Answer:
118.8 N
Explanation:
Weight of the light, W = 214.8 N
Angle between two wires, 2θ = 129.4°
Let t be the tension in each wire. Now the vertical components of tension is balanced by the weight of the light.
2 T Sinθ = W
2 x T x Sin 64.7° = 214.8
1.808 T = 214.8
T = 118.8 N
Thus, the tension in each wire is 118.8 N.
You'd have an easier time using the equation if you understood where the equation comes from.
The law here ... the major principle to remember, the key, the fundamental truth, the big cookie ... is the fact that momentum is conserved. <em>The total momentum after they join up is the same as the total momentum before they meet.</em>
Momentum of an object is (mass) times (speed).
Now, list all the things you know, before and after the putty meets the ball:
<u>Before:</u><u> </u>There are two objects.
Mass of putty = 3 kg
Speed of putty = 5m/s
Momentum of putty = 3 x 5 = 15 kg-m/s.
Mass of ball = 5 kg
Speed of ball = zero
Momentum of ball = 5 x 0 = zero
Total momentum of both things = 15 kg-m/s
<u>After</u>: There is only one object, because they stuck together.
Mass of (putty+ball) = (3+5) = 8 kg
Speed of (putty+ball) = we don't know; that's what we have to find
Momentum of (putty+ball) = 8 x (speed)
===================================
We know that the momentum after is equal to the momentum before.
8 x (speed) = 15 kg-m/s
Divide each side by 8 :
Speed = 15 / 8 = <em>1.875 m/s </em> after they stick together.
Explanation:
(a) The Schrodinger's wave function represent the position of a particle at a particular instant of time. It is also known as the probability amplitude. It is also used to find the location of a particle.
(b) The width of a potential well,
For first energy level, n = 1
Energy in infinite potential well is given by :
E = 0.0120 Joules
For second energy level, n = 2
E = 0.0483 Joules
For third energy level, n = 3
E = 0.108 Joules
Hence, this is the required solution.