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In the electron gun pictured, a potential differenceof 10.9 kV is found to bringelectrons from rest at the cathode to 6.2 x 107 m/sat the anode. If the electrons reach the anode with a speedof 2.9 x 107 m/s,what is the potential difference between the cathode and theanode?
Our solar system is about 1.34 parsecs away from planet A. An astronaut is moving away from earth toward planet A at 0.80c as measured in the earth's reference frame. What frequency of light is observed by the earthlings
A student eats a candy bar that may give 1.8 * 10^6 joules of energy. if the student has a mass of 60 kg, how high will he have a climb a ladder to offset completely the energy contained in the candy bar.
A sound wave from a siren has an intensity of 88.8 W/m2 at a certain point, What is the intensity level of the sound wave due to the ambulance
A solar eclipse is projected through a pin- hole of diameter 0.247mmand strikes a screen 3.12 m away. What is the radius of the first diffraction minimum
The polarizability of large atoms can be estimated by using the formula for the polarizability of a metal sphere, \(\alpha = 4\pi\epsilon a^{3}\), Estimate the induced dipole moment of an oxygen atom
An aircraft weighing 812 N is accelerated at 11.8 m/s2 for 5 seconds, at which time the aircraft launches. Assume the acceleration is constant
A shopper pushes a cart 49 m south down one aisle and then turns 90.0° west and moves 11 m. What is the smallest possible displacement of the shopper
A 0.954-kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. compute the average current supplied to the car\'s motor?
A screen is placed 47.0 cm from a single slit that is illuminated with light of wavelength 682 nm. what is the width of the slit
A particle moving along the x-axis has its position described by the function x =( 5.00 t3? 3.00 t+ 2.00 )m, what are the particle's position, velocity and acceleration
A bird watcher meanders through the woods, walking 1.35 km due east, 1.81 km due south, Determine the magnitudes of the bird watchers displacement
define what is the unknown capacitance. what focal length eyepiece should she use.
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