The Lorentz-Fitzgerald Contraction

The USS Enterprise approaches the planet Seti Alpha 5 at a speed of 0.800c. Captain Kirk observes an airplane runway on the planet to be 2.00 km long. The air controller on the planet says that the runway on the planet is how long?

Starting from E2=(pc)2 + (mc2)2, derive p=h/wavelength for proton. Then verify E*wavelength=constant for proton.

Starting from E2=(pc)2 + (mc2)2, derive p=h/wavelength for proton. Then verify E*wavelength for proton. All the 2's are squares, i didnt know how to type that since I dont have that key function on keyboard.

Calculate the speed of an electron whose kinetic energy is twice as large as its rest mass energy.

Calculate the speed of an electron ehose kinetic energy is twice as large as its rest mass energy. Express V in C ( light speed). (Relativistic kinetic energy) P.S. Please help me with this as detailed as possible so I can understand the entire process. Thank you.

Rim of a cast iron flywheel

The rim of a castiron flywheel is 0.5m wide and its inner and outer diameters are 1.8m and 2.6m respectivly.Calculate a)the moment of inertia lc of the rim about its geometric axis; b)the radius of gyration k. need detailed simplified solution,no shortcuts thanks....

[Prob 8.12] Determine the compressional force? What is the intake temperature in a Carnot engine?

Referring to a person, determine the compressional force in the spine when the person bends forward to lift a 300N object. The spine and upper body are represented as a uniform horizontal rod of weight 400N. The erector spinalis muscle attaches at a point two thirds of the way up the spine and the angle between the spine and t ...continues

{21.24} A 3kg particle has a velocity of (3i-4j) m/s. Find the magnitude of its momentum?

A 3kg particle has a velocity of (3i-4j) m/s. Find the magnitude of its momentum? ============================================= Answers: a) 9kg m/s b) -12 kg m/s c) 15 kg m/s d) 3 kg m/s ################################################## A sinusoidal wave is described by y=(0.30m)sin(0.20x-40t). Determine the wave speed. ...continues

{11.12}Steam at 100 degree C is added to ice at 0 degree C. The mass of the steam is 10.0kg and the mass of the ice is 50.0g. What is the final temperature of the mixture?The exhaust temperature of a Carnot heat engine is 350 degree C. What is the intake temperature if the efficiency is 25.0 percent?

Steam at 100 degree C is added to ice at 0 degree C. The mass of the steam is 10.0kg and the mass of the ice is 50.0g. What is the final temperature of the mixture? ================================================= Answers: a) 20.4 degree C b) 40.4 degree C c) 80.8 degree C d) 90.1 degree C ########################### ...continues

{23.4} A house has well-insulated walls. It contains a volume of 100 m^3 of air at 300 K. What is the necessary flow speed in the duct?

A house has well-insulated walls. It contains a volume of 100 m^3 of air at 300 K. Calculate the energy required to increase the temperature of this diatomic gas by 2 degree C. Assume it is heating of constant pressure and use Cp = 7R/2. ================================================= Answers: a) 118 kJ b) 236 kJ c) 354 ...continues

{25.18} How far is the speaker from each observer? The velocity (in m/s) of the body at t=1 second is:

A loudspeaker is placed between 2 observers who are 120m apart, along the line connecting them. If one observer records a sound level of 60.0 dB and the other records a sound level of 90 dB, how far is the speaker from each observer? Hint: use the equation which relates to the difference between the decibel levels to the distanc ...continues

{20.2} At what rate is the resultant force?Find the change in potential energy?

The speed of a 4.0kg object is given by (2t) m/s, where t is in seconds. At what rate is the resultant force on this object doing work at t = 1 second? ================================================= Answers: a) 48 W b) 40 W c) 56 W d) 16 W ################################################### A 10kg object is initially ...continues