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A speeder is pulling directly away and increasing his distance from a police car that is moving at 23 m/s with respect to the ground. The radar gun in the police car emits an electromagnetic wave with a frequency of 6.9 x 109 Hz. The wave reflects from the speeder's car and returns to the police car, where its frequency is measured to be 210 Hz less than the emitted frequency. Find the speeder's speed with respect to the ground.
The negative terminals of three batteries (3V, 6V, 9V) are each connected to a 150 ohm resistor. what is the voltage across the gap in the broken wire
What is the magnitude of the acceleration of a modified Atwood machine if the mass of the cart is 3 kg and the hanging mass is 12 kg
a wire carrying a current is placed in a uniform magnetic field. When a current of 3.7A flows in the wire there is a force of 0,075N on each 18cm of wire in the field
An observer on the ground watches the boy throw the can and catch it. In this observer's ground frame of reference, explain the shape of can's path and determine the initial velocity of the can.
A spark occurs at the tip of a metal needle if the electric field strength exceeds 4.00×106 N/C, What is the minimum surface charge density for producing a spark
A mica sheet 0.969 ?m thick is suspended in air. In reflected light, there are gaps in the visible spectrum at 460, 525, Calculate the index of refraction of the mica sheet
in this assignment you will apply key concepts covered in the module readings. you will identify the component parts
Find out (a) the coefficient of kinetic friction between m2 and the incline, (b) the acceleration of each mass, and (C) the tension in the string.
A helium gas cylinder has a pressure of 28 atm. What fraction of the original amount of helium remains in the cylinder
The runner turns around and runs in the -x direction at the same speed. Now what is the kinetic energy of the runner
Two point charges q = 97.0 nC and q = -97.0 nC are in vacuum located on the x axis at - 17.0 cm, calculate the total electric flux through the y-z plane
A conducting rod whose length is ? = 1.60 m is placed on frictionless U-shaped metal rails that is connected to a lightbulb having a resistance of 4.00, At what rate is energy dissipated in the lightbulb
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