<span>
The taut guitar string haspotencial energy which we can see in action.</span> <span>· so option a is correct.</span>
Please be determined and being hardworking person do not rely on the other people to make your problems solved
Explanation:
Ok?
Answer:
a= 3.49 m/s^2
Explanation:
magnitude of total acceleration = sqrt{radial acceleration^2+tangential acceleration^2}.
we know that tangential acceleration a_t= change in velocity /time taken
now 90 km/h = 25 m/s
a_t = 25/17 = 1.47 m/s^2.
radial acceleration a_r = v^2/r
v= a_t×t = 1.47×13 = 19.11 m/s
a_r = 19.11^2/115= 3.175
now,


a= 3.49 m/s^2
Answer:
Thus, the payback time for cavity wall insulation is 7.5 years