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A certain star is 18.6 light-years away. How long would it take a spacecraft traveling 0.950c to reach that star from Earth, as measured by observers?
a) On earth
b) On the spacecraft
c) What is the distance traveled according to observers on the spacecraft
d) What will the spacecraft occupants calculate their speed to be from the results of b) and c)
an infinite line of charge produces a field of magnitude 4.90 x 104 nc at a distance of1.9m. calculate the linear
A 0.0017T magnetic field and a 5.7 x 10^3 N/C electric field both points in the same directions. Determine the magnitude and directions of the net force on the charge
A cube of mass m is sliding without friction at speed vo. It undergoes a perfectly elastic collision with the bottom tip of a rod length d and mass M = 2m. The rod is pivoted about a frictionless axle through its center, and initiall y it hangs strai..
a sketch the electric field in the interior and the exterior of a spherical metal shell 6 cm in radius if the shell has
Two opposite point charges of magnitude 2.500e-6 C are located near the origin. What is the magnitude of the dipole moment vector for this pair of charges
A man standing on very slick ice fires a rifle horizontally. The mass of the man together with the rifle is 70{\rm kg} , what is the final speed of the man
a swimmer heads directly across a river swimming at 1.8 ms relative to the water. she arrives at a point 37 m
suppose a satellite is in a circular orbit 5.425 earth radii above the surface of the earth 6.425 earth radii from the
Light of wavelength 800nm is incident on a metallic surface. if the stopping potential for the photo-electrons ejected from the metal is 0.35 volts, find the work function for the metal and the longest wavelength incident light that will eject photo-..
An automobile tire is inflated with air originally at 10.0°C and normal atmospheric pressure. What is the tire pressure in pascals
A sample of an unknown substance appears to weigh 15.3 N in air and 9.16 N when immersed in a solvent with density 1.20 g/mL. Find the density and volume of the sample
A 101-kg horizontal platform is a uniform disk of radius 1.97 m and can rotate about the vertical axis through its center. A 67.9-kg person stands on the platform at a distance of 1.19 m from the center and a 27.3-kg dog sits on the platform near the..
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