Answer:
Option B
Explanation:
The butter forms a new arrangement of atoms i.e from solid to liquid
Answer: 6.24 km
Explanation:
Given
The magnitude of the first vector(say) ![\left | a\right |=5\ km](https://tex.z-dn.net/?f=%5Cleft%20%7C%20%20a%5Cright%20%7C%3D5%5C%20km)
the magnitude of the second vector(say) ![\left | b\right |=7\ km](https://tex.z-dn.net/?f=%5Cleft%20%7C%20%20b%5Cright%20%7C%3D7%5C%20km)
the angle between them is ![120^{\circ}](https://tex.z-dn.net/?f=120%5E%7B%5Ccirc%7D)
The resultant vector magnitude is given by
![\left | \vec{R}\right |=\sqrt{a^2+b^2+2ab\cos \theta}](https://tex.z-dn.net/?f=%5Cleft%20%7C%20%20%5Cvec%7BR%7D%5Cright%20%7C%3D%5Csqrt%7Ba%5E2%2Bb%5E2%2B2ab%5Ccos%20%5Ctheta%7D)
![\left | \vec{R}\right |=\sqrt{5^2+7^2+2\times 5\times 7\cdot \cos 120^{\circ}}\\\left | \vec{R}\right |=\sqrt{74-35}=\sqrt{39}\\\left | \vec{R}\right |=6.24\ km](https://tex.z-dn.net/?f=%5Cleft%20%7C%20%20%5Cvec%7BR%7D%5Cright%20%7C%3D%5Csqrt%7B5%5E2%2B7%5E2%2B2%5Ctimes%205%5Ctimes%207%5Ccdot%20%5Ccos%20120%5E%7B%5Ccirc%7D%7D%5C%5C%5Cleft%20%7C%20%20%5Cvec%7BR%7D%5Cright%20%7C%3D%5Csqrt%7B74-35%7D%3D%5Csqrt%7B39%7D%5C%5C%5Cleft%20%7C%20%20%5Cvec%7BR%7D%5Cright%20%7C%3D6.24%5C%20km)
Answer:
-1.03 m/s²
Explanation:
Acceleration: This can be defined as the rate of change of velocity. The S. I unit of acceleration is m/s².
Mathematically, acceleration is expressed as
a = (v-u)/t ........................ Equation 1
Where a = acceleration, v = final velocity, u = initial velocity, t = time.
Given: u = 13.60 m/s, v = 7.20 m/s t = 6.2 s.
Substituting into equation 2
a = (7.20-13.60)/6.2
a = -6.4/6.2
a = -1.03 m/s²
Note: a is negative because, the hockey puck is decelerating.
Hence the average acceleration = -1.03 m/s²
V=IR can be changed to V/R=I so 10V/2 ohms = 5amps so 5 amps is your answer boss
The answer to this statement is true!