V=D/T - formula for speed
88 km/h = D / 0.75 hours - multiply speed and time
66 km= D
D is distance
D= 66 km
Hope this helps
Answer:
Elastic potential energy = 5.04 J
Explanation:
Given that
Extension e = 18 cm = 0.18 m
Force F = 56N
Elastic potential energy = 1/2Fe
Elastic Potential energy = 1/2 ×56×0.18
Elastic potential energy = 5.04 J
Answer:
0.7
Explanation:
Reasoning The distance between adjacent crests is the wavelength l. Since the speed of each wave is v = 3.00 × 108 m/s and the frequencies are known, the relation v = fl can be used to determine the wavelengths. The equation v = fl applies to any kind of periodic wave.
http://demo.webassign.net/ebooks/cj6demo/xlinks/c16-sec1-0002.htm
A, and D are two correct answers im not sure about the third sorry
Answer:
The approximate combined sound intensity is
Explanation:
The decibel scale intensity for busy traffic is 80 dB. so intensity will be
, therefore
In the same way for the loud conversation having a decibel intensity of 70 dB.
, therefore
Finally we add both of them , is the approximate combined sound intensity.