A sound wave traveling through a solid material has a frequency of 400 hertz. the wavelength of the sound wave is 2 meters. what is the speed of sound in the material? a. 200 m/s
b. 200 Hz
c. 800 m/s
d. 800 Hz​​

What are the theoretical properties of a gas at a temperature of 0 kelvin?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above