The complete magnetic cycle is 11 years long, whereas the sunspot cycle is 22 years long
Indicate whether the statement is true or false
False
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A two-shell-eight-tube-pass heat exchanger is used as an economizer by heating a 1000 l/min 10ºC stream of water with another 1000 l/min stream of 75ºC water. If the NTU value for the economizer is 0.45, what are the outlet temperatures of the two streams of water?
What will be an ideal response?
Almost half of all known millisecond pulsars are found in what type of object?
A) giant molecular clouds B) open clusters C) globular clusters D) emission nebulae E) supernova remnants
A charged particle (mass = 4.0 mg, charge = 5.0 mC) moves in a region where the only force on it is magnetic. What is the magnitude of the acceleration of the particle at a point where the speed of the particle is 5.0 km/s, the magnitude of the magnetic field is 8.0 mT, and the angle between the direction of the magnetic field and the velocity of the particle is 60°?
a. 39 km/s2 b. 43 km/s2 c. 48 km/s2 d. 52 km/s2 e. 25 km/s2
A rock has a density of 2 g/cm3. If another rock has twice as much mass but the same volume, its density must be ________ g/cm3.
A. 0.5 B. 2 C. 8 D. 4