True - Because a sound wave carries energy; to propagate energy, energy must be applied for the sound wave to carry energy.
Answer:
ΔL = 5.09x10^-5 m
Explanation:
data provided by the exercise:
m = 56 kg
L = 35 cm = 0.35 m
r = 1.5 cm = 0.015 m
Y = 1.6x10^10 N/m^2
F = 3 m*g
A = pi*r^2
The Young´s modulus is equal to:
Y = (F/A)/(ΔL/L) = (F*L)/(A*ΔL)
Clearing ΔL, we have:
ΔL = (F*L)/(A*Y) = (3*56*9.8*0.35)/(pi*(0.015^2)*1.6x10^10) = 5.09x10^-5 m
3 minutes = 180 seconds.
If it spent the entire 180 seconds slowing down at the rate of 3.5 m/s every second, then it began the 3 minutes at the speed of (180 x 3.5)=630 m/s. That's about 1,409 mph !
Use kelvin not celsius
C + 273 = K
This will fix my problem of the equation not making sense.
Answer:
Yes it is. So
B. True
Explanation:
Earth's surface is constantly changing. Wind, water, and ice break down large rocks and move sediments on the surface. It usually takes years for weathering, erosion, and deposition to cause noticeable changes. Some events, though, change Earth's surface much more quickly.
