Creating a Particle. Two protons (each with rest mass M = 1.67 × 10 −27 kg) are initially moving with equal speeds in opposite directions. The protons continue to exist after a collision that also produces an η 0 particle (see Chapter 44). The rest mass of the η 0 is m = 9.75 × 10 −28 kg. (a) If the two protons and the 17° are all at rest after the collision, find the initial speed of the protons, expressed as a fraction of the speed of light , (b) What is the kinetic energy of each proton? Express your answer in MeV. (c) What is the rest energy of the η 0 , expressed in MeV? (d) Discuss the relationship between the answers to parts (b) and (c).
Creating a Particle. Two protons (each with rest mass M = 1.67 × 10 −27 kg) are initially moving with equal speeds in opposite directions. The protons continue to exist after a collision that also produces an η 0 particle (see Chapter 44). The rest mass of the η 0 is m = 9.75 × 10 −28 kg. (a) If the two protons and the 17° are all at rest after the collision, find the initial speed of the protons, expressed as a fraction of the speed of light , (b) What is the kinetic energy of each proton? Express your answer in MeV. (c) What is the rest energy of the η 0 , expressed in MeV? (d) Discuss the relationship between the answers to parts (b) and (c).
Creating a Particle. Two protons (each with rest mass M = 1.67 × 10−27kg) are initially moving with equal speeds in opposite directions. The protons continue to exist after a collision that also produces an η0 particle (see Chapter 44). The rest mass of the η0 is m = 9.75 × 10−28 kg. (a) If the two protons and the 17° are all at rest after the collision, find the initial speed of the protons, expressed as a fraction of the speed of light, (b) What is the kinetic energy of each proton? Express your answer in MeV. (c) What is the rest energy of the η0, expressed in MeV? (d) Discuss the relationship between the answers to parts (b) and (c).
Definition Definition Rate at which light travels, measured in a vacuum. The speed of light is a universal physical constant used in many areas of physics, most commonly denoted by the letter c . The value of the speed of light c = 299,792,458 m/s, but for most of the calculations, the value of the speed of light is approximated as c = 3 x 10 8 m/s.
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Silver/
silver oxide
Zinc
zinc/oxide
Car P moves to the west with constant speed v0 along a straight road. Car Q starts from rest at instant 1, and moves to the west with increasing speed. At instant 5, car Q has speed w0 relative to the road (w0 < v0). Instants 1-5 are separated by equal time intervals. At instant 3, cars P and Q are adjacent to one another (i.e., they have the same position). In the reference frame o f the road, at instant 3 i s the speed o f car Q greater than, less than, or equal to the speed of car P? Explain.
Car P moves to the west with constant speed v0 along a straight road. Car Q starts from rest at instant 1, and moves to the west with increasing speed. At instant 5, car Q has speed w0 relative to the road (w0 < v0). Instants 1-5 are separated by equal time intervals.
Chapter 37 Solutions
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