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A spaceship is 1600 m long when it is at rest. When it is traveling at a certain constant speed its length is measured by external observers and it is found to be 1370 m.
What is the speed of the spaceship in terms of the speed of light?
In the kitchen of the spaceship the chef sets the oven timer for 1.20 hours to make roast beef. How much time does the roast beef spend in the oven when measured by external observers at rest?
One day when you come into physics lab you find several plastic hemispheres floating like boats in a tank of fresh water. What is the mass of the heaviest rock that, in perfectly still water, won't sink the plastic boat
Two blocks A and B of mass D and E respectively are kept in contact on a frictionless table. what is the force exerted by the expirimenter on A
The length between lenses equals 1m, the eyepiece has a focal point of 32mm, what is the magnification of an object at infinity
Find a circuit to change the relationship between waveform and zero-volt axis & calculating the period of waveform.
A cylinder contains a mixture of helium and argon gas in equilibrium at a temperature of 151? C. Boltzmann's constant is 1.38066 × 10?23 J/K, What is the rms speed of argon
What is the capacitive reactance of two square pieces of sheet metal 2.00 meters on a side, separated by 20.0 cm, which operate at an angular frequency of 6.000e+6 rad/s
A window of a car is found to be covered with 0.6cm of ice. If the area of the window is 1 m2, and the ice is at -12 degrees Celsius, what is the minimum heat required to melt all the ice
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.20 min, find the average velocity and degree south of west
q1. bob of mass m drops from a tree limb at the same time that esther also of mass m begins her descent down a
A loudspeaker is generating sound in a room. At a certain point, the sound waves coming directly from the speaker, What is the total intensity level
If the player hears the sound of the splash 3.19 s later, illustrate what was the initial speed given to the rock? Assume the speed of sound in air to be 343 m/s.
A pendulum swinging in a circular arc under the influence of gravity, has both centripetal and tangential components of acceleration. Where is the centripetal acceleration a maximum
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