Van Allen belts are regions encircling Earth where charged particles get trapped by the magnetosphere
Indicate whether the statement is true or false
TRUE
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An ambulance is generating a siren sound at a frequency of 2,400 Hz. The velocity of sound is 345.0 m/s. The observer is traveling at a velocity of 24.00 m/s toward the ambulance and the ambulance is traveling at a velocity of 24.00 m/s away the observer. What is the frequency of the siren perceived by the observer?
A. 2,448 Hz B. 2,424 Hz C. 2,400 Hz D. 2,376 Hz E. 2,352 Hz
A conducting loop of wire has an area of 150 cm2 and a resistance of 25.0 ?. There is a magnetic field of 100 T perpendicular to the loop. At what rate must this field be reduced to induce a current of 0.100 A in the loop?
A) 167 T/s B) 60.0 T/s C) 5.58 T/s D) 0.354 T/s E) 120 T/s
Metric system: How many nanoseconds does it take for a computer to perform one calculation if it performs 6.7 × 107 calculations per second?
A. 15 ns B. 67 ns C. 11 ns D. 65 ns
An ______style only affects the content within the tags in which it appears.
A. inline B. internal C. interface D. intermittent