Answer: 1000 Hz · 0,5 m = 500 m/s
Explanation: speed = frequency · wavelength
Answer:


Explanation:
Average power for the human sprinter is given as

so we have



Average power for greyhound is given as



Answer:
1.3 m/s
Explanation:
average speed = total distance/ total time
Answer:
The deformation is 0.088289 m
The final height of the monument is 170-0.088289 = 169.911702 m
Explanation:
Thermal coefficient of marble varies between (5.5 - 14.1) ×10⁻⁶/K = α
So, let us take the average value
(5.5+14.1)/2 = 9.8×10⁻⁶ /K
Change in temperature = 35-(-18) = 53 K = ΔT
Original length = 170 m = L
Linear thermal expansion

The deformation is 0.088289 m
The final height of the monument is 170-0.088289 = 169.911702 m (subtraction because of cooling)
If my math is right its A) 7
because 189 divided by 27 is 7