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A wire loop of radius 0.40 m lies so that an external magnetic field of magnitude 0.40 T is perpendicular to the loop. The field reverses its direction, and its magnitude changes to 0.20 T in 2.0 s. Find the magnitude of the average induced emf in the loop during this time. (need answer in mV.)
Determine the image distance for an object do=7.900 cm from a diverging lens of radius of curvature 6.320 cm and index of refraction 1.800.
A gallon of gasoline contains about 1.3x10^8 joules of energy. A 2000-kg car traveling 20 m/s skids to a stop. Estimate how much gasoline it will take to bring the car back to the original speed
The average threshold of dark-adapted (scotopic) vision is 4.00 10-11 W/m2 at a central wavelength of 500 nm. how many photons per second enter the eye
A monkey is swinging on a vine. The monkey's mass is 72kg, What is the length of the vine
The cord between the pouch and the person's hand has negligible mass and will break when the tension in the cord is 33.0 N or more. Assume the sling thrower could gradually increase the speed of the stone.
A football player with a mass of 89 kg and a speed of 2.1 m/s collides head-on with a player from the opposing team whose mass is 120 kg. Find the speed of the second player
Explain the difference between a fluorescence emission spectrum and a fluorescence excitation spectrum, What is the force constant for the CO bond
In a television tube, electrons travel down the tube and strike the fluorescent material at the end of the tube. Their impact with this material causes light to be emitted, How long does the acceleration take
A penny of mass 3.1g rests on a small 20g block supported by a spinning disk. The coefficients of friction between the block and disk are 0.75 (static) and 0.64 (kinetic).
A solution has a hydronium-ion concentration of 1.0 x 10^-3 mol per liter. What is the hydroxide-ion concentration of this solution
A 150-g block is projected up a ramp with an initial speed of 8.1 m/s. If the ramp is inclined 28° with the horizontal, how far along the surface of the ramp does the block slide before coming to a stop
A jet plane lands with a velocity of +103 m/s and can accelerate at a maximum rate of -5.00 m/s2 as it comes to rest. find the minimum time needed before it can come to rest
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