Planet-sized bodies have been detected around pulsars
Indicate whether the statement is true or false
TRUE
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Center of Mass: Consider the sun and its largest planet Jupiter. On the line joining them, how far from the center of the sun is their center mass? Is it within or outside the sun? (Jupiter-sun distance is 778 × 106 km, diameter of the sun is 1.4 × 106 km, the sun is 1000 times as massive as Jupiter)
What will be an ideal response?
Which one of the following statements is not a characteristic of a voltmeter?
a) The voltmeter measures the voltage between two points in a circuit. b) The voltmeter is designed to measure nearly the same voltage that is present when the meter is not connected. c) The voltmeter is not placed directly into a circuit. d) The voltmeter is designed to draw very little current from the circuit being measured. e) An ideal voltmeter has almost no resistance.
Ozone is an unnatural form of oxygen
What will be an ideal response?
Sending signals at optical wavelengths might be a viable alternative to radio wavelengths
A) only between civilizations around solar-type stars whose eyes have evolved to see such radiation B) over relatively short distances where absorption by interstellar matter would not be a problem C) as long as the light transmitted is a different color than the light given off by the parent star D) over all distances as long as the intensity of the signal is strong enough