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You are at the controls of a particle accelerator, sending a beam of 1.50><107 m/s protons (mass m) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one of the nuclei of the unknown element. All such protons rebound with a speed of 1.20><107 m/s. Assume that the initial speed of the target nucleus is negligible and the collision is elastic.
(a) Find the mass of one nucleus of the unknown element. Express your answer in terms of the proton mass m.
(b) What is the speed of the unknown nucleus immediately after such a collision?
(c) What is the unknown element?
A tuning fork vibrating at 513 Hz falls from rest and accelerates at 9.80 m/s2. How far below the point of release is the tuning fork
Three European Union countries (the United Kingdom, Sweden, and Denmark) chose not to be part of the EMU. Can you think of any reasons why they would do so?
A solid sphere rolling without slipping on a rough horizontal surface with a linear speed 21m/s collides elastically with a fixed, smooth vertical wall. Find the speed of the solid sphere after it has started pure rolling in the backward direction. T..
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a 1500 wrecking ball hangs from a 18 -long cable. the ball is pulled back until the cable makes an angle of 29.0 with
q1. before starting this problem review conceptual. the force vector a has the magnitude of 75.0 newtons n and points
A certain car is capable of accelerating at a rate of 0.52 m/s2. How long does it take for this car to go from a speed of 27 mi/h to the speed of 33mi/h.
ski jumper leaves the ski track moving at 25 m/s. The landing incline below her falls off with a slope of 33 degrees. How long is the ski jumper in the air
A dc motor has coils with a resistance of 13 ? and is connected to an emf of 120.0 V. When the motor operates at full speed, the back emf is 72 V. What is the current when the motor is at full speed
Suppose a city of one million inhabitants builds a data network. Suppose that each inhabitant, during the busiest hour of the day, is involved in an average.
A 90° elbow is used to direct water (? = 1000 kg/m3) flow at a rate of 25 kg/s in a horizontal pipe upward. The di-ameter of the entire elbow is 10 cm. The elbow discharges water into the atmosphere, and thus the pressure at the exit is the local ..
Determine the magnitude of door's angular acceleration.
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