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Suppose a news report stated that starship Enterprise had just returned from a 5 year voyage while traveling at 0.81c.
(a) If the report meant 5.0 years of Earth time, how much time elapsed on the ship?
years
(b) If the report meant 5.0 years of ship time, how much time passed on Earth?
A jet plane passes over you at a height of 4990 m and a speed of Mach 1.75. Find the Mach cone angle
a revolving car wheel has a radius of 15m and a mass of 3 X 10^4 kg. what torque needs to be applied to stop the car wheel in 15 sec
The brakes are applied to a car traveling on a dry, level highway. A typical value for the magnitude of the car's acceleration is 5.45 m/s2. If the car's initial speed is 33 m/s, how long does it takes to stop and how far does it travel, starting ..
Electron acquires 5x10^-16 kinetic energy when it is accelerated by an electric field from Plate A to Plate B, what is the potential difference Vba between the two plates
Illustrate what is the time it takes for the bullet to hit the ground, how far down range does the bullet travel, and what is the resultant velocity (in m/s) and final angle?
a ray of light incident upon a mirror makes an angle of 33.9° with the mirror. What is the angle between the incident ray and the reflected ray
A sled starts up an incline of 350 with the horizontal. The sled starts from the bottom with an initial velocity of 5 m/s. (a) How far u p the incline does it go? A second sled starts to slide from the top when the first sled starts to slide down...
An RC series circuit has R = 1.35 kOhm, L = 225 mH, and C = 2.50 microFarads and is connected across a 200 V (rms), find the impedance of the RC combination
you take a 100 g uniform meter stick and hang 200 g on the 10 cm mark, where should you clamp the meter stick so that it is in balanace
Your airplane is caught in a brief, violent downdraft. To your amazement, the pretzels on your seatback tray rise vertically, What's the downward acceleration of the plane
A 6 cm diameter conducting loop with resistance of 10m\Omega is placed perpindicular to a variable magnetic field B. Determine the current and its direction induced in the loop
A block slides down an inclined plane, starting from rest and being pushed with a constant acceleration of 4.95 m/s2 over a distance of 21.6 cm. Find the total time the block is in motion
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