(a) complex numbers, a +ib, with a and b real, may be represented by (or are iso- morphic with) 2 x 2 matrices: () a b -b a ib show that this matrix representation is valid for (i) addition and (ii) multiplication. (b) find the matrix corresponding to (a +ib)-

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

the speed of the cart after 3 seconds of low fan speed is ⇒ 54.0 cm/s.

the speed of the cart after 5 seconds of medium fan speed is ⇒ 120.0 cm/s.

the speed of the cart after 2 seconds of high fan speed is ⇒ 64.0 cm/s. 

just did the lab.

ingenuity says that the answer is 2.7 m.