To solve this problem we will apply the momentum conservation theorem, that is, the initial momentum of the bodies must be the same final momentum of the bodies. The value that will be obtained will be a vector value of the final speed of which the magnitude will be found later. Our values are given as,

$m_1 = 1300kg$

$m_2 = 2400kg$

$u_1 = 12m/s i$

$u_2 = 18m/s j$

Using conservation of momentum,

$m_1u_1+m_2u_2 = (m_1+m_2)v_f$

$1300*12i-2400*18j = (1300+2400)v_f$

Solving for $v_f$

$v_f = 4.2162i-11.6756j$

Using the properties of vectors to find the magnitude we have,

$|v| = \sqrt{(4.2162^2)+(-11.6756)^2}$

$|v| = 12.4135m/s$

Therefore the magnitude of the velocity of the wreckage of the two cars immediately after the collision is 12.4135m/s

6 0

2 years ago

In an LRC circuit, why does the sum of the voltages around the circuit not equal the applied voltage as kirchhoff’s rule require

wel

Kirchhoff's loop rule is always true.

The foundation of circuit analysis is Kirchhoff's Laws for current and voltage. We have the fundamental set of tools required to begin evaluating circuits with these two principles, In an RLC circuit, the most fundamental elements of a resistor, inductor, and capacitor are connected across a voltage supply.

Learn more about Kirchhoff loop rule here-

brainly.com/question/15003023

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5 0

1 year ago

Read 2 more answers

Question 5 of 5

Volgvan

Answer:

I think is B.Their atomic numbers increase by 1 from left to right.

8 0

2 years ago