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A spectral line of sodium normally has a wavelength of 5890Angstroms. The same line measured in the spectrum of a star is at awavelength of 5625 Angstroms. At what speed in the star traveling? Is the star moving towards us or away from us?
The radius of a black hole is the distance from the black hole's center at which the escape speed is the speed of light. What is the radius of a black hole with the same mass as that of the Earth
A 0.5530-kg ice cube at -12.40°C is placed inside a chamber of steam at 365.0°C. calculate the final temperature of the puddle
A skier approaches the base of an icy, frictionless hill with a speed of 10.7 . The hill slopes upward at 19.0 above the horizontal. Find the acceleration of this skier
For a particle of mass m and charge q moving in a circular path in a magnetic field B, Find angular momentum of a particle about the center of the circle
The dial on an AM radio contains numbers ranging from about 530 to about 1600. What is the corresponding range of wavelengths
A(n) 1340 kg car moving with a speed of 16.6 m/s collides with a utility pole and is brought to rest in 0.299 s
A solid disk of mass m1 = 9.6 kg and radius R = 0.24 m is rotating with a constant angular velocity of ? = 30 rad/s. find the final rotational energy of the rod and disk system
A recantangular block of wood floats in a calm lake. Show, if friction is ignored, determine an equation for the force constant
The drawing shows an equilateral triangle, each side of which has a length of 2.23 cm. Point charges are fixed to each corner, Determine the charge qA and qB
A long, thin rod (length = 5.0 m) lies along the x axis, with its midpoint at the origin. In a vacuum, a +6.0C point charge is fixed to one end of the rod, and a -6.0C point charge is fixed to the other end. find the magnitude of the net torque app..
A satellite is in a circular orbit around the Earth at an altitude of 1.68 106 m. Find the acceleration of the satellite
A proton moves at 7.50 X 10 ^7 m/s, perpendicular to a magnetic field. The field causes the proton to travel in a circular path of radius 0.800m.
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