The Moon is constantly falling toward Earth
Indicate whether the statement is true or false
TRUE
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The nuclear reactions in a star's core remain under control so long as
a. luminosity depends on mass. b. pressure depends on temperature. c. density depends on mass. d. weight depends on temperature. e. temperature depends on mass.
Specific Heat: A container of 114.0 g of water is heated using 67.0 W of power, with perfect efficiency. How long will it take to raise the temperature of the water from 15°C to 25°C? The specific heat capacity of the container is negligible, and the specific heat capacity of water is 4.186 × 103 J/kg ? C.
A. 71 s B. 4.1 s C. 17 s D. 320,000 s
The primary scientific purpose of a particle accelerator is to
A) make small particles achieve large accelerations. B) produce energy for commercial use. C) create particles and study their behavior. D) make small particles go very fast.
Which of the following molecules contains an ionic bond?
A) MgCl2 B) Cl2 C) SF3 D) PO4-3 E) none of the above