Two long parallel wires each carry a current of 5.0 A directed to the east. The two wires are separated by 8.0 cm. What is the magnitude of the magnetic field at a point that is 5.0 cm from each of the wires?
a. 72 ?T
b. 48 ?T
c. 24 ?T
d. 96 ?T
e. 32 ?T
c
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Which hypothesis suggested that the Moon formed elsewhere and was later caught by Earth's gravity?
a. fission hypothesis b. fusion hypothesis c. large-impact hypothesis d. capture hypothesis e. condensation hypothesis
Satellites in low-Earth orbits are more likely to crash to Earth when the sunspot cycle is near solar maximum because
A) it is too dangerous to send the Space Shuttle to service satellites during solar maximum. B) Earth's upper atmosphere tends to expand during solar maximum, exerting drag on satellites in low orbits. C) of increased magnetic interference. D) they are more likely to have their electronics "fried" by a solar flare during solar maximum.
What is an accretion disk?
What will be an ideal response?
Which of the following best defines the sampling rate?
A. The number of samples obtained per second during the recording process. B. The bit depth of an audio file. C. The amount of background noise in an audio file. D. The speed of playback of an audio file.