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You want to visit your friend Ford Prefect, who lives in the vicinity of Betelgeuse, 425 light-years from Earth (that is, light takes 425 years to arrive from Betelgeuse). You hitch a ride on a passing starcruiser, and as measured by Earth observers, you travel so fast that the trip only takes 426 years.
(a) How long was the trip according to you?
(b) What is the distance between Betelgeuse and Earth, according to you?
A 5.78 cm long rod in the shape of a rectangular solid has cross section dimensions 28.7 mm x 42.6 mm. What is the current in the block
A circuit containing a 5.5 H inductor has an alternating current supplied to it. If Irms is 5.1 A and Vp is 76 V, find the frequency of the signal
A plastic block of dimensions 2.5 cm x 3.8 cm x 4.0 cm has a mass of 28.0 g. What is the density of the block
A 50-gram ice cube at 0 degrees celsius is heated until 40 grams has become water at 100 degrees celsius and 5.0 grams has become steam at 100 degrees celsius
1.) Hold the baseball and sheet of paper side by side. Predict which one will travel with the faster motion when released. Then drop them both at the same time. Did your prediction match the results?
A ship's mast reaches to a height of 15 meters above the surface of a 10-meter-deep lake. When the sun is 30° above the horizon, how long will the shadow of the mast be on the bottom of the lake?
When the power is turned off on a turntable spinning at 59.0rpm, What is the angular acceleration (in rad/s2), of this turntable
a ball rolls off a platform that is 7 meters above the ground. the balls horizontal velocity as it leaves the platform
An air-filled toroidal solenoid has a mean radius of 15.0 and a cross-sectional area of 5.02, What is the least number of turns that the winding must have
An ideal refrigerator utilizes a Carnot cycle operating between 0 degrees Celcius and 18 degrees Celcius. How much energy must be supplied to the refrigerator
The spring constant for the tendon is the same for both groups, 33 N/mm. Illustrate what is the difference in maximum stored energy between the sprinters and the nonathletes?
the period of rotation of the moon is about 27 days, 8 hours. The mass of the moon is 7.35x10^22 kg, Find the radius of the satellites orbit
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