The half-life of a muon at rest is 1.5 μs. Muons that have been accelerated to a very high speed and are then held in a circular storage ring have a half-life of 7.5 μs.a. What is the speed of the muons in the storage ring?b. What is the total energy of a muon in the storage ring? The mass of a muon is 207 times the mass of an electron.

measured by this observer to be 10 times longer than its lifetime when at rest relative to the observer? 3. The lifetime of a free neutron is 886 s. If a neutron moves with a speed of 2.9 x 108m/s relative to an observer in the lab, what does the observer measure the neutron's lifetime to be? 4. A computer in a laboratory requires 2.50 us to make a certain calcu- lation, as measured by a scientist in the lab. To someone moving past the lab at a relative speed of 0.995c, how long will the same cal- culation take? 5. The formula for length contraction gives the length of an interval on a ruler moving with velocity v relative to an observer as V1-v²/c² times the length of the same interval on a ruler at rest with respect to the observer. By what fraction is the length of a meter stick reduced if its velocity relative to you is measured to be 95 percent the speed of light? 6. If an electron is speeding down the two-mile-long Stanford Linear Accelerator at 99.98 percent the speed of light,…

1. Based on the problem below, if a crew member on the spaceship measures itslength to be 400 m, what is the length measured by an observer on earth? a. 34.2 mb. 44.1 mc. 56.4 md. 78.2 m 2. Based on the problem below, how far does the ship travel in relation to theearth during each pulse? a. 1.35 kmb. 4.21 kmc. 83.8 kmd. 94.5 km

A radioactive element is kept inside a laboratory. Person A is stationary with respect to the lab. Person B is moving at a speed of 0.5c with respect to the lab. Person C is moving at a speed of 0.9c with respect to the lab. Which person will measure the shortest half-life A. Person C B. Person A C. All of them measure the same half-life D. Person B

What is the total energy of an electron moving with a speed of 0.950 c? a. 2.6 x 10-13 J b. 1.1 × 10-13J c. 1.2 x 10-14 J d. 8.2 × 10-14 J

Suppose that you have found a way to convert the rest energy of any type of matter directly to usable energy with an efficiency of 61.0%. How many liters of water would be sufficient fuel to very slowly push the Moon 1.70 mm away from the Earth? The density of water is ?water=1.00kg/liter, the Earth's mass is ?earth=5.97×1024 kg, the Moon's mass is ?moon=7.36×1022 kg, and the separation of the Earth and Moon is ?E,M=3.84×108 m.

4. Consider following the following the fusion nuclear reaction: n+p+p→;He. What happens to the different types of potential energies of this system as a result the reaction (i.e. the electrical potential energy and the strong nuclear potential energy)? The atomic mass of He is 3.016029 u. a. The electrical potential energy and the strong nuclear potential energy both increase. b. The electrical potential energy increases and the strong nuclear potential energy decreases. c. The electrical potential energy increases and the strong nuclear potential energy remains the same. d. The electrical potential energy decreases and the strong nuclear potential energy increases. e. The electrical potential energy and the strong nuclear potential energy both decrease.

Particle track detectors are used to measure the speed of particles if the lifetime of the particle is known. Particle X has a lifetime of 256.2 ps. These particles are created in an experiment inside the detector by a given reaction. The particles leave 21.6 cm long tracks on average before they decay into other particles not observable by the detector.What is the average speed of the particles in terms of the speed of light?

these are all incorrect