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A stationary particle of charge q = 2.4 × 10-8 C is placed in a laser beam (an electromagnetic wave) whose intensity is 2.6 × 103 W/m2. Determine the maximum magnitude of the (a) electric and (b) magnetic forces exerted on the charge. If the charge is moving at a speed of 3.7 × 104 m/s perpendicular to the magnetic field of the electromagnetic wave, find the maximum magnitudes of the (c) electric and (d) magnetic forces exerted on the particle.
A 255-kg box is being pushed on a surface at a constant velocity using a force F=200 N as shown at right. What is the coefficient of friction between the box and the surface
asssume that in a particular vacuum tube the potential of the anode is 340 V higher than that of the cathode. If an electron leaves the surface of the cathode with zero initial speed, what is its speed when it strikes the anode.
a proton is fired with an initial velocity of 1.5x106 ms into a uniform electric field. the proton was brought to a
Copper wire has a breaking stress of about 3×108 N/m2. What is the maximum load that can be hung from a copper wire of diameter 0.66 mm
In the Bible, Noah is instructed to build an ark 300 cubitslong, 50.0 cubits wide, and 30.0 cubits high . Historical recordsindicate a cubit is equal to half a yard.
A pendulum has a period of 0.80s on Earth. What is its period on Mars, where an acceleration of gravity is about 0.37 that on Earth.
A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.870 m/s encounters a rough horizontal surface of length script l = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.360 and..
The electrons in a metal that produce electric currents behave approximately as molecules of an ideal gas. The mass of an electron is me = 9.109x10-31 kg. If the temperature of metal is 311 K, what is the root-mean-square speed of the electrons.
A 1800 kg car traveling north (+) at 70 km/h collides at an intersection with a 2000 kg car traveling west (-) at 57 km/h. The two cars stick together. What is the total momentum of the system before the collision?
A small immersion heater can be used in a car to heat a cup of water for coffee or tea. suppose the manufacturer's claim of 60% efficiency.
Initially, the translational rms speed of a molecule of an ideal gas is 460 m/s. The pressure and volume of this gas are kept constant, find the final translational rms speed of the molecules
Compare teh parameters for H (for magnetostatics) and D (for electrostatics). In your discussion include comments on their origin, physical interpretation, connection to "free" quantities, and their usefulness in real world applications. There should..
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