Answer:
0.084 kg
Explanation:
I = 0.80 N-s (East wards) = 0.80 i N-s
u = 3.8 m/s = - 3.8 i m/s
v = 5.7 m/s = 5.7 i m/s
Let m be the mass of bat.
I = m (v - u)
0.8 i = m ( 5.7 i + 3.8 i)
0.8 i = m x 9.5 i
m = 0.084 kg
A = horizontal displacement of the humming bird = 1.2 m
B = vertical displacement of the humming bird = 1.4 m
C = net displacement of the humming bird from initial to final position = ?
In the triangle drawn , Using Pythagorean theorem
C = √(A² + B²)
inserting the values
C = √(1.2² + 1.4²)
C = √(1.44 + 1.96)
C = √(3.4)
C = 1.4 m
Hence the net displacement of hummingbird comes out to be 1.4 m
Adiabatic process is that process in which heat of a closed system will remain conserved or we can say that system can not exchange its thermal energy from its surrounding
So here from 1st law of thermodynamics we can say
![\Delta Q = \Delta U + W](https://tex.z-dn.net/?f=%5CDelta%20Q%20%3D%20%5CDelta%20U%20%2B%20W)
since we know that
![\Delta Q = 0](https://tex.z-dn.net/?f=%5CDelta%20Q%20%3D%200)
so we will have
![0 = \Delta U + W](https://tex.z-dn.net/?f=0%20%3D%20%5CDelta%20U%20%2B%20W)
so we have
![-\Delta U = W](https://tex.z-dn.net/?f=-%5CDelta%20U%20%3D%20W)
so here correct answers are
<em>A. -ΔU = W </em>
<em>B. Heat is constant. </em>
Answer:
first 2 yes 3rd one no 4th one yes last one no
Explanation:
Answer:
The total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.