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A plane polarized electrodynamics wave travelling in a dielectric medium of refractive index 'n' is reflected at normal incidence from the surface of a conductor.find the phase change undergone by its electric vector if the refractive index of the conductor is n2=n(1+ip)
A balsa wood block of mass 55 gram floats on a lake, bobbing up and down at a frequency of 2.9 Hz. Find what is the value of the effective spring constant of the water
A battery with potential of 1.50 V is in a circuit with 9.7 milliamps flowing. What is the power output of the battery?
A canal boat (mass=25,000 kilograms) is being towed at a uniform velocity v=3.10 m/s, Determine the magnitude and direction of the towing force
A sleigh and driver with a total mass of 120kg are pulled up a hill with a 15degrees incline by a horse, what is the power output of the horse
A high-energy pulsed laser emits a 1.5-ns-long pulse of average power 2.6×1011 W. The beam is 2.3×10?3 m in radius. Determine the rms value of the electric field
X-rays of energy 30 keV are direcyed onto a cubic crystal. The first diffraction peakis measured to 35 degrees from the primary crystal plane, What is the atomic spacing of the crysta's primary Bragg planes
a girl follows a passage 200m straight west then 210m in a direction 45 degrees east of south and then 280m at
A 20-cm-diameter vertical cylinder is sealed at the top by a frictionless 18kg piston. What is the gas pressure inside the cylinder
What frequency is heard by an observer who hears the 450-Hz siren on a police car traveling at 35 m/s away from her
Two 1.8 V. batteries are connected together in series to a bulb whose resistance is 50 ohms. How many electrons leave each battery per minute
An electric motor rotating a workshop grinding wheel at a rate of 81 rev/min is switched off. Suppose the wheel has a steady negative angular acceleration of magnitude 1.90 rad/s2.
A person consumes a meal containing 17 kcal. What is the power this meal produces if it is to be "burned off" due to exercise in 6 hours
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