Answer: a) 31.07 * 10^6 N/C ; b) 11.68 * 10^6 N/C
Explanation: in order to solve this problem we have to use the Coulomb force which is given by:
F=k*q1*q2/r^2
( see attach for details)
Answer:
4 m/s
Explanation:
From the law of conservation of momentum,
Total momentum before collision = Total momentum after collision
mu+m'u' = V(m+m')...................... Equation 1
Where m = mass of the arrow, u = initial velocity of the arrow, m' = mass of the apple, u' = initial velocity of the apple, V = Final velocity of the apple and the arrow after collision.
make V the subject of the equation
V = (mu+m'u')/(m+m').................... Equation 2
Given: m = 0.5 kg, m' = 2 kg, u = 20 m/s, u' = 0 m/s(initially at rest)
Substitute into equation 2
V = (0.5×20+2×0)/(2+0.5)
V = 10/2.5
V = 4 m/s.
Hence the final velocity of the apple and the arrow after the collision = 4 m/s
Explanation:
If you want to get speed, u have to divided distance over time
The lowest speed will lose
OMG ITS B ITS B I HOPE I HELPED U
