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A certain star is 18.6 light years away,
a. Find how long would it take a spacecraft traveling .950c to reach that star from Earth as measured by observers on earth?
b. Find how long would it take a spacecraft traveling .950c to reach that star from Earth as measured by observers on the spacecraft
c. Find what distance is travelled according to those on the spacecraft?
d. Find what will the spacecraft occupants compute their speed to be from the results of b and c?
A spotlight is coated so that it won't transmit magenta light from its white-hot filament. What colour emerges from coated spotlight.
a 4.8 kg dog stands on an 19 kg flatboat and is 6.1 m from the shore. he walks 2.2 m on the boat toward shore and then
Dip our finger into a pan of water twice each second, producing waves with crests that are separated by 0.15 m Determine the frequency period and speed of these water waves
this is the interference pattern on a viewing screen behind two slits. how would the pattern change if the two slits
A uniform rod of weight W is supported horizontally by two bricks at its ends. Calculate the Force on the other support immediately thereafter, it should be in terms of W
A rock is dropped from a bridge to the water below. It takes 2.4 s to hit the water. Find the final speed of the rock when it hits the water. How high is the bridge above the water
A Carnot engine operates between the temperatures 420K and 300K, How much heat is discarded to the cold reservoir as this work is done
For a car moving at speed v, the force of air drag on the car is proportional to v^2 . Suppose the power output of the car is doubled, by what factor is the speed of the car increased
Liquid nitrogen has a boiling point of 77.3 K and a latent heat of vaporization of 2.01 105 J/kg. How many kilograms of nitrogen are boiled away in a period of 5.00 h
A sample of helium-4 behaves as an ideal gas as it is heated at constant pressure from 292 K to 402 K. If 19 J of work is done by the gas during this process, what is the mass of helium present?
Pandora Jewellery has turn into the best choice for ladies all more than the world who desires to express their personal style. The Pandora Bracelets provide a rich array of stylish diamond jewellery developed by artisans utilizing the finest mate..
A man of mass 65 kg falls stiff-legged straight down from a height of 2m. He lands on one foot. The femur is a bone in the leg with the length L=.65m, and a cross-sectional area of about 2.0 x 10^-4m^2. The Young's modulus for bone is 9.4x 10^9 N/..
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