By what factor must one change the weight suspended vertically from a spring coil in order to double its period of simple harmonic motion?
a. 4
c. 1/2
b. 2
d. 1/4
A
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Resolution: A camera with a 20-cm diameter lens is recording images using a filter that allows only light of wavelength 600 nm to pass through.(a) What is the limit on the angular resolution (in microradians) in this case?(b) What is the diameter of the minimum-sized features that could be resolved on Mars with this camera? The distance to Mars at the time is 9.0 × 107 km.
What will be an ideal response?
File size is a much greater issue with video than with audio.
Answer the following statement true (T) or false (F)
A stream of electrons passes through a velocity filter where the crossed magnetic and electric fields are 0.020 T and 5.00 × 104 V/m, respectively. Find the kinetic energy (in electron volts) of the electrons passing through the filter. [1 eV = 1.60 × 10?19 J]
What will be an ideal response?
What is the absolute pressure at a distance 5.00 m below the surface of a lake? Assume the density of the water in the lake is 1000 kg/m3
A) 5.00 × 103 N/m2 B) 1.50 × 105 N/m2 C) 0.49 × 105 N/m2 D) 1.05 × 105 N/m2 E) 4.66 × 105 N/m2