Answer:
5.94 N·s
Explanation:
F = 132 N
t = 0.045 s
Impulse = Ft = (132 N)(0.045 s) = 5.94 N·s
Answer:
It is directed inward, toward the center of a circle.
The amount of heat needed to increase the temperature of a 1-kilogram substance by 1°C is known as the specific heat of the substance.
the formula for specific heat of a substance is given as
c = Q/(m ΔT)
where Q = Heat required to change the temperature by 1°C
m = mass of the substance
ΔT = change in temperature.
the units of specific heat is given as Joules/(kilogram °C)
Answer:
QESARDFRGTSRTATFREVERSRvrvqwqv
Explanation:
vfqfvcafbraf w rfdsd AEWvd a
Answer:
3.31m/s
Explanation:
Angular momentum for 3s is
![L = L_i_n_i + L_3_s](https://tex.z-dn.net/?f=L%20%3D%20L_i_n_i%20%2B%20L_3_s)
![L = 2(11.5kg) + \int\limits^ {3s}_ {0s} {(t^2 + 2)} \, dt](https://tex.z-dn.net/?f=L%20%3D%202%2811.5kg%29%20%2B%20%5Cint%5Climits%5E%20%7B3s%7D_%20%7B0s%7D%20%7B%28t%5E2%20%2B%202%29%7D%20%5C%2C%20dt)
![L = 23kg+(\frac{t^3}{3} +2t)^ {3s}_ {0s}\\\\L=38kgm/s](https://tex.z-dn.net/?f=L%20%3D%2023kg%2B%28%5Cfrac%7Bt%5E3%7D%7B3%7D%20%2B2t%29%5E%20%7B3s%7D_%20%7B0s%7D%5C%5C%5C%5CL%3D38kgm%2Fs)
Moment if inertia is
![I = 2ml^2](https://tex.z-dn.net/?f=I%20%3D%202ml%5E2)
![I = 2(11.5)(0.5)^2\\\\I=5.75kgm^2](https://tex.z-dn.net/?f=I%20%3D%202%2811.5%29%280.5%29%5E2%5C%5C%5C%5CI%3D5.75kgm%5E2)
Angular speed
ω = L/I
![= 38 / 5.75\\\\=6.61](https://tex.z-dn.net/?f=%3D%2038%20%2F%205.75%5C%5C%5C%5C%3D6.61)
The speed of each ball is
V = ωL
![= 6.61\times0.5\\\\= 3.31m/s](https://tex.z-dn.net/?f=%3D%206.61%5Ctimes0.5%5C%5C%5C%5C%3D%203.31m%2Fs)