After being produced in a collision between elementary particles, a positive pion ( π + ) must travel down a 1.90-km-long tube to reach an experimental area. A π + particle has an average lifetime (measured in its rest frame) of 2.60 × 10 −8 s; the π + we are considering has this lifetime, (a) How fast must the π + travel if it is not to decay before it reaches the end of the tube? (Since u will be very close to c , write u = (1 − Δ) c and give your answer in terms of Δ rather than u .) (b) The π + has a rest energy of 139.6 MeV. What is the total energy of the π + at the speed calculated in part (a)?
After being produced in a collision between elementary particles, a positive pion ( π + ) must travel down a 1.90-km-long tube to reach an experimental area. A π + particle has an average lifetime (measured in its rest frame) of 2.60 × 10 −8 s; the π + we are considering has this lifetime, (a) How fast must the π + travel if it is not to decay before it reaches the end of the tube? (Since u will be very close to c , write u = (1 − Δ) c and give your answer in terms of Δ rather than u .) (b) The π + has a rest energy of 139.6 MeV. What is the total energy of the π + at the speed calculated in part (a)?
After being produced in a collision between elementary particles, a positive pion (π+) must travel down a 1.90-km-long tube to reach an experimental area. A π+ particle has an average lifetime (measured in its rest frame) of 2.60 × 10−8 s; the π+ we are considering has this lifetime, (a) How fast must the π+ travel if it is not to decay before it reaches the end of the tube? (Since u will be very close to c, write u = (1 − Δ)c and give your answer in terms of Δ rather than u.) (b) The π+ has a rest energy of 139.6 MeV. What is the total energy of the π+ at the speed calculated in part (a)?
You're on an interplanetary mission, in an orbit around the Sun. Suppose you make a maneuver that brings your perihelion in closer to the Sun but leaves your aphelion unchanged. Then you must have
Question 2 options:
sped up at perihelion
sped up at aphelion
slowed down at perihelion
slowed down at aphelion
The force of the quadriceps (Fq) and force of the patellar tendon (Fp) is identical (i.e., 1000 N each). In the figure below angle in blue is Θ and the in green is half Θ (i.e., Θ/2). A) Calculate the patellar reaction force (i.e., R resultant vector is the sum of the horizontal component of the quadriceps and patellar tendon force) at the following joint angles: you need to provide a diagram showing the vector and its components for each part. a1) Θ = 160 degrees, a2) Θ = 90 degrees. NOTE: USE ONLY TRIGNOMETRIC FUNCTIONS (SIN/TAN/COS, NO LAW OF COSINES, NO COMPLICATED ALGEBRAIC EQUATIONS OR ANYTHING ELSE, ETC. Question A has 2 parts!
The force of the quadriceps (Fq) and force of the patellar tendon (Fp) is identical (i.e., 1000 N each). In the figure below angle in blue is Θ and the in green is half Θ (i.e., Θ/2). A) Calculate the patellar reaction force (i.e., R resultant vector is the sum of the horizontal component of the quadriceps and patellar tendon force) at the following joint angles: you need to provide a diagram showing the vector and its components for each part. a1) Θ = 160 degrees, a2) Θ = 90 degrees. NOTE: USE DO NOT USE LAW OF COSINES, NO COMPLICATED ALGEBRAIC EQUATIONS OR ANYTHING ELSE, ETC. Question A has 2 parts!
Chapter 37 Solutions
University Physics with Modern Physics, Books a la Carte Edition; Modified MasteringPhysics with Pearson eText -- ValuePack Access Card -- for ... eText -- Valuepack Access Card (14th Edition)
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