Work is a vector quantity
Indicate whether the statement is true or false
FALSE
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The type of radio galaxy that reveals its motion through the intergalactic medium is called a:
A) quasar. B) dual lobe. C) bi-polar jet. D) head-tail. E) Seyfert.
What is the relationship between wave frequency and period? What is the period, in seconds, that corresponds to each of the following frequencies: (a) 10 Hz, (b) 0.2 Hz, (c) 60 Hz?
What will be an ideal response?
A star can remain in the giant-star stage for about 90 percent of its total lifetime before it dies
Indicate whether the statement is true or false
A company that produces pulsed gas heaters claims their efficiency is approximately 90%. If an engine operates between 250°C and 25°C, what is its maximum thermodynamic efficiency?
A. 83% B. 65% C. 43% D. 90% E. 56%