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An electron initially at rest is accelerated between two parallel plates 2.000 cm apart. The space between the plates is a vacuum. The potential difference across the plates is 300.0 V.
What is the electric force on the electron between the plates?
The velocity vs time graph of an object is approximated by a triangle which starts at v=0 at t=0, rises to a maximum of v=6 m/s at t=6 sec, then returns to zero at t=10 sec. How far did the object travel?
The concrete wall of a building is 0.08 m thick. The temperature inside the building is 17.5°C, while the temperature outside is 0.0°C. What is the emissivity of the wall
A certain car battery with a 12.0 V emf has an initial charge of 178 A•h. assume that the potential across the terminals stays constant until the battery is totally discharged, for how long in hours can it deliver energy at the rate of 115 W.
Find the wavelength of the scattered photon when the scattered electron has its maximum kinetic energy
The electric field strength just outside the outer conductor of a coaxial cable of outer radius of 0.2cm is E=7200N/C directed inward. find the initial surface charge density of the outer conductor
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 126-kg laser sensor which measures the thickness of the ice, find the tension in the cable towing the sensor
A stationary destroyer is equipped with sonar that sends out 37.000 MHz pulses of sound. calculate the submarine's vertical speed
A 4.0 kg cube of iron slides from rest down a frictionless ramp (1.5 m above flat surface), How fast are they going after the collision
In 1581, when Galileo was 17 years old, he noticed one morning at the Cathedral in Pisa (just next door to the leaning tower) that after the chandeliers were lit several of them oscillated back and forth with different amplitudes, How long was the..
A car in a roller coaster moves along a track that consists of a sequence of ups and downs, Derive a general expression for the speed v of the car
A disk with mass m = 8.5 kg and radius R = 0.35 m begins at rest and accelerates uniformly for t = 18.8 s, to a final angular speed of ? = 28 rad/s. What is the moment of inertia of the disk?
A block of mass m is attached to a spring (spring constant k)which is attached to a wall, find the amplitude of the resulting simple harmonic motion?
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