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The y-component of the radiated magnetic field of a plane electromagnetic wave moving in the z-direction is given by By(t) = (1.20 ?T)sin [(2? rad) (z /340 m ? t /1.13 ?s)] The x-component of the magnetic field is always zero. What is the wavelength of this electromagnetic wave?
A 75.0 kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. how fast was the ball travelling
A thin rod with uniform length per unit length "lambda" is bent into the shape of an arc of a circle of radius R. What is the electric field at the origin
A tennis ball connected to a string is spun around in a vertical, circular path at a uniform speed, What is the magnitude of the tension in the string when the ball is at the bottom of the circle
A 1391.3 kg car is traveling at 29.8 m/s when the driver takes his foot off the gas pedal. It takes 4.9 s for the car to slow down to 20 m/s. How large is the net force slowing the car? Answer in units of N
What would be the equilibrium temperature when a 253-g block of copper at 281^circ C is placed in a 137g aluminium calorimeter cup containing 817-g of water at 14.5^circ C.
Mercury is approximately a sphere of radius 2.43 x 106 m. What is its circumference in kilometers and What is its surface area in square kilometers
A 55.0kg archer, standing on frictionless ice, shoots a 90.0g arrow at a speed of 50m/s. What is the recoil speed of the archer
Regarding the Earth and a cloud layer 800 m above the Earth as the "plates" of a capacitor, calculate the capacitance of the Earth-cloud layer system. What is the maximum charge the cloud can hold
Remember that the distance relationship is s = s0 + v0 t = 1/2 a t^2 An object falls freely from rest on a planet where the acceleration due to gravity is 20 m/s/s.
A man with mass m1 = 54 kg stands at the left end of a uniform boat with mass m2 = 174 kg and a length L = 2.6 m. After the man walks to the right edge of the boat, what is the new location the center of the boat
A 4.00 kg block slides down a frictionless inclined plane with an acceleration 3.00m/s2. What is the angle of the incline above horizontal
The concept of thermionic emission is the basis of modern X-ray tubes, which are the workhorse of a medical X-ray image. In this process a filament (a piece of metal in a vacuum) is heated by the application of electrical current.
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