Which of the following would have the same resistance as a copper wire that
is 4 m long and has a cross-sectional area of 0.066 cm? ?
o
a. a copper wire that is 8 m long and cross-sectional area of 0.132
cm2
o
b. a copper wire that is 2 m long and cross-sectional area of 0.132
cm2
o
c. a copper wire that is 1 m long and cross-sectional area of 0.022
cm?
o
d. a copper wire that is 6 m long and cross-sectional area of 0.022
cm2

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.

part 1: which substance has a higher solubility?

a

smallest amount left undissolved atall temps in table shown most has dissolved high sol'by