Which of the following quantities are unknown? Select all that apply. Select all that apply. the charge of the alpha particle the value of the electric potential at the final position of the alpha particle the difference in potential between the initial and final positions of the alpha particle the mass of the alpha particle the value of the electric potential at the initial position of the alpha particle the final speed of the alpha particle the initial speed of the alpha particle

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

see earlier