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Consider a Rutherford scattering experiment in which 10 MeV α particles are scattered by a gold 19779Au nucleus. Calculate (a) The cross-section for scattering through an angle greater than 10?. (b) The differential scattering cross section dσ/dΩ in fm2 for scattering at 10
Block 1, of mass m1 = 4.90 kilogram, moves along a frictionless air track with speed v1 = 27.0 m/s. Find the magnitude pi of the total initial momentum of the two-block system
Air traffic controllers use radar to keep track of the location of aircraft. The radar displays an aircraft's location in terms of the compass direction from the controller to the aircraft, Write down its position vector in rectangular coordinates
An object with a mass of 5.10 kg is attached to the free end of the lightstring wrapped around a reel radius R=0.25 m and mass 3kg the reel is a solid disk, free to rotate in a vertical plane about the horizontal axis paasing through its center th..
A lamp (R = 151 ohms ), an electric heater (R = 24 ohms ), and a fan (R = 50 ohms ) are connected in parallel across a 119 V line. What power is expended in the heater
A worker stands still on a roof sloped at an angle of 36° abovethe horizontal. He is prevented from slipping by a staticfrictional force of 460 N. Find the mass of the worker
A person stands on a bathroom scale in an elevator and reads a weight of 611.5 N. What is the acceleration of the elevator if the person's mass is 53.0 kg? Make sure to include the correct sign in your answer, for the direction of the acceleration..
A young male adult takes in about 4.46 x 10-4 m3 of fresh air during a normal breath. Fresh air contains approximately 21% oxygen. find the number of oxygen molecules in a normal breath
A ball rolls down the track starting from rest at a height of h1= 20m. Find where the ball hits the ground
A balloon is rising at 10 m/s when its passenger throws a ball straight up at 12 m/s. How much later does the passenger catch the ball
A skater is initially spinning at a rate of 13.1 rad/s with a rotational inertia of 2.54 kg·m2 when her arms are extended. What is her angular velocity after she pulls her arms in and reduces her rotational inertia to 1.64 kg·m2?
A transformer is to be used to provide power for a computer disk drive that needs 7.0 V (rms) instead of the 120 V (rms) from the wall outlet. Find the number of turns in the secondary
A group of college students eager to get to Floride on a spring break drove the 637 mi trip with only minimum stops. They computed their average speed for the trip to be 54.2 mi/h. How many hours did the trip take?
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