If the number of turns on the transformer input is greater than the number on the output, then the transformer
A. outputs greater voltage than at the input.
B. outputs less current than at the input.
C. outputs greater voltage and current than at the input.
D. outputs less voltage than at the input.
E. increases the voltage but does not affect the current.
D. outputs less voltage than at the input.
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The Schwarzschild radius of a 1 black hole is approximately
a. 3 km. b. 1,500,000 km, the size of the Sun c. 150,000,000 km or 1 AU. d. 3 x 1013 km or 1 pc.
The acceleration due to gravity is lower on the Moon than on Earth. Which one of the following statements is true about the mass and weight of an astronaut on the Moon's surface, compared to Earth?
A) Mass is less, weight is the same. B) Mass is the same, weight is less. C) Both mass and weight are less. D) Both mass and weight are the same.
Two satellites with equal rest masses are traveling toward each other in deep space. One is traveling at 0.550c and the other at 0.750c
The satellites collide and somehow manage to stick together. What is the speed of the combined object after the collision? A) 0.150c B) 0.113c C) 0.175c D) 0.100c E) 0.311c
Why is most matter electrically neutral?
a. It contains no charges. b. There are equal amounts of positive and negative charges present. c. The charge on the electrons and protons in the material is too small to notice. d. none of the above