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The identical twins Speedo and Goslo join a migration from theEarth to Planet X. It is 20.0 light-years away in a reference framein which both planets are at rest. The twins, of the same age,depart at the same time on different spacecraft. Speedo's crafttravels steadily at 0.900c, Goslo's at 0.740c. Calculate the age difference between the twins after Goslo'sspacecraft lands on Planet X.
a 6000 kg struck moving at 75 km/hr hits a stopped 3000kg car. they lock bumpers and skip to a stop. find the speed of the truck and car system
Planet X is 307 times more massive than Earth, and its radius is 10.8 times Earth's radius. How many times more would you weigh on Planet X
An object starts from rest at t= 2 s at an initial position of x = 7.2 m and moves with constant acceleration. What is the magnitude of the acceleration of the object
A school yard teeter-totter with a total length of 5.2m and a mass of 36kg is pivoted at its center. A 19 kg child sits on one end of the teeter-totter.
if the power generated by a turbine is 20kw, what is the equivalent horsepower of this turbine
An asteroid is discovered heading straight toward Earth at 13 km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 min, after which the asteroid is moving at 26 degree to its original path at..
A ball and a thin plate are made from different materials and have the same initial temperature. At what temperature will the ball fall through the hole in each arrangement
A string with both ends held fixed is vibrating in its third harmonic. The waves have a speed of 186 m/s and a frequency of 225 Hz, Calculate the maximum transverse velocity of the string at this point
Obtain the wavelength in vacuum for blue light, whose frequency is 6.253 x 1014 Hz. Express your answer in nanometers (1 nm = 10?9 m)
A rock of mass 43 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 257 N. What is the magnitude of the acceleration of the rock?
A wire of radius R carries a current with density: J =C(R-r). Find the total current carried by the wire
Particle X has a speed of 0.750c and a momentum of 5.78E-19kg*m/s. What is the total energy of the particle
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