1) Four point charges lie along the x axis in our problem. They are: +1 μC at x = -0.3 m -1 μC at x = -0.1 m -1 μC at x = +0.1 m +1 µC at x = +0.3 m a) What is the value of the x-component of the electric field at points along the y-axis? b) What is the electric potential along the y-axis? (taking, as usual, the zero for potential at infinity.) c) Write the expression the work done in bringing this array together. You don't need to simplify the sum after writing it out, but you need to write out each term with relevant values and constants. (HINT: Note that there are six terms in the sum you need to do.) d) How does the potential approach zero in the limit as y goes to infinity? (That is, what functional form.) Justify why this is different than the form for a point charge, or even the "dipole" example done in class.

Convert the total number of gallons of gas  2.90 per gallon (round trip 452 miles) to liters of gas.

Please give me answer of this question in 10 minutes. Please give answer of both questions.

Could you help with these 3 questions?

Avondale Aeronautics has perpetual preferred stock outstanding with a par value of $100. The stock pays a quarterly dividend of $2.00 and its current price is $ 112 What is its nominal annual rate of return? Do not round intermediate calculationsRound your answer to two decimal places b. What is its effective annual rate of return? Do not round intermediate calculations. Round your answer to two decimal places

Problem 2. 1-3

Please help me find out the percentage difference. Given the information provided. Thank you.

the mass of magnesium chloride produced when 1,5 g of magnesium reacts completely with dilute hydrochloric acid. b. the volume of hydrogen gas produced, at STP, when 17,75 g of hydrochloric acid reacts completely with magnesium. (5) (5) [17) Question 5 5. A toy missile (mass 500 g) is launched with a speed of 12 m-s from a platform (at position A) which is 3 m above the ground. It reaches a maximum height at position B, then falls back down to the ground passing position A and landing at position D. [The diagram is not drawn to scale.] Ignore the effects of air resistance. 5.1 Define kinetic energy. (2) 5.2 Calculate the initial kinetic energy of the missile. (4) 5.3 Define mechanical energy. 5.4 Calculate the initial mechanical energy of the missile. 5.5 State the law of conservation of mechanical energy. 5.6 Calculate the maximum height reached by the missile above the ground. 5.7 Determine the speed of the missile just before it hits the ground at position D.