A charged particle is observed traveling in a circular path of radius R in a uniform magnetic field. If the particle were traveling twice as fast, the radius of the circular path would be
A) R/2. B) 8R. C) R/4. D) 4R. E) 2R.
E
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A thin ribbon of a silver alloy 2.00-cm wide and 0.0150-mm thick carries a current of 6.98 A perpendicular to a magnetic field. The Hall voltage is found to be 1.24 × 10^?4 V when the magnetic field is 2.50 T. Calculate n, the number of charge carriers per cubic meter
Interest in life on Mars has died since the latest surveys have found no signs of liquid water on its surface now
Indicate whether the statement is true or false
What type of stars does the bar contain?
A.) Old, cool stars that glow redder. B.) Young, cool stars that glow bluer. C.) Old, hot stars that glow bluer. D.) Old, cool stars that glow bluer. E.) The bar isn't made of stars, just gas.
Refracting Telescope: The objective lens of a telescope has a focal length of 1.90 m. When viewed through this telescope, the Moon appears 5.25 times larger than normal. How far apart are the objective lens and the eyepiece when this instrument is focused on the Moon?
Fill in the blank(s) with the appropriate word(s).