Answer: 1000 Hz · 0,5 m = 500 m/s
Explanation: speed = frequency · wavelength
Answer:
(C) apparently written incorrectly - it should be 29.9 +- .3 K
(read 29.9 plus or minus .3 K)
1 watt = 1 joule per second = 1 newton meter per second = 1 kg m2 s-3
Answer:
Law of multiple proportions
