperature is 27C and the outside temperature is 0C if the window consists of a single pane of glass 4.4mm thick. (Assume that there is a con..
In the Millikan oil-drop experiment, an electric field of 1.92 x105 N/C is maintained at balance across two platesseparated by 1.50 cm. Find the potential difference between the plates
four point charges are arranged in a square with side length 1 meter. charges qa and qd have charges of q 1 uc and
A gamma-ray photon produces an electron-positron pair, each with a kinetic energy of 230keV. What was the energy of the photon
A uniform cylinder of radius 11 cm and mass 24 kg is mounted so as to rotate freely about a horizontal axis that is parallel to and 4.6 cm, What is the rotational inertia of the cylinder about the axis of rotation
A light ray travels inside a large glass block and approached the glass-air interface at some angle relative to the normal (perpendicular to the surface). After entering the air, the light ray's
A red ball is thrown down with an initial speed of 1 m/s from a height of 27 meters above the ground. What is the maximum height the blue ball reaches
Sound propagating through air at 30oC passes through avertical cold front into air that is 4.0oC. If the soundhas a frequency of 2400 Hz, by what percentage does its wavelength change in crossing the boundary?
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