The latest evidence from 2MASS suggests our own Milky Way is type SBb
Indicate whether the statement is true or false
TRUE
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Sound: The speed of sound through the ground is about 6.0 km/s while the speed of sound in air is 343 m/s. A very powerful explosion occurs some distance away and you feel the ground vibrate 60 seconds before you hear the sound of the explosion. How far away is the explosion?
A. 20 km B. 22 km C. 25 km D. 27 km E. 30 km
The nadir marks the point of the celestial sphere directly above your head
a. True b. False Indicate whether the statement is true or false
In which is the current changing more rapidly?
A. Inductor 1 B. Inductor 2 C. The current or change in current is the same in both. D. One needs more information to answer the question.
A straight 10-cm wire bent at its midpoint so as to form an angle of 90° carries a current of 10 A. It lies in the xy plane in a region where the magnetic field is in the positive z direction and has a constant magnitude of 3.0 mT. What is the magnitude of the magnetic force on this wire?
a. 3.2 mN b. 2.1 mN c. 5.3 mN d. 4.2 mN e. 6.0 mN