<h2>
Velocity of 0.2 kg ball is 0.17 m/s</h2>
Explanation:
Let the mass of balls be m and M.
Initial velocity ball 1 be u₁, ball 2 be u₂
Final velocity ball 1 be v₁, ball 2 be v₂
Initial momentum = m x u₁ + M x u₂ = 0.2 x 0.3 + 0.1 x 0.1 = 0.07 kgm/s
Final momentum = m x v₁ + M x v₂ = 0.2 x v₁ + 0.1 x 0.36 = 0.2v₁ + 0.036
We have momentum conservation
Initial momentum = Final momentum
0.07 = 0.2v₁ + 0.036
v₁ = 0.17 m/s
Velocity of 0.2 kg ball is 0.17 m/s
Answer:
v=30 m/s
Explanation:
h - height
g - acceleration due to gravity=10
t - time
v- velocity
45 = 5t²
t² = 9
t=3 seconds
v=g×t
v=10×3
v=30 m/s
When the silk is rubbed against the amber, the silk loses electrons to the amber making the silk positve charge and the amber have a negiitve charge.
when u put both positive charged pieces of silk near each other they will repel each other becasue they have the same charge
law of repulsion states that like charges repel
i have a test on this stuff tmrw good luck! xx
Answer:
a.
b.
Explanation:
The frequency of a harmonic oscillator is given by the following formula:
----------------- equation (1)
a.
In order to double the frequency of this oscillator:
ω' = 2ω
m' = ?
Therefore,
using equation (1):
a.
In order to triple the frequency of this oscillator:
ω' = 3ω
m' = ?
Therefore,
using equation (1):