The eagle momentum : 320 kg.m/s
<h3>Further explanation</h3>
Given
mass = 32 kg
d = 100 m
t = 10 s
Required
The momentum
Solution
The velocity of the eagle :
![\tt v=\dfrac{d}{t}\\\\v=\dfrac{100}{10}=10~m/s](https://tex.z-dn.net/?f=%5Ctt%20v%3D%5Cdfrac%7Bd%7D%7Bt%7D%5C%5C%5C%5Cv%3D%5Cdfrac%7B100%7D%7B10%7D%3D10~m%2Fs)
The momentum (P) :
![\tt P=m\times v\\\\P=32\times 10\\\\P=320~kg.m/s](https://tex.z-dn.net/?f=%5Ctt%20P%3Dm%5Ctimes%20v%5C%5C%5C%5CP%3D32%5Ctimes%2010%5C%5C%5C%5CP%3D320~kg.m%2Fs)
Heat required to decrease the temperature of body is given as
![Q = ms\Delta T](https://tex.z-dn.net/?f=Q%20%3D%20ms%5CDelta%20T)
here given that
![m = 100 kg](https://tex.z-dn.net/?f=%20m%20%3D%20100%20kg)
![s = 4 J/g ^0C = 4000 J/Kg ^0C](https://tex.z-dn.net/?f=s%20%3D%204%20J%2Fg%20%5E0C%20%3D%204000%20J%2FKg%20%5E0C)
![\Delta T = 0.55^0C](https://tex.z-dn.net/?f=%5CDelta%20T%20%3D%200.55%5E0C)
now by above equation
![Q = 100 \times 4000 \times 0.55](https://tex.z-dn.net/?f=Q%20%3D%20100%20%5Ctimes%204000%20%5Ctimes%200.55)
![Q = 220,000 J](https://tex.z-dn.net/?f=Q%20%3D%20220%2C000%20J)
now in order to evaporate water the heat is given as
![Q = mL](https://tex.z-dn.net/?f=Q%20%3D%20mL)
![220000 = m \times 2.25 \times 10^6](https://tex.z-dn.net/?f=220000%20%3D%20m%20%5Ctimes%202.25%20%5Ctimes%2010%5E6)
![m = 0.097 kg](https://tex.z-dn.net/?f=m%20%3D%200.097%20kg)
![m = 97 g](https://tex.z-dn.net/?f=m%20%3D%2097%20g)
so 97 g of water will evaporate from the body
I think that the answer to this is a. hope this helps
Answer:
a) 1.75s b) 17.2 m/s (down)
Explanation:
d1= 15m d2= 0m (because it hits ground)
a= -9.81 m/s^2 t=???
Equation
the triangle means change in so d2-d1
Δd= v1 * t + 1/2 * a * t^2
0m-15m= v1*t + 1/2 a t^2
-15 m= 0m/s*t (goes away) + 1/2* a *t^2
-15mx2= t^2
-15mx2/a= t^2
Square root (-30/-9.81m/s^2)
t=1.75 s
b) now v2!!
Im going to use v2= v1 + a*t
v2= 0m/s + -9.81 x 1.75s
v2 = -17.2 m/s or you can say 17.2 m/s down!!!
Answer:
The correct option is;
3. layers of cotton lining the interior
Explanation:
In the procedure for making a solar oven it is essential place the inside portion of the carboard flap be made that the air made hot by the heat of the Sun does is not removed from the oven as convection current, and to provide insulation that limits heat loss by thermal radiation as well as conduction to cooler surfaces.