The speed of sound in air is dependent upon the air temperature and other factors. The speed of sound increases from 334 m/s to 341 m/s between 8:00am and 11:00am. If a horn produces sound with wavelength 0.75 m at 8:00am, what would it produce at 11:00am?

A. 73 cm
B. 77 cm
C. Not enough info given to solve.
D. 75 cm


B. 77 cm

Physics & Space Science

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A(n) ____________________ is the expulsion of the outer layers of a moderate-mass star that has a degenerate carbon and oxygen core

Fill in the blank(s) with correct word

Physics & Space Science

Vision Problems: What power contact lens should be used to correct the vision of a farsighted person whose near point is 80 cm so she can see things clearly that are 25 cm in front of her?

A. +2.8 diopters B. -2.8 diopters C. -4.0 diopters D. -4.2 diopters E. +4.2 diopters

Physics & Space Science

Which of the following statements about novae is true?

A) A star system that undergoes a nova may have another nova sometime in the future. B) A nova involves fusion taking place on the surface of a neutron star. C) A nova is the most powerful type of explosion ever seen in the universe. D) When a star system undergoes a nova, it brightens as much as a star system undergoing a supernova. E) A nova can occur on a single, isolated star.

Physics & Space Science

The mass range for neutron stars is:

A) .08 to .4 solar masses. B) .4 to 3 solar masses. C) 1.4 to 3 solar masses. D) 3 to 8 solar masses. E) 6 to 11 solar masses.

Physics & Space Science