What two body systems are critical for the life support chain?

As shown in the figure, an electron with charge -e is traveling in the negative x direction. A uniform electric field is applied in the positive y direction. The total force on the electron can be made zero by applying a magnetic field:Capture16.PNG 

What is the resistance of a wire made of a material with a resistivity of 3.2×10-8 Ω.m if its length this 2.5 m and its radiusis 0.50 mm?

The figure shows three long, parallel current-carrying wires. The magnitudes of the currents are equal and their directions are indicated in the figure. Which of the arrows drawn near the wire carrying current 1 correctly indicates the direction of the magnetic force acting on that wire?Capture10.PNG 

The plates of a parallel-plate capacitor of capacitance are horizontal. Into the gap a slab of dielectric material with κ = 2 placed, filling the bottom half of the gap between the plates. What is the resulting new capacitance?Capture8(1).PNG    

A cubical gaussian surface surrounds a long, straight, charged filament that passes perpendicularly through two opposite faces. No other charges are nearby. Through how many of the cube’s faces is the electric flux is not zero?

In a certain region of space, a uniform electric field is in the negative x direction. A particle with negative charge is carried from x = 60.0 cm to x = 20.0 cm. Does the electric potential energy of the charge–field increase, remain constant, decrease, or change unpredictably? 

Three point charges lie at the vertices’s of an equilateral triangle as shown. All three charges have the same magnitude, but charge q1 and q3 are positive and charges q2is negative. The net electric force that charges q1 and q3 exert on charge q2 is in: Screen Shot 2020-09-28 at 7.17.21 PM(1)(1).png

A charged parallel plate capacitor is disconnected from a battery. If the plates are pulled away from each other, increasing their separation, what happens to the potential difference between the plates?

Three resistors and two V1 = 14 V and V2 = 10 V batteries are arranged as shown in the circuit diagram. Which one of the following current in the circuit is correct?Capture2(1)(1).PNG