You hear a sound in the distance. suddenly the sound gets deeper, decreasing in pitch. which can you assume about the sound waves reaching your ears?
a. the wavelengths of the new sound waves are longer.
b. the amplitude of the new sound waves has increased.
c. the sound waves have changed their speed so that they are now moving more quickly through the air.

Aforce of 34.5 newtons is applied to an object at an angle of 45 º with the horizontal. what is the force acting on the object in the horizontal direction?

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination. at the turning point, how far is the second student from the destination?